Astronomy and Astrophysics – Astrophysics
Scientific paper
2007-11-23
Astronomy and Astrophysics
Astrophysics
5 pages, 5 figures, to be published in the proceedings of the ESAC workshop "X-rays from Nearby Galaxies"
Scientific paper
The deep homogeneous survey of the large Local-Group spiral galaxy M 31 is a milestone project for X-ray astronomy, as it allows a detailed X-ray inventory of an archetypal low-star-formation-rate galaxy like our own. We present first results of the deep XMM-Newton survey, which covers the entire D 25 ellipse. Information from different X-ray energy bands are combined in an X-ray colour image of M 31. In the first 15 observations we found about 1000 sources, the full survey will yield about 2000 X-ray sources. Sources will be classified using hardness ratios, extent, high quality spectra and time variability. In addition the sources will be correlated with catalogues in optical, infra-red and radio wavelengths. Our goal is to study M 31 X-ray binaries and globular cluster sources, supersoft sources, supernova remnants and the hot interstellar medium and separate them from foreground stars and background objects.
Haberl Franck
Pietsch Wolfgang
program collaboration for the XMM-Newton M. 31 large
Stiele Holger
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