Ultraluminous X-ray Sources in Interacting Galaxies

Details Ultraluminous X-ray Sources in Interacting Galaxies Ultraluminous X-ray Sources in Interacting Galaxies

2009-08-17

arxiv.org/abs/0908.2459v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

5 pages to appear in the Proceedings of the Galaxy Wars: Stellar Populations and Star Formation in Interacting Galaxies Confer

Scientific paper

I give a brief review of how X-rays from nearby galaxies are used as direct tracers of recent star formation. This leads to the conclusion that it is the most luminous point-like sources that are associated with star formation and that the majority of these are high-mass X-ray binaries.I then discuss a recent study that shows that ULXs are preferentially found in regions as young as or younger than typical HII regions in their host galaxies. Finally, I describe a new study that attempts to determine the maximum luminosity of ULXs in the local universe by searching for them in interacting galaxies where the star formation rate is high.

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