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The Globular Cluster System of NGC 5128: Ages, Metallicities, Kinematics and Structural Parameters

Published online by Cambridge University Press:  02 January 2013

K. A. Woodley  and
M. Gómez
K. A. Woodley*
Affiliation:
Department of Physics & Astronomy, McMaster University, Hamilton ON, L8S 4M1, Canada Department of Physics & Astronomy, University of British Columbia, Vancouver BC, V6T 1Z1, Canada
M. Gómez
Affiliation:
Departamento de Ciencias Fisicas, Facultad de Ingenieria, Universidad Andres Bello, Chile
*
DCorresponding author. Email: kwoodley@phas.ubc.ca
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Abstract

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We review our recent studies of the globular cluster system of NGC 5128. First, we have obtained low-resolution, high signal-to-noise spectroscopy of 72 globular clusters using Gemini-S/GMOS to obtain the ages, metallicities, and the level of alpha enrichment of the metal-poor and metal-rich globular cluster subpopulations. Second, we have explored the rotational signature and velocity dispersion of the galaxy's halo using over 560 globular clusters with radial velocity measurements. We have also compared the dependence of these properties on galactocentric distance and globular cluster age and metallicity. Using globular clusters as tracer objects, we have analyzed the mass, and mass-to-light ratio of NGC 5128. Last, we have measured the structural parameters, such as half-light radii, of over 570 globular clusters from a superb 1.2-square-degree Magellan/IMACS image. We will present the findings of these studies and discuss the connection to the formation and evolution of NGC 5128.

Keywords

galaxies: elliptical and lenticular, cDgalaxies: evolutiongalaxies: individual (NGC 5128)galaxies: star clustersglobular clusters: general
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 27 , Special Issue 4: The Many Faces of Centaurus A , 2010 , pp. 379 - 389
Copyright
Copyright © Astronomical Society of Australia 2010

