NOAO >   Observing Info >   Approved Programs >   2005B-0340

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Proposal Information for 2005B-0340


PI: M. Virginia McSwain, Yale University, mcswain@astro.yale.edu
Address: Department of Astronomy, PO Box 208101, New Haven, CT 06520-8101, USA

CoI: Douglas R. Gies, Georgia State University
CoI: Tabetha S. Boyajian, Georgia State University

Title: Detecting Quiet Massive X-ray Binaries

Abstract: Wind accretion models of the X-ray luminosity in massive X-ray binaries (MXRBs) predict a class of ``quiet'' MXRBs in which the stellar wind is too weak to power a strong X-ray source. The first two candidates systems, HD 14633 and HD 15137, were recently detected. These O star + neutron star systems were ejected from the open cluster NGC 654, but although they both show evidence of a past supernova within the binary system, neither is a known X-ray emitter. These systems provide a new opportunity to examine the ejection mechanisms responsible for the OB runaway stars, and they can also provide key information about the evolution of spun-up, rejuvenated massive stars.


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NOAO >   Observing Info >   Approved Programs >   2005B-0340

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