The X-ray source population of IC 10

Details The X-ray source population of IC 10 The X-ray source population of IC 10

Sep 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009cfdd.confe.132k&link_type=abstract

Chandra's First Decade of Discovery, Proceedings of the conference held 22-25 September, 2009 in Boston, MA. Edited by Scott Wo

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Galaxies

Scientific paper

The Local Group dwarf galaxy IC 10 is the nearest starburst to the Milky Way. Its proximity and low metallicity make it an ideal candidate for the study of high-mass X-ray binaries in quiescence. IC 10 presents an unique case for studying a complete sample of such objects, something made difficult in the Milky Way by absorption in the Galactic disc and in other galaxies by their distances.We present results from a set of Chandra/ACIS-S imaging observations of IC 10, including spectra, lightcurves, X-ray colors, and X-ray luminosity functions. The XLF is steeper than for the more luminous HMXBs observed in other galaxies, thus implying that the ``universal'' luminosity function for HMXBs does not extend below 1e36 erg/s. We also present initial results from a search for optical counterparts to the X-ray sources using archival HST/ACS observations. Approximately 10% of the sources have strong optical counterpart candidates, all of which appear to be high-mass stars.

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