References

Aarseth, S. J. & Heggie, D. C., 1998, MNRAS, 297, 794CrossRefGoogle Scholar
Barmby, P., Holland, S. & Huchra, J. P., 2002, AJ, 123, 1937CrossRefGoogle Scholar
Beasley, M. A., Bridges, T., Peng, E., Harris, W. E., Harris, G. L. H., Forbes, D. A. & Mackie, G., 2008, MNRAS, 386, 1443CrossRefGoogle Scholar
Bekki, K., Beasley, M. A., Brodie, J. P. & Forbes, D. A., 2005, MNRAS, 363, 1211CrossRefGoogle Scholar
Bergond, G., Zepf, S. E., Romanowsky, A. J., Sharples, R. M. & Rhode, K. L., 2006, A&A, 448, 155Google Scholar
Bridges, T., Gebhardt, K., Sharples, R., Faifer, F. R., Forte, J. C., Beasley, M. A., Zepf, S. E., Forbes, D. A., Hanes, D. A. & Pierce, M., 2006, MNRAS, 373, 157CrossRefGoogle Scholar
Burstein, D., Faber, S. M., Gaskell, C. M. & Krumm, N., 1984, ApJ, 287, 586CrossRefGoogle Scholar
Carlson, M. N. et al. , 1998, AJ, 115, 1778CrossRefGoogle Scholar
Chien, L.-H., Barnes, J. E., Kewley, L. J. & Chambers, K. C., 2007, ApJ, 660, 105CrossRefGoogle Scholar
Côté, P. et al. , 2001, ApJ, 559, 828CrossRefGoogle Scholar
Côté, P., McLaughlin, D. E., Cohen, J. G. & Blakeslee, J. P., 2003, ApJ, 591, 850CrossRefGoogle Scholar
Dekel, A., Stoehr, F., Mamon, G. A., Cox, T. J., Novak, G. S. & Primack, J. R., 2005, Natur, 437, 707CrossRefGoogle Scholar
Dufour, R. J., Harvel, C. A., Martins, D. M., Schiffer, F. H. III, Talent, D. L., Wells, D. C., van den Bergh, S. & Talbot, R. J. Jr., 1979, AJ, 84, 284CrossRefGoogle Scholar
Evans, N. W., Wilkinson, M. I., Perrett, K. M. & Bridges, T. J., 2003, ApJ, 583, 752CrossRefGoogle Scholar
Georgiev, I.Y., Goudfrooij, P., Puzia, T. H. & Hilker, M., 2008, AJ, 135, 1858CrossRefGoogle Scholar
Georgiev, I. Y., Puzia, T. H., Hilker, M. & Goudfrooij, P., 2009, MNRAS, 392, 879CrossRefGoogle Scholar
Goméz, M. & Woodley, K. A., 2007, ApJ, 670, L105CrossRefGoogle Scholar
Groudfrooij, P., Schweizer, F., Gilmore, D. & Whitmore, B. C., 2007, AJ, 133, 2737CrossRefGoogle Scholar
Harris, G. L. H., Geisler, D., Harris, H. C. & Hesser, J. E., 1992, AJ, 104, 613CrossRefGoogle Scholar
Harris, W. E. & Harris, G. L. H., 2002, AJ, 123, 3108CrossRefGoogle Scholar
Harris, G. L. H., Harris, W. E., & Geisler, D. 2004, AJ, 128, 723CrossRefGoogle Scholar
Harris, W. E., Harris, G. L. H., Barmby, P., McLaughlin, D. E. & Forbes, D. A., 2006, AJ, 132, 2187CrossRefGoogle Scholar
Harris, W. E., 2009, ApJ, 699, 254CrossRefGoogle Scholar
Hesser, J. E., Harris, H. C., van den Bergh, S. & Harris, G. L. H., 1984, ApJ, 276, 491CrossRefGoogle Scholar
Hesser, J. E., Harris, H. C., & Harris, G. L. H., 1986, ApJL, 303, 51CrossRefGoogle Scholar
Holtzman, J. A. et al. , 1992, AJ, 103, 691CrossRefGoogle Scholar
Hui, X., Ford, H. C., Freeman, K. C. & Dopita, M. A., 1995, ApJ, 449, 592CrossRefGoogle Scholar
Hwang, H. S. et al. , 2008, ApJ, 674, 869CrossRefGoogle Scholar
Jordán, A. et al. , 2005, ApJ, 634, 1002CrossRefGoogle Scholar
Karachentsev, I. D. et al. , 2002, A&A, 385, 21Google Scholar
King, I. R., 1962, AJ, 67, 471CrossRefGoogle Scholar
Kissler-Patig, M., Brodie, J. P., Schroder, L. L., Forbes, D. A., Grillmair, C. J. & Huchra, J. P., 1998, AJ, 115, 105CrossRefGoogle Scholar
Kundu, A. & Whitmore, B. C., 1998, AJ, 116, 2841CrossRefGoogle Scholar
Kundu, A. & Whitmore, B. C., 2001, AJ, 121, 2950CrossRefGoogle Scholar
Kundu, A., Whitmore, B. C., Sparks, W. B., Macchetto, R. D., Zepf, S. E. & Ashman, K. M., 1999, ApJ, 513, 733CrossRefGoogle Scholar
Larsen, S. S., 1999, A&ApS, 139, 393Google Scholar
Larsen, S. S., 2001, AJ, 122, 1782CrossRefGoogle Scholar
Larsen, S. S. & Brodie, J. P., 2003, ApJ, 593, 340CrossRefGoogle Scholar
Larsen, S. S., Brodie, J. P., Huchra, J. P., Forbes, D. A. & Grillmair, C. J., 2001a, AJ, 121, 2974CrossRefGoogle Scholar
