AAS 200th meeting, Albuquerque, NM, June 2002
Session 84. High Energy Processes in Normal Galaxies: A Multi-wavelength Look
Special Session Oral, Thursday, June 6, 2002, 2:00-3:30pm, Ballroom C

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[84.06] X-ray source populations in the Andromeda Galaxy: first results from XMM-Newton survey

S. P. Trudolyubov, W. C. Priedhorsky, K. N. Borozdin, R. Shirey (Los Alamos National Laboratory, USA), K. O. Mason (Mullard Space Science Laboratory, UK), F. A. Cordova (University of California, Santa Barbara, USA), J. P. Osborne, M. G. Watson (University of Leicester, UK)

We present the results from XMM-Newton survey of the Andromeda Galaxy (M31). We discovered more than a hundred of new X-ray sources; some of them appeared to be bright X-ray transients. The unprecedented sensitivity of XMM-Newton allowed a detailed study of spectral properties and variability of new and previously known X-ray sources with luminosities above ~5 x 1036 ergs s-1. We review the X-ray properties of various classes of objects (X-ray transients, globular cluster sources, supernova remnants (SNR) and supersoft sources) detected in our survey. We present X-ray source luminosity distributions in the bulge and disk regions of M31. The disk in general is clearly lacking the brighter sources which dominate X-ray emission from the bulge. This is the first convincing evidence for a difference between bulge and disk X-ray populations in M31. Our results are in good qualitative agreement with the luminosity distributions for low- and high-mass X-ray binaries in our Galaxy.

The author(s) of this abstract have provided an email address for comments about the abstract: tsp@nis.lanl.gov

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.