A Complete Sample of ULX Host Galaxies

Astronomy and Astrophysics – Astronomy

Scientific paper

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Chandra Proposal Id #07620651

Scientific paper

We propose a statistical study of ULXs in a complete sample of nearby galaxies to obtain the population census of ULX candidates, their precise astrometric positions, and estimates of their X-ray colors and luminosities. We propose snapshot observations (<5 ks) of 55 galaxies and will combine this with an additional 85 galaxies already observed to form a large, well-defined, and minimally-biased sample of galaxies. This will allow us to accurately determine the spatial distributions of ULXs within their host galaxies, search for statistical correlations between the frequency of ULXs and global properties and local features of their host galaxies, and to compare ULX rates to those predicted by population synthesis models.

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