Abstract
Coronal astronomy is by now a fairly mature discipline, with a quarter century having gone by since the detection of the first stellar X-ray coronal source (Capella), and having benefitted from a series of major orbiting observing facilities. Serveral observational characteristics of coronal X-ray and EUV emission have been solidly established through extensive observations, and are by now common, almost text-book, knowledge. At the same time the implications of coronal astronomy for broader astrophysical questions (e.g.Galactic structure, stellar formation, stellar structure, etc.) have become appreciated. The interpretation of stellar coronal properties is however still often open to debate, and will need qualitatively new observational data to book further progress. In the present review we try to recapitulate our view on the status of the field at the beginning of a new era, in which the high sensitivity and the high spectral resolution provided by Chandra and SMM-Newton will address new questions which were not accessible before.
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References
Alcalá, J. M., J. Krautter, E. Covino, R. Neuhäuser, J. H. M. M. Schmitt, and R. Wichmann: 1997, 'A study of the Chamaleon star forming region from the ROSAT all-sky survey. II. The pre-main sequence population'. A&A 319, 184.
Allende Prieto, C., D. L. Lambert, and M. Asplund: 2001, 'The forbidden abundance of oxygen in the Sun'. ApJ 556, L63.
Ambruster, C. W., S. Sciortino, and L. Golub: 1987, 'Rapid, low-level X-ray variability in active late-type dwarfs'. ApJS 65, 273.
Anders, E. and N. Grevesse: 1989, 'Abundances of the elements — Meteoritic and solar'. Geochimica and Cosmochimica Acta 53, 157.
Antonucci, E. and R. Martin: 1995, 'Differential emission measure and iron-to-calcium abundance in solar flare plasmas'. ApJ 451, 402.
Aschwanden, M. J.: 2001, 'An evaluation of coronal heating models for active regions based on Yohkoh, SOHO, and TRACE observations'. ApJ 560, 1035.
Aschwanden, M. J., R. W. Nightingale, and D. Alexander: 2000, 'Evidence for nonuniform heating of coronal loops inferred from multithread modeling of TRACE Data'. ApJ 541, 1059.
Audard, M., M. Güdel, and E. F. Guinan: 1999, 'Implications from extreme-ultraviolet observations for coronal heating of active stars'. ApJ 513, L53.
Audard, M., E. Behar, M. Güdel, A. J. J. Raassen, D. Porquet, R. Mewe, C. R. Foley, and G. E. Bromage: 2001, 'The XMM-Newton view of stellar coronae: High-resolution X-ray spectroscopy of Capella'. A&A 365, L329.
Audard, M., M. Güdel, and R. Mewe: 2001, 'The XMM-Newton view of stellar coronae: flare heating in the coronae of HR 1099'. A&A 365, L318.
Audard, M., M. Güdel, A. Sres, R. Mewe, A. J. J. Raassen, E. Behar, C. R. Foley, and R. J. L. van der Meer: 2002, 'A study of the coronal plasma in RS CVn binary systems: HR 1099 and co.'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 65, ASP, San Francisco.
Ayres, T. R., A. Brown, R. A. Osten, D. P. Huenemoerder, J. J. Drake, N. S. Brickhouse, and J. L. Linsky: 2001, 'Chandra, EUVE, HST, and VLA multiwavelength campaign on HR 1099: instrumental capabilities, data reduction, and initial results'. ApJ 549, 554.
Bahcall, J. N. and R. M. Soneira: 1980, 'The universe at faint magnitudes. I — Models for the galaxy and the predicted star counts'. ApJS 44, 73.
Baliunas, S. L., R. A. Donahue, W. H. Soon, J. H. Horne, J. Frazer, and et al.: 1995, 'Chromospheric variations in main-sequence stars. II'. ApJ 438, 269.
Barbera, M., G. Micela, S. Sciortino, F. R. Harnden, and R. Rosner: 1993, 'X-ray emission at the low mass end: results from an extensive Einstein observatory survey'. ApJ 414, 846.
Barbera, M., G. Micela, A. Collura, S. S. Murray, and M. V. Zombeck: 2000, 'In-flight calibration of the ROSAT HRI ultraviolet sensitivity'. ApJ 545, 449.
Barbera, M., F. Bocchino, F. Damiani, G. Micela, S. Sciortino, F. Favata, and F. R. Harnden: 2002, 'ROSAT PSPC/HRI observations of the open cluster NGC 2422'. A&A 387, 463.
Barrado y Navascués, D., J. R. Stauffer, and S. Randich: 1998, 'Stellar activity in coeval open clusters: Praesepe and the Hyades'. ApJ 506, 347.
Belloni, T. and F. Verbunt: 1996, 'Soft X-rays from the intermediate-age open cluster NGC 752'. A&A 305, 806.
Berdyugina, S. V., S. Jankov, I. Ilyin, I. Tuominen, and F. C. Fekel: 1998, 'The active RS Canum Venaticorum binary II Pegasi. I. Stellar and orbital parameters'. A&A 334, 863.
Bookbinder, J. A.: 1985, 'Observations of non-thermal radiation from late-type stars'. Ph.D. thesis, Harvard University.
Bouvier, J.: 1990, 'Rotation in T Tauri stars. II — Clues for magnetic activity'. AJ 99, 946.
Bouvier, J., M. Forestini, and S. Allain: 1997, 'The angular momentum evolution of low-mass stars'. A&A 326, 1023.
Bowyer, S., J. J. Drake, and S. Vennes: 2000, 'Extreme ultraviolet astronomy'. ARA&A 38, 231.
Brandenburg, A., D. Moss, and I. Tuominen: 1992, 'Turbulent pumping in the solar dynamo'. In: K. L. Harvey (ed.): The solar cycle, Vol. 27 of ASP Conference Series. p. 536, ASP, San Francisco.
Brickhouse, N. S., J. C. Raymond, and B. W. Smith: 1995, 'New model of iron spectra in the extreme ultraviolet and application to SERTS and EUVE observations: a solar active region and Capella'. ApJS 97, 551.
Brickhouse, N. S. and A. K. Dupree: 1998, 'EUVE observations of the W UMa contact binary 44i Boo: coronal structure and variability'. ApJ 502, 918.
Brickhouse, N. S., A. K. Dupree, R. J. Edgar, D. A. Liedahl, S. A. Drake, N. E. White, and K. P. Singh: 2000, 'Coronal structure and abundances of Capella from simultaneous EUVE and ASCA spectroscopy'. ApJ 530, 387.
Brickhouse, N. S., A. K. Dupree, and P. R. Young: 2001, 'X-Ray Doppler Imaging of 44i Bootis with Chandra'. ApJ 562, L75.
Briggs, K. R., J. P. Pye, R. D. Jeffries, and E. J. Totten: 2000, 'X-ray source populations in the region of the open clusters NGC 6633 and IC 4756'. MNRAS 319, 826.
Brinkman, A. C., E. Behar, M. Güdel, M. Audard, A. J. F. den Boggende, G. Branduardi-Raymont, J. Cottam, C. Erd, J. W. den Herder, F. Jansen, J. S. Kaastra, S. M. Kahn, R. Mewe, F. B. S. Paerels, J. R. Peterson, A. P. Rasmussen, I. Sakelliou, and C. de Vries: 2001, 'First light measurements with the XMM-Newton reflection grating spectrometers: evidence for an inverse first ionization potential effect and anomalous Ne abundance in the coronae of HR 1099'. A&A 365, L324.
Caillault, J. P. and D. J. Helfand: 1985, 'The Einstein soft X-ray survey of the Pleiades'. ApJ 289, 279.
Canizares, C. R., D. P. Huenemoerder, D. S. Davis, D. Dewey, K. A. Flanagan, J. Houck, T. H. Markert, H. L. Marshall, M. L. Schattenburg, N. S. Schulz, M. Wise, J. J. Drake, and N. S. Brickhouse: 2000, 'High-resolution X-ray spectra of Capella: initial results from the Chandra high-energy transmission grating spectrometer'. ApJ 539, L41.
Casanova, S., T. Montmerle, E. D. Feigelson, and P. Andre: 1995, 'ROSAT X-ray sources embedded in the ρ Ophiuchi cloud core'. ApJ 439, 752.
Cassinelli, J. P., N. A. Miller, W. L. Waldron, J. J. MacFarlane, and D. H. Cohen: 2001, 'Chandra detection of Doppler-shifted X-ray line profiles from the wind of ζ Puppis (O4 F)'. ApJ 554, L55.
Catura, R. C., L. W. Acton, and H. M. Johnson: 1975, 'Evidence for X-ray emission from Capella'. ApJ 196, L47.
Charbonneau, P. and K. B. MacGregor: 1992, 'Angular momentum transport in magnetized stellar radiative zones. I — Numerical solutions to the core spin-up model problem'. ApJ 387, 639.
Choi, C. S. and T. Dotani: 1998, 'ASCA observation of a long-duration X-ray flare from the W UMa-type binary VW Cephei'. ApJ 492, 761.
Christensen-Dalsgaard, J.: 2002, 'Helioseismology'. Rev. Mod. Phys. 74, 1073.
Ciaravella, A., G. Peres, A. Maggio, and S. Serio: 1996, 'Loop modeling of coronal X-ray spectra. I. General properties'. A&A 306, 553.
Copeland, H., J. O. Jensen, and H. E. Jorgensen: 1970, 'Homogeneous models for Population I and Population II compositions'. A&A 5, 12.
