Luminous Supersoft X-Ray Sources in External Galaxies

Details Luminous Supersoft X-Ray Sources in External Galaxies Luminous Supersoft X-Ray Sources in External Galaxies

Nov 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002xrb..confe...6d&link_type=abstract

X-ray Binaries in the Chandra and XMM-Newton Era (with an emphasis on Targets of Opportunity), Abstracts of the conference held

Physics

Super-Soft Sources, Dwarf Novae

Scientific paper

A total of more than 200 luminous supersoft X-ray sources (SSSs) have been discovered in the spiral galaxies M31, M101, M83, M51 NGC 300 and in the elliptical galaxies M87, NGC 4472, and NGC 4697. We have used a set of uniform criteria to select the sources, making comparisons among the galaxies possible. We will discuss our selection algorithm, which will be made public for the analysis of Chandra and XMM data, as well as the preliminary results we found by applying the algorithm to data from the galaxies mentioned above. We find several interesting trends, including indications of a large underlying SSS population in each galaxy, the existence of SSSs among young stellar populations in spirals, and a set of ultraluminous SSSs. We anticipate that the study of SSSs in external galaxies by both Chandra and XMM will play a key role in illuminating the physical natures of the sources.

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