The link between X-ray source and stellar populations in M81

Details The link between X-ray source and stellar populations in M81 The link between X-ray source and stellar populations in M81

Jul 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005hst..prop10584z&link_type=abstract

HST Proposal ID #10584

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Hst Proposal Id #10584 Galaxies

Scientific paper

We propose to perform a deep v 26-27.0 HST-ACS survey of the nearby {3.6 Mpc} spiral galaxy M 81 in order to study the nature of its X-ray source populations detected with Chandra. For the first time in a galaxy other than the Milky-Way or the Magelanic Clouds, we will classify X-ray sources as High-Mass and Low-Mass X-ray binaries {HMXBs, LMXBs} and investigate how these populations depend on their galactic environment. The classification will be performed {a} by finding and classifying unique optical counterparts for the X-ray sources and {b} studying the stellar populations in their vicinity. Both tasks require the <0.1'' resolution of HST-ACS which matches well the positional accuracy of Chandra. Finally we will use these results together with X-ray binary evolution synthesis models in order to constrain X-ray binary {XRB} evolution channels. These data will also be a great resource for studies of the star-formation and star-cluster populations in one of the prototypical spiral galaxies.

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