Covino, S., M. R. Panzera, G. Tagliaferri, and R. Pallavicini: 2001, 'Quiescent and flare analysis for the chromospherically active star Gl 355 (LQ Hya)'. A&A 371, 973.
Cox, A. N., G. Shaviv, and S. W. Hodson: 1981, 'On the ratio of mixing length to scale height in red dwarfs'. ApJ 245, L37.
Craig, I. J. D., A. N. McClymont, and J. H. Underwood: 1978, 'The temperature and density structure of active region coronal loops'. A&A 70, 1.
Crosby, N. B., M. J. Aschwanden, and B. R. Dennis: 1993, 'Frequency distributions and correlations of solar X-ray flare parameters'. Solar Physics 143, 275.
Cully, S. L., O. H. W. Siegmund, P. W. Vedder, and J. V. Vallerga: 1993, 'Extreme Ultraviolet Explorer deep survey observations of a large flare on AU Microscopii'. ApJ 414, L49.
Cully, S. L., G. H. Fisher, S. L. Hawley, and T. Simon: 1997, 'Extreme Ultraviolet Explorer spectra of the 1993 March flares on AD Leonis: the differential emission measure and implications for coronal structure'. ApJ 491, 910.
Dachs, J. and W. Hummel: 1996, 'ROSAT survey of stellar X-ray sources in the young open cluster NGC 2516'. A&A 312, 818.
Dahn, C. C., J. Liebert, and R. S. Harrington: 1986, 'LHS 292 and the luminosity function of the nearby M dwarfs'. AJ 91, 621.
Damiani, F., G. Micela, S. Sciortino, and F. R. Harnden: 1994, 'Einstein X-ray observations of Herbig Ae/Be stars'. ApJ 436, 807.
D'Antona, F. and I. Mazzitelli: 1997, 'Evolution of low mass stars'. Mem. Soc. Astron. Ital. 68, 807.
de Zeeuw, P. T., R. Hoogerwerf, J. H. J. de Bruijne, A. G. A. Brown, and A. Blaauw: 1999, 'A Hipparcos census of the nearby OB associations'. AJ 117, 354.
Deliyannis, C. P. and R. A. Malaney: 1995, 'Flare production of 6Li in population II stars'. ApJ 453, 810.
DeLuca, E. E. and P. A. Gilman: 1991, 'The solar dynamo'. In: A. Cox, W. C. Livingston, and M. S. Matthews (eds.): Solar interior and atmosphere. Tucson, p. 275, Univ. of Arizona Press.
Dempsey, R. C., J. L. Linsky, T. A. Fleming, and J. H. M. M. Schmitt: 1993a, 'The ROSAT all-sky survey of active binary coronae. I. Quiescent fluxes from the RS Canum Venaticorum systems'. ApJS 86, 599.
Dempsey, R. C., J. L. Linsky, T. A. Fleming, and J. H. M. M. Schmitt: 1993b, 'The ROSAT all-sky survey of active binary coronae. II. Coronal temperatures of the RS Canum Venaticorum systems'. ApJ 413, 333.
Dempsey, R. C., J. L. Linsky, T. A. Fleming, and J. H. M. M. Schmitt: 1997, 'The ROSAT allsky survey of active binary coronae. III. Quiescent coronal properties for the BY Draconistype binaries'. ApJ 478, 358.
Drake, J. J.: 1996a, 'Stellar spectroscopy with the Extreme Ultraviolet Explorer'. In: R. Pallavicini and A. K. Dupree (eds.): ASP Conf. Ser. 109: Cool Stars, Stellar Systems, and the Sun. p. 203, ASP, San Francisco.
Drake, J. J.: 1998, 'Excess helium as an explanation for metal deficiency in coronal plasma?'. ApJ 496, L33.
Drake, J. J.: 2001, 'Stellar coronae: the first 25 years'. In: R. Giacconi, L. Stella, and S. Serio (eds.): ASP Conf. Ser. 234: X-ray Astronomy 2000. p. 53, ASP, San Francisco.
Drake, J. J.: 2002, 'The chemical composition of stellar coronae'. In: F. Favata and J. J. Drake (eds.): Stellar coronae in the Chandra and XMM-Newton era, Vol. 277 of ASP Conference Series. San Francisco, p. 75, ASP.
Drake, J. J., J. M. Laming, and K. G. Widing: 1995, 'Stellar coronal abundances. 2: The first ionization potential effect and its absence in the corona of procyon'. ApJ 443, 393.
Drake, J. J., J. M. Laming, and K. G. Widing: 1996a, 'The FIP effect and abundance anomalies in late-type stellar coronae'. In: S. Bowyer and R. F. Malina (eds.): IAU Colloq. 152: Astrophysics in the Extreme Ultraviolet. p. 97.
Drake, J. J., R. A. Stern, G. S. Stringfellow, M. Mathioudakis, J. M. Laming, and D. L. Lambert: 1996b, 'Detection of quiescent extreme-ultraviolet emission from the very low mass dwarf van Biesbrowk 8: evidence for turbulent field dynamo'. ApJ 469, 828.
Drake, J. J., J. M. Laming, and K. G. Widing: 1997, 'Stellar coronal abundances V: evidence for the FIP effect in α Centauri'. ApJ 478, 403.
Drake, J. J., G. Peres, S. Orlando, J. M. Laming, and A. Maggio: 2000, 'On stellar coronae and solar active regions'. ApJ 545, 1074.
Drake, J. J., N. S. Brickhouse, V. Kashyap, J. M. Laming, D. P. Huenemoerder, R. Smith, and B. J. Wargelin: 2001, 'Enhanced noble gases in the coronae of active stars'. ApJ 548, L81.
Drake, J. J. and V. Kashyap: 2001, 'The coronal metallicity of the intermediate activity dwarf ξ Boo A'. ApJ 547, 428.
Drake, S. A.: 1996b, 'X-ray measurements of coronal abundances'. In: S. S. Holt and G. Sonneborn (eds.): ASP Conf. Ser. 99: Cosmic Abundances. p. 215, ASP, San Francisco.
Duncan, D. K., S. Baliunas, R. Noyes, and A. Vaughan: 1984, 'Chromospheric emission and rotation of the Hyades lower main sequence'. PASP 96, 707.
Dupree, A. K., N. S. Brickhouse, G. A. Doschek, J. C. Green, and J. C. Raymond: 1993, 'The extreme ultraviolet spectrum of α Aurigae (Capella)'. ApJ 418, L41.
Durney, B. R., D. S. de Young, and I. W. Roxburgh: 1993, 'On the generation of the large-scale and turbulent magnetic fields in solar-type stars'. Solar Phys. 145, 207.
Edlén, B.: 1945, 'The identification of the coronal lines (George Darwin Lecture)'. MNRAS 105, 323.
Edvardsson, B., J. Andersen, B. Gustafsson, et al.: 1993, 'The chemical evolution of the galactic disk'. A&A 275, 101.
Endl, M., K. G. Strassmeier, and M. Kurster: 1997, 'A large X-ray flare on HU Virginis'. A&A 328, 565.
Favata, F.: 2001, 'The coronal structure of active stars'. In: R. Giacconi, L. Stella, and S. Serio (eds.): ASP Conf. Ser. 234: X-ray Astronomy 2000. p. 234, ASP, San Francisco.
Favata, F., R. Rosner, S. Sciortino, and G. S. Vaiana: 1988, 'The stellar composition of X-ray surveys from the Einstein Observatory'. ApJ 324, 1010.
Favata, F., G. Micela, S. Sciortino, and G. S. Vaiana: 1992, 'The stellar coronal component of the Galaxy. I. The X-COUNT numerical model'. A&A 256, 86.
Favata, F., M. Barbera, G. Micela, and S. Sciortino: 1993, 'A search for yellow young disk population stars among EMSS stellar X-ray sources by means of lithium abundance determination'. A&A 277, 428.
Favata, F., M. Barbera, G. Micela, and S. Sciortino: 1995, 'Lithium, X-ray activity and rotation in an X-ray selected sample of solar-type stars'. A&A 295, 147.
Favata, F., G. Micela, S. Sciortino, and F. D'Antona: 1998, 'The evolutionary status of activity-selected solar-type stars and of T-Tauri stars as derived from Hipparcos parallaxes: evidence for a long-lived T-Tauri disk'. A&A 335, 218.
Favata, F. and J. H. M. M. Schmitt: 1999, 'Spectroscopic analysis of a super-hot giant flare observed on Algol by BeppoSAX on 30 August 1997'. A&A 350, 900.
Favata, F., G. Micela, and F. Reale: 2000a, 'The corona of AD Leo'. A&A 354, 1021.
Favata, F., G. Micela, F. Reale, S. Sciortino, and J. H. M. M. Schmitt: 2000b, 'The structure of the Algol corona from an analysis of all known X-ray flares: a consistent scenario for the X-ray and radio emission'. A&A 362, 628.
Favata, F., F. Reale, G. Micela, S. Sciortino, A. Maggio, and H. Matsumoto: 2000c, 'An extreme X-ray flare observed on EV Lac by the ASCA observatory in July 1998'. A&A 353, 987.
Favata, F., G. Micela, and F. Reale: 2001, 'Coronal structure geometries on pre-main sequence stars'. A&A 375, 485.
Favata, F., C. V. M. Fridlund, G. Micela, S. Sciortino, and A. A. Kaas: 2002, 'Discovery of X-ray emission from the protostellar jet L1551 IRS5 (HH 154)'. A&A 386, 204.
