X-Ray Constraints on the Binary Star Populations in Omega Centauri

Details X-Ray Constraints on the Binary Star Populations in Omega Centauri X-Ray Constraints on the Binary Star Populations in Omega Centauri

Sep 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cxo..prop..182c&link_type=abstract

Chandra Proposal ID #01300889

Computer Science

Chandra Proposal Id #01300889

Scientific paper

We propose to obtain a 70 ksec ACIS observation of the globular cluster Omega Cen. A high rate of stellar interactions and large core make Omega Cen a prime target for the study of low-luminosity cluster X-ray sources. We will (1) measure the luminosity function and radial distribution of cataclysmic variables down to Lx = 2e30 erg/s; (2) determine the frequency of RS CVn X-ray binaries in a globular cluster for the first time; (3) provide the accurate positions needed for identifying optical counterparts in crowded fields; and (4) enable detailed comparisons between clusters with different dynamical properties. An order of magnitude more sensitive than previous work, this study will provide new constraints on primordial and capture binaries that are vital to cluster dynamical evolution.

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