Abstract
The POMME survey (Pixel Observations of M31 with MEgacam) monitored two fields in the disc of M31 using MegaCam at CFHT over a timespan of 2.5 months in three filters (g′,r′,i′). Covering a large fraction of the disc of M31, it yields an unprecedented view on Cepheids, eclipsing binaries and microlensing events in M31. In this contribution we present the first results on the Cepheid populations in M31. Using difference imaging we detect more than 2500 Cepheids in the period range from 2 to 80 days, making the catalogue the largest and most homogeneous database of M31 Cepheids to date. The period distribution peaks at logP[day]≈0.63. We confirm the presence of a second peak in the period distribution at logP[day]≈1.13, consistent with previous findings on smaller samples, and which is also present in Galactic Cepheids, unlike those at the lower metallicities of the LMC. Using the Fourier parameters derived from light curve fitting we identify 200 first overtone pulsators among the POMME Cepheids. On-going work will include the derivation of period-luminosity relations and the extension of the analysis to eclipsing binary systems, yielding an improved distance to M31 and tighter constraints on systematics affecting the period-colour-metallicity-luminosity relations.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Alcock, C., Allsman, R.A., Alves, D., et al.: Astrophys. J. 511, 185 (1999)
An, J.H., Evans, N.W., Hewett, P., et al.: Mon. Not. R. Astron. Soc. 351, 1071 (2004)
Ansari, R., Aurière, M., Baillon, P., et al.: Astron. Astrophys. 421, 509 (2004)
Antonello, E.: Astron. Astrophys. 285, 140 (1994)
Antonello, E., Fugazza, D., Mantegazza, L.: Astron. Astrophys. 388, 477 (2002)
Baade, W., Swope, H.H.: Astron. J. 68, 435 (1963)
Barmby, P., Ashby, M.L.N., Bianchi, L., et al.: Astrophys. J. Lett. 650, L45 (2006)
Beaulieu, J.P., Grison, P., Tobin, W., et al.: Astron. Astrophys. 303, 137 (1995)
Becker, S.A., Iben, I. Jr., Tuggle, R.S.: Astrophys. J. 218, 633 (1977)
Bertin, E.: In: Gabriel, C., Arviset, C., Ponz, D., Enrique, S. (eds.) Astronomical Data Analysis Software and Systems XV. Astronomical Society of the Pacific Conference Series, vol. 351, p. 112 (2006)
Bertin, E., Mellier, Y., Radovich, M., et al.: In: Bohlender, D.A., Durand, D., Handley, T.H. (eds.) Astronomical Data Analysis Software and Systems XI. Astronomical Society of the Pacific Conference Series, vol. 281, p. 228 (2002)
Block, D.L., Bournaud, F., Combes, F., et al.: Nature 443, 832 (2006)
Fliri, J., Riffeser, A., Seitz, S., Bender, R.: Astron. Astrophys. 445, 423 (2006)
Fliri, J., Valls-Gabaud, D., Magnier, E.A.: To be submitted (2012)
Freedman, W.L., Madore, B.F.: Astrophys. J. 365, 186 (1990)
Gordon, K.D., Bailin, J., Engelbracht, C.W., et al.: Astrophys. J. Lett. 638, L87 (2006)
Hertzsprung, E.: Bull. Astron. Inst. Neth. 3, 115 (1926)
Hodge, P.: The Andromeda Galaxy. Springer, Heidelberg (1992)
Hubble, E.P.: Astrophys. J. 69, 103 (1929)
Joshi, Y.C., Narasimha, D., Pandey, A.K., Sagar, R.: Astron. Astrophys. 512, 66 (2010)
Joshi, Y.C., Pandey, A.K., Narasimha, D., Sagar, R., Giraud-Héraud, Y.: Astron. Astrophys. 402, 113 (2003)
Kaluzny, J., Stanek, K.Z., Krockenberger, M., et al.: Astron. J. 115, 1016 (1998)
Kang, Y., Bianchi, L., Rey, S.-C.: Astrophys. J. 703, 614 (2009)
Lee, C.-H., Riffeser, A., Koppenhoefer, J., et al.: Astron. J. 143, 89 (2012)
Lomb, N.R.: Astrophys. Space Sci. 39, 447 (1976)
Macri, L.M.: In: Kurtz, D.W., Pollard, K.R. (eds.) IAU Colloq., 193: Variable Stars in the Local Group. Astronomical Society of the Pacific Conference Series, vol. 310, p. 33 (2004)
Magnier, E.A., Augusteijn, T., Prins, S., van Paradijs, J., Lewin, W.H.G.: Astron. Astrophys. Suppl. Ser. 126, 401 (1997)
Montalto, M., Seitz, S., Riffeser, A., et al.: Astron. Astrophys. 507, 283 (2009)
Mould, J., Saha, A., Hughes, S.: Astrophys. J. Suppl. Ser. 154, 623 (2004)
Nedialkov, P.L., Ivanov, V.D.: Astron. Astrophys. Trans. 17, 367 (1999)
Palmer, D.M.: Astrophys. J. 695, 496 (2009)
Riess, A.G., Fliri, J., Valls-Gabaud, D.: Astrophys. J. 745, 156 (2012)
Rodriguez-Fernandez, N.J., Braine, J., Brouillet, N., Combes, F.: Astron. Astrophys. 453, 77 (2006)
Samus, N.N., Goranskii, V.P., Durlevich, O.V., et al.: Astron. Lett. 29, 468 (2003)
Scargle, J.D.: Astrophys. J. 263, 835 (1982)
Simon, N.R., Lee, A.S.: Astrophys. J. 248, 291 (1981)
Simon, N.R., Moffett, T.J.: Publ. Astron. Soc. Pac. 97, 1078 (1985)
Soszyński, I., Poleski, R., Udalski, A., et al.: Acta Astron. 58, 163 (2008)
Stellingwerf, R.F.: Astrophys. J. 224, 953 (1978)
Stetson, P.B.: Publ. Astron. Soc. Pac. 99, 191 (1987)
Tabatabaei, F.S., Berkhuijsen, E.M.: Astron. Astrophys. 517, A77 (2010)
Tempel, E., Tamm, A., Tenjes, P.: Astron. Astrophys. 509, A91 (2010)
Vilardell, F., Jordi, C., Ribas, I.: Astron. Astrophys. 473, 847 (2007)
Vilardell, F., Ribas, I., Jordi, C.: Astron. Astrophys. 459, 321 (2006)
Welch, D.L., Madore, B.F., McAlary, C.W., McLaren, R.A.: Astrophys. J. 305, 583 (1986)
Williams, B.F.: Astron. J. 126, 1312 (2003)
Wozniak, P.R.: Acta Astron. 50, 421 (2000)
Acknowledgements
Financial support for this work was provided in part by the POMMME project (ANR 09-BLAN-0228). This work is also based on observations obtained with MegaPrime/MegaCam, a joint project of CFHT and CEA/DAPNIA, at the CFHT which is operated by the National Research Council (NRC) of Canada, the Institut National des Sciences de l’Univers of the Centre National de la Recherche Scientifique (CNRS) of France, and the University of Hawaii.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Fliri, J., Valls-Gabaud, D. First results from the POMME survey of M31. Astrophys Space Sci 341, 57–64 (2012). https://doi.org/10.1007/s10509-012-1079-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10509-012-1079-5