Feigelson, E., S. Casanova, T. Montmerle, and J. Guibert: 1993, 'ROSAT X-ray study of the Chamaleon dark cloud. I. The stellar population'. ApJ 416, 623.
Feigelson, E. D. and T. Montmerle: 1999, 'High-energy processes in young stellar objects'. ARA&A 37, 363.
Feigelson, E. D., P. Broos, J. A. Gaffney, et al.: 2002a, 'X-ray emitting young stars in the Orion nebula'. ApJ 574, 258.
Feigelson, E. D., G. P. Garmire, and S. H. Pravdo: 2002b, 'Magnetic flaring in the pre-main-sequence Sun and implications for the early solar system'. ApJ 572, 335.
Fekel, F. and S. Balachandran: 1993, 'Lithium and rapid rotation in chromospherically active single giants'. ApJ 403, 708.
Feldman, U.: 1992, 'Elemental abundances in the upper solar atmosphere'. Physica Scripta Volume T 46, 202.
Flaccomio, E., G. Micela, S. Sciortino, F. Damiani, F. Favata, F. R. Harnden, and J. Schachter: 2000, 'HRI observations of PMS stars in NGC 2264'. A&A 355, 651.
Flaccomio, E., F. Damiani, G. Micela, S. Sciortino, F. R. Harnden, S. S. Murray, and S. J. Wolk: 2003a, 'Chandra X-ray observations of the Orion nebula cluster. II Relationship between X-ray activity indicators and stellar parameters'. ApJ 582, 398.
Flaccomio, E., G. Micela, and S. Sciortino: 2003b, 'Observational clues for a role of circumstellar accretion in PMS X-ray activity'. A&A 397, 611.
Fleming, T. A., J. H. M. M. Schmitt, and M. S. Giampapa: 1995, 'Correlations of coronal X-ray emission with activity, mass and age of the nearby K and M dwarfs'. ApJ 450, 401.
Fleming, T. A., M. S. Giampapa, and J. H. M. M. Schmitt: 2000, 'An X-ray flare detected on the M8 dwarf VB 10'. ApJ 533, 372.
Fludra, A. and J. T. Schmelz: 1999, 'The absolute coronal abundances of sulfur, calcium, and iron from Yohkoh-BCS flare spectra'. A&A 348, 286.
Franciosini, E., S. Randich, and R. Pallavicini: 2000, 'A ROSAT HRI study of the open cluster NGC 3532'. A&A 357, 139.
Franciosini, E., R. Pallavicini, and G. Tagliaferri: 2001, 'BeppoSAX observation of a large long-duration X-ray flare from UX Arietis'. A&A 375, 196.
Gagné, M., J.-P. Caillault, and J. R. Stauffer: 1995a, 'Deep ROSAT HRI observations of the Orion nebula region'. ApJ 445, 280.
Gagné, M., J.-P. Caillault, and J. R. Stauffer: 1995b, 'Spectral and temporal characteristics of X-ray-bright stars in the Pleiades'. ApJ 450, 217.
Gehren, T., R. Ottmann, and J. Reetz: 1999, 'Photospheric metal abundances of AR Lacertae'. A&A 344, 221.
Giampapa, M. S.: 1984, 'Lithium abundances and chromospheric activity. I. Empirical results'. ApJ 277, 235.
Giampapa, M. S., R. Rosner, V. Kashyap, et al.: 1996, 'The coronae of low-mass dwarf stars'. ApJ 463, 707.
Giampapa, M. S., C. F. Prosser, and T. A. Fleming: 1998, 'X-Ray activity in the open cluster IC 4665'. ApJ 501, 624.
Giampapa, M. S. and T. A. Fleming: 2002, 'The coronae of low-mass stars and brown dwarfs'. In: F. Favata and J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 247, ASP, San Francisco.
Gioia, I. M., T. Maccacaro, R. E. Schild, A. Wolter, J. T. Stocke, S. L. Morris, and J. P. Henry: 1990, 'The Einstein observatory Extended Medium Sensitivity Survey. I. X-ray data and analysis'. ApJS 72, 567.
Glassgold, A. E., E. D. Feigelson, and T. Montmerle: 2000, 'Effects of energetic radiation in young stellar objects'. In: V. Mannings, A. P. Boss, and S. S. Russell (eds.): Protostars and planets IV. Tucson: University of Arizona Press, p. 429.
Golub, L.: 1983, 'Quiescent coronae of active chromosphere stars'. In: ASSL Vol. 102: IAU Colloq. 71: Activity in Red-Dwarf Stars. p. 83.
Graffagnino, V. G., D. Wonnacott, and S. Schaeidt: 1995, 'HR 5110 superflare: an interbinary flare identified?'. MNRAS 275, 129.
Güdel, M., A. O. Benz, J. H. M. M. Schmitt, and S. L. Skinner: 1996, 'The Neupert effect in active stellar coronae: chromospheric evaporation and coronal heating in the dMe flare star binary UV Ceti'. ApJ 471, 1002.
Güdel, M., E. F. Guinan, R. Mewe, J. S. Kaastra, and S. L. Skinner: 1997, 'A determination of the coronal emission measure distribution in the young solar analog EK Draconis from ASCA/EUVE spectra'. ApJ 479, 416.
Güdel, M., J. L. Linsky, A. Brown, and F. Nagase: 1999, 'Flaring and quiescent coronae of UX Arietis: results from ASCA and EUVE campaigns'. ApJ 511, 405.
Güdel, M., M. Audard, K. Briggs, F. Haberl, H. Magee, A. Maggio, R. Mewe, R. Pallavicini, and J. Pye: 2001a, 'The XMM-Newton view of stellar coronae: X-ray spectroscopy of the corona of AB Doradus'. A&A 365, L336.
Güdel, M., M. Audard, K. Briggs, F. Haberl, H. Magee, A. Maggio, R. Mewe, R. Pallavicini, and J. Pye: 2001b, 'The XMM-Newton view of stellar coronae: coronal structure in the Castor X-ray triplet'. A&A 365, L344.
Güdel, M., M. Audard, K. W. Smith, E. Behar, A. J. Beasley, and R. Mewe: 2002a, 'Detection of the Neupert effect in the corona of an RS Canum Venaticorum binary system by XMM-Newton and the Very Large Array'. ApJ 577, 371.
Güdel, M., M. Audard, K. W. Smith, et al.: 2002b, 'A systematic spectroscopic X-ray study of stellar coronae with XMM-Newton: early results'. In: Cool stars, stellar systems and the Sun 12 in press.
Güdel, M., M. Audard, A. Sres, R. Wehrli, E. Behar, R. Mewe., A. J. J. Raassen, and H. Magee: 2002c, 'XMM-Newton probes the solar past: coronal abundances of solar analogs at different ages'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 497, ASP, San Francisco.
Güdel, M., M. Audard, V. L. Kashyap, J. J. Drake, and E. F. Guinan: 2003a, 'Are coronae of magnetically active stars heated by flares? II. EUV and X-Ray flare statistics and the Differential Emission Measure distribution'. ApJ 582, 423.
Güdel, M., K. Arzner, M. Audard, and R. Mewe: 2003b, 'Tomography of a stellar corona: α Coronae Borealis'. A&A in press.
Guillout, P., M. Haywood, C. Motch, and A. C. Robin: 1996, 'The stellar content of soft X-ray surveys. I. An age-dependent numerical model'. A&A 316, 89.
Guillout, P., M. F. Sterzik, J. H. M. M. Schmitt, C. Motch, D. Egret, W. Voges and R. Neuhäuser: 1998a, 'The large-scale distribution of X-ray active stars'. A&A 334, 540.
Guillout, P., M. F. Sterzik, J. H. M. M. Schmitt, C. Motch, and R. Neuhäuser: 1998b, 'Discovery of a late-type stellar population associated with the Gould belt'. A&A 337, 113.
Guillout, P., J. H. M. M. Schmitt, D. Egret, W. Voges, C. Motch, and M. F. Sterzik: 1999, 'The stellar content of soft X-ray surveys. II. Cross-correlation of the ROSAT All-Sky Survey with the Tycho and Hipparcos catalogs'. A&A 351, 1003.
Gunn, A. G., V. Migenes, J. G. Doyle, R. E. Spencer, and M. Mathioudakis: 1997, 'Radio and extreme-ultraviolet observations of CF Tucanae'. MNRAS 287, 199.
Hénoux, J.: 1998, 'FIP fractionation: theory'. Space Science Reviews 85, 215.
Hamaguchi, K., H. Terada, A. Bamba, and K. Koyama: 2000, 'Large X-ray flare from a Herbig Be star, MWC297'. ApJ 532, 1111.
Hamaguchi, K., K. Koyama, S. Yamauchi, and H. Terada: 2002, 'X-ray study of Herbig Ae/Be stars, intermediate mass young stars'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 193, ASP, San Francisco.
Harmer, S., R. D. Jeffries, E. J. Totten, and J. P. Pye: 2001, 'X-rays from the open cluster NGC 6633'. MNRAS 324, 473.
Harnden, F. R., N. R. Adams, F. Damiani, J. J. Drake, N. R. Evans, F. Favata, P. Flaccomio, E. Freeman, R. D. Jeffries, V. Kashyap, G. Micela, B. M. Patten, N. Pizzolato, J. F. Schachter, S. Sciortino, J. Stauffer, S. J. Wolk, and M. V. Zombeck: 2001, 'Chandra observations of the open cluster NGC 2516'. ApJ 547, L141.