Larsen, S. S., Forbes, D. A. & Brodie, J. P., 2001b, MNRAS, 327, 1116CrossRefGoogle Scholar
Miller, B. W., Whitmore, B. C., Schweizer, F. & Fall, S. M., 1997, AJ, 114, 2381CrossRefGoogle Scholar
Peng, E. W., Ford, H. C. & Freeman, K. C., 2004a, 602, 685CrossRefGoogle Scholar
Peng, E. W., Ford, H. C. & Freeman, K. C., 2004b, ApJ, 602, 705CrossRefGoogle Scholar
Peng, E. W. et al. , 2006, ApJ, 639, 95CrossRefGoogle Scholar
Pierce, M. et al. , 2006, MNRAS, 366, 1253CrossRefGoogle Scholar
Puzia, T. H., Kissler-Patig, M., Brodie, J. P. & Huchra, J. P., 1999, AJ, 118, 2734CrossRefGoogle Scholar
Puzia, T. H., Zepf, S. E., Kissler-Patig, M., Hilker, M., Minniti, D. & Goudfrooij, P., 2002, A&A, 391, 453Google Scholar
Reed, L. G., Harris, G. L. H. & Harris, W. E., 1994, AJ, 107, 555CrossRefGoogle Scholar
Rejkuba, M., Greggio, L., Harris, W. E., Harris, G. L. H. & Peng, E. W., 2005, 631, 262CrossRefGoogle Scholar
Rejkuba, M., Dubath, P., Minniti, D. & Meylan, G., 2007, A&A, 469, 147Google Scholar
Richtler, T. et al. , 2004, AJ, 127, 2094CrossRefGoogle Scholar
Schiminovich, D., van Gorkom, J. H., van der Hulst, J. M. & Kasow, S., 1994, ApJ, 423, L101CrossRefGoogle Scholar
Schweizer, F. & Seitzer, P., 1993, ApJ, 417, L29CrossRefGoogle Scholar
Schweizer, F., Miller, B. W., Whitmore, B. C. & Fall, S. M., 1996, AJ, 112, 1839CrossRefGoogle Scholar
Schiavon, R. P., Rose, J. A., Courteau, S. & MacArthur, L. A., 2005, ApJS, 160, 163CrossRefGoogle Scholar
Schuberth, Y., Richtler, T., Dirsch, B., Hilker, M., Larsen, S. S., Kissler-Patig, M. & Mebold, U., 2006, A&A, 459, 391Google Scholar
Schweizer, F. & Seitzer, P., 1998, AJ, 116, 2206CrossRefGoogle Scholar
Spitler, L. R., Larsen, S. S., Strader, J., Brodie, J. P., Forbes, D. A. & Beasley, M. A., 2006, AJ, 132, 1593CrossRefGoogle Scholar
Spitzer, L. J. & Thuan, T. X., 1972, ApJ, 175, 31CrossRefGoogle Scholar
Thomas, D., Maraston, C. & Bender, R., 2003, MNRAS, 339, 897CrossRefGoogle Scholar
Thomas, D., Maraston, C. & Korn, A., 2004, MNRAS, 351, L19CrossRefGoogle Scholar
Trager, S. C., Worthey, G., Faber, S. M., Burstein, D. & Gonzalez, J. J., 1998, ApJS, 116, 1CrossRefGoogle Scholar
Trancho, G., Bastian, N., Miller, B. W. & Schweizer, F., 2007, ApJ, 664, 284CrossRefGoogle Scholar
White, S. D. M. & Rees, M. J. 1978, MNRAS, 183, 341CrossRefGoogle Scholar
van den Bergh, S., Hesser, J. E. & Harris, G. L. H., 1981, AJ, 86, 24CrossRefGoogle Scholar
van den Bergh, S., Morbey, C. & Pazder, J., 1991, ApJ, 375, 594CrossRefGoogle Scholar
West, M. J., Cótê, P., Marzke, R. O. & Jordá, A., 2004, Natur, 427, 31CrossRefGoogle Scholar
Whitmore, B. C., Schweizer, F., Leitherer, C., Borne, K. & Robert, C., 1993, AJ, 106, 1354CrossRefGoogle Scholar
Whitmore, B. C. & Schweizer, F., 1995, AJ, 109, 960CrossRefGoogle Scholar
Whitmore, B. C., Zhang, Q., Leitherer, C., Fall, S. M., Schweizer, F. & Miller, B. W., 1999, AJ, 118, 1551CrossRefGoogle Scholar
Woodley, K. A., Harris, W. E. & Harris, G. L. H., 2005, AJ, 129, 2654CrossRefGoogle Scholar
Woodley, K. A., Harris, W. E., Beasley, M. A., Peng, E. W., Bridges, T. J., Forbes, D. A. & Harris, G. L. H., 2007, 134, 494CrossRefGoogle Scholar
Woodley, K. A., Harris, W. E., Puzia, T. H., Gómez, M., Harris, G. L. H. & Geisler, D., 2010, ApJ, 708, 1335CrossRefGoogle Scholar
Woodley, K. A., Harris, W. E., Gómez, M., Geisler, D. & Harris, G. L. H., 2009, AJ, submittedGoogle Scholar
Worthey, G. & Ottaviani, D. L., 1997, ApJS, 111, 377CrossRefGoogle Scholar
Worthey, G., Faber, S. M., Gonzalez, J. J. & Burstein, D., 1994, ApJS, 94, 687CrossRefGoogle Scholar
Zepf, S. E., Carter, D., Sharples, R. M. & Ashman, K., 1995, ApJ, 445, L19CrossRefGoogle Scholar
Zepf, S. E., Ashman, K. M., English, J., Freeman, K. C. & Sharples, R. M., 1999, AJ, 118, 752CrossRefGoogle Scholar