High-resolution X-ray observations of the central region of M31 with the ROSAT satellite

Details High-resolution X-ray observations of the central region of M31 with the ROSAT satellite High-resolution X-ray observations of the central region of M31 with the ROSAT satellite

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...410..615p&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 410, no. 2, p. 615-625.

Astronomy and Astrophysics

Astronomy

99

Andromeda Galaxy, Galactic Nuclei, Rosat Mission, Spaceborne Astronomy, X Ray Astronomy, X Ray Sources, Diffuse Radiation, Emission Spectra, Galactic Bulge, Point Sources, Spatial Distribution, Supernova Remnants

Scientific paper

A 48,000-sec observation of M31's central 34 arcmin, using the Rosat HRI, has led to the detection of 86 X-ray sources with luminosities above 1.4 x 10 exp 36 ergs/sec; of these, 18 sources are identified with globular clusters and two with SNRs. An extrapolation of the cumulative luminosity distribution to fainter luminosities indicates that only about 15-26 percent of the diffuse X-ray emission in the bulge is attributable to faint unresolved sources from this distribution. The spatial distribution and number density of X-ray sources in M31 appear to be very different from those of our Galaxy.

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