Harra, L. K.: 2002, 'The solar corona as seen by Yohkoh'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 277, ASP, San Francisco.
Hawley, S. L., G. H. Fisher, T. Simon, S. L. Cully, S. E. Deustua, M. Jablonski, C. M. Johns-Krull, B. R. Pettersen, V. Smith, W. J. Spiesman, and J. Valenti: 1995, 'Simultaneous Extreme-Ultraviolet Explorer and optical observations of AD Leonis: evidence for large coronal loops and the Neupert effect in stellar flares'. ApJ 453, 464.
Hempelmann, A., J. H. M. M. Schmitt, M. Schultz, G. Rüdiger, and K. Stèpie\({\text{n`}}\): 1995, 'Coronal X-ray emission and rotation of cool main sequence stars'. A&A 294, 515.
Hempelmann, A., J. H. M. M. Schmitt, and K. Stèpie\({\text{n`}}\): 1996, 'Coronal X-ray emission of cool stars in relation to chromospheric activity and magnetic cycles'. A&A 305, 284.
Hodgkin, S. T., R. F. Jameson, and I. A. Steele: 1995, 'Chromospheric and coronal activity of low-mass stars in the Pleiades'. MNRAS 274, 869.
Høg, E., C. Fabricius, V. V. Makarov, S. Urban, T. Corbin, G. Wycoff, U. Bastian, P. Schwekendiek, and A. Wicenec: 2000, 'The Tycho-2 catalogue of the 2.5 million brightest stars'. A&A 355, L27.
Hudson, H. S.: 1991, 'Solar flares, microflares, nanoflares, and coronal heating'. Solar Physics 133, 357.
Hudson, H. S., L. W. Acton, T. Hirayama, and Y. Uchida: 1992, 'White-light flares observed by YOHKOH'. Publ. Astr. Soc. Japan 44, L77.
Huenemoerder, D. P., C. R. Canizares, and N. S. Schulz: 2001, 'X-ray spectroscopy of II Pegasi: coronal temperature structure, abundances, and variability'. ApJ 559, 1135.
Huenemoerder, D. P., C. R. Canizares, and K. Kibbetts: 2002, 'X-ray spectra and light curves of AR Lac: temperature structure, abundances and variability'. In: Cool stars, stellar systems and the Sun 12 in press.
Imanishi, K., K. Koyama, and Y. Tsuboi: 2001, 'Chandra observation of the ρ Ophiuchi cloud'. ApJ 557, 747.
James, D. J. and R. D. Jeffries: 1997, 'Rotation, activity and lithium in NGC 6475'. MNRAS 292, 252.
Jardine, M. and Y. C. Unruh: 1999, 'Coronal emission and dynamo saturation'. A&A 346, 883.
Jeffries, R. D.: 1995, 'The kinematics of lithium-rich, active late-type stars: Evidence for a low-mass Local Association'. MNRAS 273, 559.
Jeffries, R. D., M. R. Thurston, and J. P. Pye: 1997, 'An X-ray survey of the young open cluster NGC 2516'. MNRAS 287, 350.
Jeffries, R. D. and A. J. Tolley: 1998, 'X-ray emission and low-mass stars in the young open cluster NGC 2547'. MNRAS 300, 331.
Jeffries, R. D., E. J. Totten, and D. J. James: 2000, 'Rotation and activity in the solar-type stars of NGC 2547'. MNRAS 316, 950.
Johnson, H. M.: 1981, 'An X-ray sampling of nearby stars'. ApJ 243, 234.
Johnson, H. M.: 1986, 'An unbiased X-ray sampling of stars within 25 parsecs of the sun'. ApJ 303, 470.
Johnson, O., J. J. Drake, V. Kashyap, N. S. Brickhouse, A. K. Dupree, P. Freeman, P. R. Young, and G. A. Kriss: 2002, 'The Capella giants and coronal evolution across the Hertzsprung gap'. ApJ 565, L97.
Jones, H. R. A., A. J. Longmore, F. Allard, and P. H. Hauschildt: 1996, 'Spectral analysis of M dwarfs'. MNRAS 280, 77.
Jordan, C.: 1980, 'The energy balance of the solar transition region'. A&A 86, 355.
Jordan, C., T. R. Ayres, A. Brown, J. L. Linsky, and T. Simon: 1987, 'The chromospheres and coronae of five G-K main-sequence stars'. MNRAS 225, 903.
Jordan, C., G. A. Doshek, J. J. Drake, A. B. Galvin, and J. C. Raymond: 1998, 'Coronal abundances: what are they?'. In: R. A. Donahue and J. A. Bookbinder (eds.): ASP Conf. Ser. 154: Cool Stars, Stellar Systems and the Sun, p. 91, ASP, San Francisco.
Judge, P.: 2002, 'Observational and interpretational challenges'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 45, ASP, San Francisco.
Kano, R. and S. Tsuneta: 1995, 'Scaling laws of solar coronal loops obtained with Yohkoh'. ApJ 454, 934.
Kashyap, V. and J. J. Drake: 1998, 'Markov-Chain Monte Carlo reconstruction of Emission Measure Distributions: application to solar extreme-ultraviolet spectra'. ApJ 503, 450.
Kashyap, V. and J. J. Drake: 1999, 'On X-ray variability in active binary stars'. ApJ 524, 988.
Kashyap, V., D. J. J., M. Audard, and M. Güdel: 2002, 'Flare heating of stellar coronae'. In: F. Favata and J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 503, ASP, San Francisco.
Kastner, J. H., D. P. Huenemoerder, N. S. Schulz, C. R. Canizares, and D. A. Weintraub: 2002, 'Evidence for accretion: high-resolution X-ray spectroscopy of the Classical T Tauri Star TW Hydrae'. ApJ 567, 434.
Klimchuck, J. A.: 2002, 'Scaling laws for solar and stellar coronae'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 321, ASP, San Francisco.
Kopp, R. A. and G. Poletto: 1984, 'Extension of the reconnection theory of two-ribbon solar flares'. Solar Physics 93, 351.
Krishnamurthi, A., C. S. Reynolds, J. L. Linsky, E. Martín, and M. Gagné: 2001, 'Observations of the core of the Pleiades with the Chandra X-ray observatory'. AJ 121, 337.
Kürster, M. and J. H. M. M. Schmitt: 1996, 'Forty days in the life of CF Tucanae (=HD 5305). The longest stellar X-ray flare observed with ROSAT'. A&A 311, 211.
Lachaume, R., C. Dominik, T. Lanz, and H. J. Habing: 1999, 'Age determinations of main-sequence stars: combining different methods'. A&A 348, 897.
Laming, J. M.: 2002, 'Should you trust the atomic data?'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 25, ASP, San Francisco.
Laming, J. M., J. J. Drake, and K. G. Widing: 1996, 'Stellar coronal abundances. IV. Evidence of the FIP effect in the corona of ɛ Eridani?'. ApJ 462, 948.
Lawson, W. A., E. D. Feigelson, and D. P. Huenemoerder: 1996, 'An improved HR diagram for Chamaeleon I pre-main-sequence stars'. MNRAS 280, 1071.
Lean, J.: 1997, 'The Sun's variable radiation and its relevance for Earth'. ARA&A 35, 33.
Lim, J. and S. M. White: 1996, 'Limits to mass outflows from late-type dwarf stars'. ApJ 462, L91.
Linsky, J. L., B. E. Wood, A. Brown, and R. A. Osten: 1998, 'Dissecting Capella's corona: GHRS spectra of the Fe XXI λ 1354 and He II λ 1640 lines from each of the Capella stars'. ApJ 492, 767.
Linsky, J. L. and M. Gagné: 2001, 'Analysis of Chandra X-ray spectra of the young, active star AB Dor'. In: American Astronomical Society Meeting, Vol. 198. p. 4405.
Maggio, A., S. Sciortino, G. S. Vaiana, P. Majer, J. Bookbinder, L. Golub, F. R. Harnden, and R. Rosner: 1987, 'Einstein observatory survey of X-ray emission from solar-type stars: the late F and G dwarf stars'. ApJ 315, 687.
Maggio, A., R. Pallavicini, F. Reale, and G. Tagliaferri: 2000, 'Twin X-ray flares and the active corona of AB Dor observed with BeppoSAX'. A&A 356, 627.
Maggio, A., J. J. Drake, V. Kashyap, G. Micela, S. Sciortino, G. Peres, F. R. Harnden, and S. S. Murray: 2002, 'AD Leo observed with Chandra LETGS: emission measure distribution, density and element abundances of the coronal plasma'. In: F. Favata and J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 57, ASP, San Francisco.
Majer, P., J. H. M. M. Schmitt, L. Golub, F. R. Harnden, and R. Rosner: 1986, 'X-ray spectra and the rotation-activity connection of RS Canum Venaticorum binaries'. ApJ 300, 360.
Mandrini, C. H., P. Démoulin, and J. A. Klimchuk: 2000, 'Magnetic field and plasma scaling laws: their implications for coronal heating models'. ApJ 530, 999.
Marino, A., G. Micela, and G. Peres: 2000, 'A systematic analysis of X-ray variability of dM stars'. A&A 353, 177.
Marino, A., G. Micela, G. Peres, and S. Sciortino: 2002, 'On X-ray variability in ROSAT-PSPC observations of F7-K2 stars'. A&A 383, 210.
Martín, E. L. and H. Bouy: 2002, 'XMM-Newton observations of the nearby brown dwarf LP 944-20'. New Astronomy 7, 595.
