Astronomy and Astrophysics – Astronomy
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21011403k&link_type=abstract
American Astronomical Society Meeting 210, #114.03; Bulletin of the American Astronomical Society, Vol. 39, p.239
Astronomy and Astrophysics
Astronomy
Scientific paper
The use of X-ray luminosity functions (XLFs) as a powerful diagnostic tool has become common practice in the study of nearby galaxies. Recent work has suggested that there may be ``universal" XLFs of both high- and low-mass X-ray binaries in galaxies, the former scaling with the star-formation rate and the latter with the total stellar mass. Crucial in testing these hypotheses is disentangling the source populations through X-ray color classification, variability properties, and identification of multiwavelength counterparts. Of further importance is extending the XLFs to lower luminosities than can reasonably be obtained for most nearby galaxies in order to understand the X-ray binary population in quiescence. I present recent results from the Chandra X-ray Observatory, XMM-Newton, the Hubble Space Telescope, and the SWIFT Telescope which attempt to address these issues. I discuss the multiwavelength source population of the interacting spiral galaxy M51 and the implications these results have on common X-ray diagnostics. I also discuss the XLFs of both high- and low-mass binaries in quiescence in two local group galaxies: the Fornax dwarf spheroidal galaxy and the dwarf starburst IC 10.
Kilgard Roy E.
Prestwich Andrea H.
Ward Martin J.
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