Using the Sculptor Dwarf Spheroidal Galaxy to Constrain X-ray Binary Production in Population II

Details Using the Sculptor Dwarf Spheroidal Galaxy to Constrain X-ray Binary Production in Population II Using the Sculptor Dwarf Spheroidal Galaxy to Constrain X-ray Binary Production in Population II

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cxo..prop.1486m&link_type=abstract

Chandra Proposal ID #05600489

Physics

Chandra Proposal Id #05600489

Scientific paper

We propose monitoring of the Sculptor dwarf spheroidal galaxy with 21 6-kilosecond images to measure its x-ray binary content, both quiescent and outbursting, and 20 minute optical/IR images from ANDICAM every ~2 weeks. These data will provide an ideal control sample for studying the formation efficiency of x-ray binaries in Population II - a large sample of stars without recent star formation or globular clusters. Detected x-ray binaries would then have to be low duty cycle transient systems. A null result would provide strong evidence that a substantial fraction of the field sources of ellipticals are made in globular clusters, while a detection of ~20 quiescent sources would indicate that the bulk of the field sources are likely to be very low duty cycle transients.

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