McGale, P. A., J. P. Pye, and S. T. Hodgkin: 1996, 'ROSAT PSPC X-ray spectral survey of W UMa systems'. MNRAS 280, 627.
McWilliam, A.: 1997, 'Abundance ratios and Galactic chemical evolution'. ARA&A 35, 503.
Mermilliod, J.-C.: 1997, 'Radial velocities and binarity in open clusters'. Mem. Soc. Astron. Ital. 68, 853.
Mermilliod, J.-C., C. Turon, N. Robichon, F. Arenou, and Y. Lebreton: 1997, 'The distance of the Pleiades and nearby clusters, ESA SP-402'. In: M. A. C. Perryman and P. L. Bernacca (eds.): Hipparcos Venice 97. Noordwijk, p. 643, ESA.
Mewe, R.: 1999, 'Atomic physics of hot plasmas'. In: J. van Paradijs and J. A. M. Bleeker (eds.): X-ray spectroscopy in astrophysics, Vol. 520 of Lecture Notes in Physics. p. 109, Springer.
Mewe, R., J. Heise, E. H. B. M. Gronenschild, A. C. Brinkman, J. Schrijver, and A. J. F. den Boggende: 1975, 'Detection of X-ray emission from stellar coronae with ANS'. ApJ 202, L67.
Mewe, R., J. S. Kaastra, S. M. White, and R. Pallavicini: 1996, 'Simultaneous EUVE &; ASCA observations of AB Doradus: temperature structure and abundances of the quiescent corona'. A&A 315, 170.
Mewe, R., J. S. Kaastra, G. H. J. van den Oord, J. Vink, and Y. Tawara: 1997, 'ASCA and EUVE observations of II Pegasi: flaring and quiescent coronal emission'. A&A 320, 147.
Mewe, R., A. J. J. Raassen, J. J. Drake, J. S. Kaastra, R. L. J. van der Meer, and D. Porquet: 2001, 'Chandra-LETGS X-ray observations of Capella. Temperature, density and abundance diagnostics'. A&A 368, 888.
Meyer, J.-P.: 1985, 'Solar-stellar outer atmospheres and energetic particles, and galactic cosmic rays'. ApJS 57, 173.
Micela, G.: 2001, 'X-ray emission from open clusters'. In: R. Giacconi, L. Stella, and S. Serio (eds.): ASP Conf. Ser. 234: X-ray Astronomy 2000. p. 143, ASP, San Francisco.
Micela, G.: 2002, 'Evolution of stellar coronal activity on the main sequence'. In: B. Montesinos, A. Gimenez, and E. F. Guinan (eds.): ASP Conf. Ser. 269: The evolving Sun and its influence on planetary environments. p. 107, ASP, San Francisco.
Micela, G., S. Sciortino, and S. Serio: 1984, 'The relationship between X-ray luminosity and Rossby number for a sample of late-type stars'. In: M. Oda and R. Giacconi (eds.): X-Ray Astronomy '84. p. 43.
Micela, G., S. Sciortino, S. Serio, and et al.: 1985, 'Einstein X-ray survey of the Pleiades: the dependence of X-ray emission on stellar age'. ApJ 292, 172.
Micela, G., S. Sciortino, G. S. Vaiana, and et al.: 1988, 'The Einstein observatory survey of stars in the Hyades cluster region'. ApJ 325, 798.
Micela, G., S. Sciortino, G. Vaiana, and et al.: 1990, 'X-ray studies of coeval star samples. II. The Pleiades cluster as observed with the Einstein observatory'. ApJ 348, 557.
Micela, G., S. Sciortino, and F. Favata: 1993, 'Stellar birthrate in the Galaxy in the past billion years: constraints from X-ray flux limited surveys'. ApJ 412, 618.
Micela, G., S. Sciortino, V. Kashyap, F. R. Harnden, and R. Rosner: 1996, 'ROSAT observations of the Pleiades cluster. I—X-ray characteristics of a coeval stellar population'. ApJS 102, 75.
Micela, G., F. Favata, and S. Sciortino: 1997a, 'Hipparcos distances of X-ray selected stars: implications on their nature as stellar population'. A&A 326, 221.
Micela, G., J. P. Pye, and S. Sciortino: 1997b, 'Coronal properties of nearby old disk and halo dM stars'. A&A 320, 865.
Micela, G., S. Sciortino, F. R. Harnden, and R. Rosner: 1998, 'X-ray variability and rotation in the Pleiades cluster'. Ap&SS 261, 105.
Micela, G., S. Sciortino, F. Favata, R. Pallavicini, and J. Pye: 1999a, 'X-ray observations of the young open cluster Blanco 1'. A&A 344, 83.
Micela, G., S. Sciortino, F. R. Harnden, V. Kashyap, R. Rosner, C. F. Prosser, F. Damiani, J. Stauffer, and J.-P. Caillault: 1999b, 'Deep ROSAT HRI observations of the Pleiades'. A&A 341, 751.
Micela, G., S. Sciortino, R. D. Jeffries, M. R. Thurston, and F. Favata: 2000, 'Rosat HRI observations of the open cluster NGC 2516'. A&A 357, 909.
Montmerle, T., L. Koch-Miramond, E. Falgarone, and J. E. Grindlay: 1983, 'Einstein observations of the p Ophiuchi dark cloud: an X-ray Christmas tree'. ApJ 269, 182.
Motch, C., P. Guillout, F. Haberl, et al.: 1997, 'The ROSAT galactic plane survey: analysis of a low latitude sample area in Cygnus'. A&A 318, 111.
Mullan, D. J., J. G. Doyle, R. O. Redman, and M. Mathioudakis: 1992, 'Limits on the detectability of mass loss from cool dwarfs'. ApJ 397, 225.
Mutel, R. L., L. A. Molnar, E. B. Waltman, and F. D. Ghigo: 1998, 'Radio emission from Algol. I. Coronal geometry and emission mechanisms determined from VLBA and Green Bank interferometer observations'. ApJ 507, 371.
Ness, J.-U., R. Mewe, J. H. M. M. Schmitt, A. J. J. Raassen, D. Porquet, J. S. Kaastra, R. L. J. van der Meer, V. Burwitz, and P. Predehl: 2001, 'Helium-like triplet density diagnostics. Applications to Chandra-LETGS X-ray observations of Capella and Procyon'. A&A 367, 282.
Ness, J.-U., R. Mewe, J. H. M. M. Schmitt, and A. J. J. Raassen: 2002a, 'Influence of radiation fields on the density diagnostics. Chandra-LEGTS observations of Algol and Procyon'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 545, ASP, San Francisco.
Ness, J.-U., J. H. M. M. Schmitt, V. Burwitz, R. Mewe, and P. Predehl: 2002b, 'Chandra LETGS observation of the active binary Algol'. A&A 387, 1032.
Neuhäuser, R., C. Briceño, F. Comerón, T. Hearty, E. L. Martín, J. H. M. M. Schmitt, B. Stelzer, R. Supper, W. Voges, and H. Zinnecker: 1999, 'Search for X-ray emission from bona-fide and candidate brown dwarfs'. A&A 343, 883.
Neupert, W. M.: 1968, 'Comparison of solar X-ray line emission with microwave emission during flares'. ApJ 153, L59.
Ng, Y. K. and G. Bertelli: 1998, 'Revised ages for stars in the solar neighborhood'. A&A 329, 943.
Noyes, R. W., L. W. Hartmann, S. L. Baliunas, D. K. Duncan, and A. H. Vaughan: 1984, 'Rotation, convection, and magnetic activity in lower main-sequence stars'. ApJ 279, 763.
Orlando, S., G. Peres, and F. Reale: 2000, 'The Sun as an X-ray star. I. Deriving the emission measure distribution versus temperature of the whole solar corona from the Yohkoh/Soft X-ray telescope data'. ApJ 528, 524.
Orlando, S., G. Peres, and F. Reale: 2001, 'The Sun as an X-ray star. IV. The contribution of different regions of the corona to its X-ray spectrum'. ApJ 560, 499.
Ortolani, A., R. Pallavicini, A. Maggio, F. Reale, and S. White: 1998, 'Flares on AB Dor observed with ASCA'. In: R. A. Donahue and J. A. Bookbinder (eds.): ASP Conf. Ser. 154: Cool Stars, Stellar Systems and the Sun, p. 1532, ASP, San Francisco.
Osten, R. A. and A. Brown: 1999, 'EUVE photometry of RS CVn systems: four flaring megasecond'. ApJ 515, 746.
Osten, R. A., A. Brown, T. R. Ayres, et al.: 2000, 'Radio, X-ray and EUV coronal variability of the short-period RS CVn binary σ2 Coronae Borealis'. ApJ 544, 953.
Ottmann, R. and J. H. M. M. Schmitt: 1996, 'ROSAT observations of a giant X-ray flare on Algol: evidence for abundance variations?'. A&A 307, 813.
Ottmann, R., M. J. Pfeiffer, and T. Gehren: 1998, 'Photospheric metal abundances in active stellar atmospheres'. A&A 338, 661.
Pagano, I., J. L. Linsky, L. Carkner, R. D. Robinson, B. Woodgate, and G. Timothy: 2000, 'HST/STIS echelle spectra of the dM1e star AU Microscopii outside of flares'. ApJ 532, 497.
Pallavicini, R., S. Serio, and G. S. Vaiana: 1977, 'A survey of soft X-ray limb flare images — The relation between their structure in the corona and other physical parameters'. ApJ 216, 108.
Pallavicini, R., L. Golub, R. Rosner, G. S. Vaiana, T. Ayres, and J. L. Linsky: 1981, 'Relations among stellar X-ray emission observed from Einstein, stellar rotation and bolometric luminosity'. ApJ 248, 279.
Pallavicini, R., G. Tagliaferri, and L. Stella: 1990, 'X-ray emission from solar neighborhood flare stars: a comprehensive survey of EXOSAT results'. A&A 228, 403.
Pan, H. C., C. Jordan, K. Makishima, et al.: 1997, 'An exceptional X-ray flare on the dMe star EQ1839.6+8002'. MNRAS 285, 735.
Panzera, M. R., G. Tagliaferri, L. Pasinetti, and E. Antonello: 1999, 'X-ray emission from A0-F6 spectral type stars'. A&A 348, 161.
Parker, E. N.: 1988, 'Nanoflares and the solar X-ray corona'. ApJ 330, 474.
Parnell, C. E. and P. E. Jupp: 2000, 'Statistical analysis of the energy distribution of nanoflares in the quiet sun'. ApJ 529, 554.
Patten, B. M. and T. Simon: 1993, 'The evolution of stellar coronae: initial results from a ROSAT PSPC observation of IC 2391'. ApJ 415, L123.
Patten, B. M. and T. Simon: 1996, 'The evolution of rotation and activity in young open clusters: IC 2391'. ApJS 106, 489.
Pease, D., J. J. Drake, V. Kashyap, P. W. Ratzlaff, S. H. Saar, B. Haisch, A. Dobrzycki, N. R. Adams, and S. J. Wolk: 2002, 'A lot of observations of the coronae of AR Lac'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 551, ASP, San Francisco.
Peres, G., S. Orlando, F. Reale, R. Rosner, and H. Hudson: 2000, 'The Sun as an X-ray star. II. Using the Yohkoh/Soft X-ray telescope-derived solar emission measure versus temperature to interpret stellar x-ray observations'. ApJ 528, 537.
Peres, G., S. Orlando, F. Reale, and R. Rosner: 2001, 'The distribution of the emission measure, and of the heating budget, among the loops in the corona'. ApJ 563, 1045.
Phillips, K. J. H., A. K. Bhatia, H. E. Mason, and D. M. Zarro: 1996, 'High coronal electron densities in a solar flare from Fe XXI and Fe XXII X-ray line measurements'. ApJ 466, 549.
Pillitteri, I., G. Micela, S. Sciortino, and F. Favata: 2002, 'The X-ray luminosity distributions of the high-metallicity open cluster Blanco 1'. A&A in press.
Pizzolato, N., P. Ventura, F. D'Antona, A. Maggio, G. Micela, and S. Sciortino: 2001, 'Subphotospheric convection and magnetic activity dependence on metallicity and age: Models and tests'. A&A 373, 597.
Pizzolato, N., A. Maggio, G. Micela, S. Sciortino, and P. Ventura: 2003, 'The stellar activity-rotation relationship revisited: dependence of saturated and non-saturated X-ray emission regimes on spectral class for late-type MS stars'. A&A 397, 147.
Porter, L. J. and J. A. Klimchuck: 1995, 'Soft X-ray loops and coronal heating'. ApJ 454, 499.
Pottasch, S. R.: 1963a, 'The lower solar corona: interpretation of the ultraviolet spectrum'. ApJ 137, 945.
Pottasch, S. R.: 1963b, 'The lower solar corona: the abundance of iron'. MNRAS 125, 543.
Pravdo, S. H., E. D. Feigelson, G. Garmire, Y. Maeda, Y. Tsuboi, and J. Bally: 2001, 'Discovery of X-rays from the protostellar outflow object HH2'. Nat 413, 708.
Preibisch, T., H. Zinnecker, and J. H. M. M. Schmitt: 1993, 'ROSAT-detection of a giant X-ray flare on LkHα 92'. A&A 279, L33.
Preibisch, T., R. Neuhäuser, and J. M. Alcalá: 1995, 'A giant X-ray flare on the young star P1724'. A&A 304, L13.
Preibisch, T. and H. Zinnecker: 2001, 'Deep Chandra X-ray observatory imaging study of the very young stellar cluster IC 348'. AJ 122, 866.
Preibisch, T. and H. Zinnecker: 2002, 'X-ray properties of the young stellar and substellar objects in the IC 348 cluster: the Chandra view'. AJ 123, 1613.
Prosser, C. F., S. Randich, J. R. Stauffer, J. H. M. M. Schmitt, and T. Simon: 1996, 'ROSAT pointed observations of the α Persei cluster'. AJ 112, 1570.
Pye, J. P. and I. M. McHardy: 1983, 'The Ariel V sky survey of fast-transient X-ray sources'. MNRAS 205, 875.
Pye, J. P., S. Hodgkin, R. Stern, and J. Stauffer: 1994, 'ROSAT X-ray luminosity functions of the Hyades dK and dM stars'. MNRAS 266, 798.
Raassen, A. J. J., R. Mewe, M. Audard, M. Güdel, E. Behar, J. S. Kaastra, R. L. J. van der Meer, C. R. Foley, and J.-U. Ness: 2002, 'High-resolution X-ray spectroscopy of Procyon by Chandra and XMM-Newton'. A&A 389, 228.
Radick, R. R., G. W. Lockwood, B. A. Skiff, and D. T. Thompson: 1995, 'A 12 year photometric study of lower main-sequence Hyades stars'. ApJ 452, 332.
Randich, S.: 1998, 'Supersaturation in X-ray emission of cluster stars'. In: R. A. Donahue and J. A. Bookbinder (eds.): ASP Conf. Ser. 154: Cool Stars, Stellar Systems, and the Sun, p. 501, ASP, San Francisco.
Randich, S.: 2000, 'Coronal activity among open cluster stars'. In: R. Pallavicini, G. Micela, and S. Sciortino (eds.): ASP Conf. Ser. 198: Stellar Clusters and Associations: Convection, Rotation, and Dynamos. p. 401, ASP, San Francisco.
Randich, S., R. G. Gratton, and R. Pallavicini: 1993, 'Lithium in RS CVn binaries and related chromospherically active stars. II. Spectrum synthesis analysis'. A&A 273, 194.
Randich, S., M. S. Giampapa, and R. Pallavicini: 1994, 'Lithium in RS CVn binaries and related chromospherically active stars. III. Northern RS CVn systems'. A&A 283, 893.
Randich, S. and J. H. M. M. Schmitt: 1995, 'A ROSAT X-ray study of the Praesepe cluster'. A&A 298, 115.
Randich, S., J. H. M. M. Schmitt, C. F. Prosser, and J. R. Stauffer: 1995, 'A X-ray study of the young open cluster IC 2602'. A&A 300, 134.
Randich, S., J. H. M. M. Schmitt, and C. Prosser: 1996a, 'Coronal activity in the Coma Berenices open cluster'. A&A 313, 815.
Randich, S., J. H. M. M. Schmitt, C. F. Prosser, and J. R. Stauffer: 1996b, 'The X-ray properties of the young open cluster around α Persei'. A&A 305, 785.
Randich, S., K. P. Singh, T. Simon, S. A. Drake, and J. H. M. M. Schmitt: 1998, 'ROSAT HRI observations of the intermediate-age open cluster IC 4756'. A&A 337, 372.
Reale, F.: 2002, 'Stellar flare modeling'. In: F. Favata and J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 103, ASP, San Francisco.
Reale, F., R. Betta, G. Peres, S. Serio, and J. McTiernan: 1997, 'Determination of the length of coronal loops from the decay of X-ray flares. I. Solar flares observed with Yohkoh SXT'. A&A 325, 782.
Reale, F. and G. Micela: 1998, 'Determination of the length of coronal loops from the decay of X-ray flares. II. Stellar flares observed with ROSAT/PSPC'. A&A 334, 1028.
Reale, F., G. Peres, and S. Orlando: 2001, 'The Sun as an X-ray star. III. Flares'. ApJ 557, 906.
Reale, F., F. Bocchino, and G. Peres: 2002, 'Modeling non-confined coronal flares: dynamics and X-ray diagnostics'. A&A 383, 952.
Reid, N., S. Hawley, and M. Mateo: 1995, 'Chromospheric and coronal activity in low-mass Hyades dwarfs'. MNRAS 272, 828.
Rice, J. B. and K. G. Strassmeier: 2001, 'Doppler imaging of stellar surface structure. XVII. The solar-type Pleiades star HII 314 = V1038 Tauri'. A&A 377, 264.
Robinson, R. D., J. L. Linsky, B. E. Woodgate, and J. G. Timothy: 2001, 'Far-ultraviolet observations of flares on the dM0e star AU Microscopii'. ApJ 554, 368.
Rosner, R., W. H. Tucker, and G. S. Vaiana: 1978, 'Dynamics of the quiescent solar corona'. ApJ 220, 643.
Rosner, R., Y. Avni, J. Bookbinder, R. Giacconi, L. Golub, F. R. Harnden, C. W. Maxson, K. Topka, and G. S. Vaiana: 1981, 'The stellar contribution to the galactic soft X-ray background'. ApJ 249, L5.
Rucinski, S. M.: 1998, 'Extreme Ultraviolet Explorer investigation of three short-period binary stars'. AJ 115, 303.
Rutledge, R. E., G. Basri, E. L. Martín, and L. Bildsten: 2000, 'Chandra detection of an X-ray flare from the brown dwarf LP 944-20'. ApJ 538, L141.
Saar, S. H.: 1991, 'Recent advances in the observation and analysis of stellar magnetic fields'. In: I. Tuominen, D. Moss, and G. Ruediger (eds.): IAU Colloquium 130, The Sun and Cool Stars: activity, magnetism, dynamos. Berlin: Springer, p. 389.
Sanz Forcada, J.: 2001, 'Las coronas estelares de los sistemas binarios activos'. Ph.D. thesis, Univ. Complutense de Madrid, Madrid, Spain.
Sanz-Forcada, J. and G. Micela: 2002, 'The EUVE point of view of AD Leo'. A&A 394, 653.
Sanz-Forcada, J., N. S. Brickhouse, and A. K. Dupree: 2002a, 'Quiescent and flaring structure in RS Canum Venaticorum stars'. ApJ 570, 799.
Sanz-Forcada, J., N. S. Brickhouse, and A. K. Dupree: 2003, 'The structure of stellar coronae in active binary systems'. ApJS 145, 147.
Schmitt, J. H. M. M.: 1994, 'ROSAT observations of stellar flares'. ApJS 90, 735.
Schmitt, J. H. M. M.: 1997, 'Coronae on solar-like stars'. A&A 318, 215.
Schmitt, J. H. M. M.: 1998, 'Inference of stellar coronal structure'. In: R. A. Donahue and J. A. Bookbinder (eds.): ASP Conf. Ser. 154: Cool Stars, Stellar Systems and the Sun, p. 463, ASP, San Francisco.
Schmitt, J. H. M. M., L. Golub, F. R. Harnden, C. Maxson, R. Rosner, and G. S. Vaiana: 1985, 'An Einstein observatory X-ray survey of main-sequence stars with shallow convection zones'. ApJ 290, 307.
Schmitt, J. H. M. M., A. Collura, S. Sciortino, et al.: 1990a, 'Einstein observatory coronal temperatures of late-type stars'. ApJ 365, 704.
Schmitt, J. H. M. M., G. Micela, S. Sciortino, G. S. Vaiana, F. R. Harnden, and R. Rosner: 1990b, 'X-ray studies of coeval star samples. III — X-ray emission in the Ursa Major stream'. ApJ 351, 492.
Schmitt, J. H. M. M., P. Kahabka, J. Stauffer, and A. J. M. Piters: 1993, 'ROSAT All-Sky X-ray Survey of the core region of the Pleiades cluster'. A&A 277, 114.
Schmitt, J. H. M. M. and M. Kurster: 1993, 'A spatially resolved x-ray image of a star like the Sun'. Science 262, 215.
Schmitt, J. H. M. M., T. A. Fleming, and M. S. Giampapa: 1995, 'The X-ray view of the low mass stars in the solar neighborhood'. ApJ 450, 392.
Schmitt, J. H. M. M., J. J. Drake, B. M. Haisch, and R. A. Stern: 1996a, 'A close look at the coronal density of Procyon'. ApJ 467, 841.
Schmitt, J. H. M. M., R. A. Stern, J. J. Drake, and M. Kürster: 1996b, 'CF Tucanae: another case of a coronal MAD syndrome?'. ApJ 464, 898.
Schmitt, J. H. M. M. and F. Favata: 1999, 'Continuous heating of a giant X-ray flare on Algol'. Nat 401, 44.
Schmitt, J. H. M. M. and C. Liefke: 2002, 'X-ray emission from the ultracool dwarf LHS 2065'. A&A 382, L9.
Schulz, N., C. R. Canizares, D. P. Huenemoerder, J. C. Lee, and K. Tibetts: 2002, 'X-ray plasma diagnostics of stellar winds in very young massive stars'. In: F. Favata and J. J. Drake (eds.): ASP Conf. Ser. 277: Stellar coronae in the Chandra and XMM era. p. 165, ASP, San Francisco.
Schwabe, H.: 1843, 'Solar observations during 1843'. Astronomische Nachrichten 20.
Sciortino, S., G. Micela, F. Favata, A. Spagna, and M. G. Lattanzi: 2000, 'ROSAT HRI survey of the open cluster Stock 2'. A&A 357, 460.
Sciortino, S., G. Micela, F. Damiani, et al.: 2001, 'XMM-Newton survey of the low-metallicity open cluster NGC 2516'. A&A 365, L259.
Serio, S., G. Peres, G. S. Vaiana, L. Golub, and R. Rosner: 1981, 'Closed coronal structures. II — Generalized hydrostatic model'. ApJ 243, 288.
Serio, S., F. Reale, J. Jakimiec, B. Sylwester, and J. Sylwester: 1991, 'Dynamics of flaring loops. I. Thermodynamic decay scaling laws'. A&A 241, 197.
Sheeley, N. R.: 1996, 'Elemental abundance variations in the solar atmosphere'. ApJ 469, 423.
Siarkowski, M.: 1992, 'Three-dimensional deconvolution of X-ray emission from AR Lac'. MNRAS 259, 453.
Siarkowski, M., P. Pres, S. A. Drake, N. E. White, and K. P. Singh: 1996, 'Corona(e) of AR Lacertae. II. The spatial structure'. ApJ 473, 470.
Siess, L., E. Dufour, and M. Forestini: 2000, 'An internet server for pre-main sequence tracks of low-and intermediate-mass stars'. A&A 358, 593.
Simon, T. and W. B. Landsman: 1997, 'High chromospheres of late A stars'. ApJ 483, 435.
Simon, T. and B. M. Patten: 1998, 'A deep X-ray image of IC 2391'. PASP 110, 283.
Singh, K. P., S. A. Drake, and N. E. White: 1995, 'A study of the coronal X-ray emission from short-period Algol binaries'. ApJ 445, 840.
Singh, K. P., S. A. Drake, and N. E. White: 1996a, 'RS CVn versus Algol-type binaries: a comparative study of their X-ray emission'. AJ 111, 2415.
Singh, K. P., N. E. White, and S. A. Drake: 1996b, 'Corona(e) of AR Lac: I. The temperature and abundance distribution'. ApJ 456, 766.
Skumanich, A.: 1972, 'Time scales for Ca II emission decay, rotational braking, and lithium depletion'. ApJ 171, 565.
Soderblom, D. R., B. F. Jones, S. Balachandran, J. R. Stauffer, D. K. Duncan, S. B. Fedele, and J. D. Hudon: 1993, 'The evolution of the lithium abundances of solar-type stars. III. The Pleiades'. AJ 106, 1059.
Solanki, S. K., S. Motamen, and R. Keppens: 1997, 'Polar spots and stellar spindown: is dynamo saturation needed?'. A&A 325, 1039.
Soon, W., S. Baliunas, E. S. Posmentier, and P. Okeke: 2000, 'Variations of solar coronal hole area and terrestrial lower tropospheric air temperature from 1979 to mid-1998: astronomical forcings of change in earth's climate?'. New Astronomy 4, 563.
Stauffer, J. R., J.-P. Caillault, M. Gagné, C. F. Prosser, and L. W. Hartmann: 1994, 'A deep imaging survey of the Pleiades with ROSAT'. ApJS 91, 625.
Stelzer, B., R. Neuhäuser, S. Casanova, and T. Montmerle: 1999, 'Rotational modulation of X-ray flares on late-type stars: T Tauri stars and Algol'. A&A 344, 154.
Stelzer, B. and R. Neuhäuser: 2001, 'X-ray emission from young stars in Taurus-Auriga-Perseus: Luminosity functions and the rotation — activity — age — relation'. A&A 377, 538.
Stelzer, B., V. Burwitz, M. Audard, M. Güdel, J.-U. Ness, N. Grosso, R. Neuhäuser, J. H. M. M. Schmitt, P. Predehl, and B. Aschenbach: 2002, 'Simultaneous X-ray spectroscopy of YY Gem with Chandra and XMM-Newton'. A&A 392, 585.
Stern, R. A.: 1998, 'Long-term X-ray variability in cool stars'. In: R. A. Donahue and J. A. Bookbinder (eds.): ASP Conf. Ser. 154: Cool Stars, Stellar Systems and the Sun, p. 223, ASP, San Francisco.
Stern, R. A., M. C. Zolcinski, S. K. Antiochos, and J. H. Underwood: 1981, 'Stellar coronae in the Hyades — A soft X-ray survey with the Einstein Observatory'. ApJ 249, 647.
Stern, R. A., S. K. Antiochos, and F. R. Harnden: 1986, 'Modeling of coronal X-ray emission from active cool stars. I Hyades cluster'. ApJ 305, 417.
Stern, R. A., J. H. M. M. Schmitt, C. Rosso, J. P. Pye, S. T. Hodgkin, and J. R. Stauffer: 1992a, 'First results from ROSAT all-sky survey observations of the Hyades cluster'. ApJ 399, L159.
Stern, R. A., Y. Uchida, S. Tsuneta, and F. Nagase: 1992b, 'GINGA observations of X-ray flares on Algol'. ApJ 400, 321.
Stern, R. A., J. H. M. M. Schmitt, J. P. Pye, S. T. Hodgkin, J. R. Stauffer, and T. Simon: 1994, 'Coronal X-ray sources in the Hyades: A 40 kilosecond ROSAT pointing'. ApJ 427, 808.
Stern, R. A., J. R. Lemen, J. H. M. M. Schmitt, and J. P. Pye: 1995a, 'EUVE observations of Algol: detection of a continuum and implications for the coronal [Fe/H] abundance'. ApJ 444, L45.
Stern, R. A., J. H. M. M. Schmitt, and P. T. Kahabka: 1995b, 'ROSAT All-Sky Survey Observations of the Hyades Cluster'. ApJ 448, 683.
Sterzik, M. F. and J. H. M. M. Schmitt: 1997, 'Young cool stars in the solar neighborhood'. AJ 114, 1673.
Strassmeier, K., D. Hall, F. Fekel, and M. Check: 1993, 'A catalog of chromospherically active binary stars (second edition)'. A&AS 100, 173.
Stuik, R., J. H. M. J. Bruls, and R. J. Rutten: 1997, 'Modeling Li I and K I sensitivity to Pleiades activity'. A&A 322, 911.
Swank, J. H. and N. E. White: 1980, 'X-ray spectroscopy of late-type stars'. In: A. K. Dupree (ed.): SAO Special Report 389: Cool Stars, Stellar Systems, and the Sun. p. 47.
Swank, J. H., N. E. White, S. S. Holt, and R. H. Becker: 1981, 'Two-component X-ray emission from RS Canum Venaticorum binaries'. ApJ 246, 208.
Sylwester, B., J. Sylwester, S. Serio, et al.: 1993, 'Dynamics of flaring loops. III — Interpretation of flare evolution in the emission measure-temperature diagram'. A&A 267, 586.
Sylwester, J., J. R. Lemen, R. D. Bentley, A. Fludra, and M.-C. Zolcinski: 1998, 'Detailed evidence for flare-to-flare variations of the coronal calcium abundance'. ApJ 501, 397.
Tagliaferri, G., G. Cutispoto, R. Pallavicini, S. Randich, and L. Pasquini: 1994, 'Photometric and spectroscopic studies of cool stars discovered in EXOSAT X-ray images. II. Lithium abundances'. A&A 285, 272.
Testa, P., G. Peres, F. Reale, and S. Orlando: 2002, 'Temperature and density structure of hot and cool loops derived from the analysis of TRACE data'. ApJ 580, 1159.
Tobias, S. M., N. H. Brummell, T. L. Clune, and J. Toomre: 1998, 'Pumping of Magnetic Fields by Turbulent Penetrative Convection'. ApJ 502, L177.
Topka, K., L. Golub, P. Gorenstein, F. R. Harnden, G. S. Vaiana, Y. Avni, and R. Rosner: 1982, 'A magnitude limited stellar X-ray survey and the F star X-ray luminosity function'. ApJ 259, 677.
Tsuboi, Y., K. Koyama, H. Murakami, et al.: 1998, 'ASCA detection of a superhot 100 million K X-ray flare on the weak-lined T Tauri star V773 Tauri'. ApJ 503, 894.
Tsuboi, Y., K. Imanishi, K. Koyama, N. Grosso, and T. Montmerle: 2000, 'Quasi-periodic X-ray flares from the protostar YLW15'. ApJ 532, 1089.
Tsuru, T., K. Makishima, T. Ohashi, et al.: 1989, 'X-ray and radio observations of flares from the RS Canum Venaticorum system UX Arietis'. PASP 41, 679.
Uchida, Y. and T. Sakurai: 1983, 'Interacting magnetospheres in RS CVn binaries — Coronal heating and flares'. In: IAU Colloq. 71: Activity in Red-Dwarf Stars. p. 629.
Ulrich, R. K.: 1975, 'Solar neutrinos and variations in the solar luminosity'. Science 190, 619.
Vaiana, G. S., A. S. Krieger, and A. F. Timothy: 1973, 'Identification and analysis of structures in the corona from X-ray photography'. Solar Physics 32, 81.
Vaiana, G. S. and R. Rosner: 1978, 'Recent advances in coronal physics'. ARA&A 16, 393.
Vaiana, G. S., G. Fabbiano, R. Giacconi, L. Golub, P. Gorenstein, F. R. Harnden, J. P. Cassinelli, B. M. Haisch, H. M. Johnson, J. L. Linsky, C. W. Maxson, R. Mewe, R. Rosner, F. Seward, K. Topka, and C. Zwaan: 1981, 'Results from an extensive Einstein stellar survey'. ApJ 244, 163.
van den Oord, G. H. J., R. Mewe, and A. C. Brinkman: 1988, 'An EXOSAT observation of an X-ray flare and quiescent emission from the RS CVn binary σ2 CrB'. A&A 205, 181.
van den Oord, G. H. J. and R. Mewe: 1989, 'The X-ray flare and the quiescent emission from Algol as detected by EXOSAT'. A&A 213, 245.
van den Oord, G. H. J., C. J. Schrijver, M. Camphens, R. Mewe, and J. S. Kaastra: 1997, 'EUV spectroscopy of cool stars. III. Interpretation of EUVE spectra in terms of quasi-static loops'. A&A 326, 1090.
Ventura, P., A. Zeppieri, I. Mazzitelli, and F. D'Antona: 1998a, 'Full spectrum of turbulence convective mixing: I. theoretical main sequences and turn-off for 0.6 — 15 M ⊙'. A&A 334, 953.
Ventura, P., A. Zeppieri, I. Mazzitelli, and F. D'Antona: 1998b, 'Pre-main sequence Lithium burning: the quest for a new structural parameter'. A&A 331, 1011.
Ventura, R., A. Maggio, and G. Peres: 1998c, 'Loop modeling of coronal X-ray spectra. V. One-and two-loop model fitting of G-type star ROSAT/PSPC spectra'. A&A 334, 188-200.
Vesecky, J. F., S. K. Antiochos, and J. H. Underwood: 1979, 'Numerical modeling of quasi-static coronal loops. I — Uniform energy input'. ApJ 233, 987.
Vilhu, O.: 1984, 'The nature of magnetic activity in lower main sequence stars'. A&A 133, 117.
Vilhu, O. and S. M. Rucinski: 1983. 'Period-activity relations in close binaries'. A&A 127, 5.
Vilhu, O., B. Gustafsson, and B. Edvardsson: 1987, 'Spectroscopy of the rapidly rotating K star HD 36705'. ApJ 320, 850.
Walter, F. M., P. A. Charles, and C. S. Bowyer: 1978, 'Discovery of quiescent X-ray emission from HR1099 and RS CVn'. Nat 274, 569.
Walter, F. M., W. Cash, P. A. Charles, and C. S. Bowyer: 1980, 'X-rays from RS Canum Venaticorum systems — A HEAO 1 survey and the development of a coronal model'. ApJ 236, 212.
Walter, F. M. and S. Bowyer: 1981, 'On the coronae of rapidly rotating stars. I — The relation between rotation and coronal activity in RS CVn systems'. ApJ 245, 671.
Walter, F. M., D. M. Gibson, and G. S. Basri: 1983, 'First observations of stellar coronal structure — The coronae of AR Lacertae'. ApJ 267, 665.
Walter, F. M., A. Brown, R. D. Mathieu, and P. C. Myers: 1988, 'X-ray sources in regions of star formation. III. Naked T Tauri stars associated with the Taurus-Auriga complex'. AJ 96, 297.
Walter, F. M. and W. T. Boyd: 1991, 'Star formation in Taurus-Auriga: the high mass stars'. ApJ 370, 318.
Wargelin, B. J. and J. J. Drake: 2002, 'Stringent X-ray constraints on loss from proxima Centauri'. ApJ 578, 503.
Weber, M. and K. G. Strassmeier: 2001, 'Doppler imaging of stellar surface structure. XV. A possible detection of differential rotation and local meridional flows on the rapidly-rotating giant HD 218153 = KU Pegasi'. A&A 373, 974.
White, N. E., R. A. Shafer, K. Horne, A. N. Parmar, and J. L. Culhane: 1990, 'X-ray eclipse mapping or AR Lacertae'. ApJ 350, 776.
White, N., K. Arnaud, C. Day, K. Ebisawa, E. Gotthelf, K. Mukai, Y. Soong, T. Yaqoob, and A. Antunes: 1994, 'An ASCA observation of one orbital cycle of AR Lac'. Publ. Astr. Soc. Japan 46, L97.
White, S. M., J. Lim, S. M. Rucinski, C. Roberts, D. Kilkenny, S. G. Ryan, P. Prado, and M. R. Kundu: 1996, 'A search for rotational modulation in the EUV emission from AB Doradus'. In: IAU Colloq. 152: Astrophysics in the Extreme Ultraviolet. p. 165.
White, S. M., R. J. Thomas, J. W. Brosius, and M. R. Kundu: 2000, 'The absolute abundance of iron in the solar corona'. ApJ 534, L203.
Widing, K. G. and U. Feldman: 2001, 'On the rate of abundance modifications versus time in active region plasmas'. ApJ 555, 426.
Winebarger, A. R., A. G. Emslie, J. T. Mariska, and H. P. Warren: 2002, 'Energetics of explosive events observed with SUMER'. ApJ 565, 1298.
Young, C. A.: 1869, 'On a new method of observing contacts at the Sun's limb and other spectroscopic observations during the recent eclipse'. The American Journal of Science and Arts XLVIII(144), 370.
Zickgraf, F. J., I. Thiering, J. Krautter, I. Appenzeller, R. Kneer, W. H. Voges, B. Ziegler, C. Chavarria, A. Serrano, R. Mujica, M. Pakull, and J. Heidt: 1997, 'Identification of a complete sample of northern ROSAT All-Sky Survey X-ray sources. II. The optical observations'. A&A 123, 103.
Zinnecker, H. and T. Preibisch: 1994, 'X-ray emission from Herbig Ae/Be stars: A ROSAT survey'. A&A 292, 152.