NOAO >   Observing Info >   Approved Programs >   2010A-0384

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Proposal Information for 2010A-0384


PI: Jon Mauerhan, IPAC / SSC, mauerhan@ipac.caltech.edu
Address: 1200 E. California Blvd. M/C 220-6, Pasadena, California 91125, USA

CoI: Schuyler Van Dyk, IPAC / SSC
CoI: Pat Morris, IPAC / HSC

Title: Obscured Massive Stellar X-ray Sources in the Galactic Plane

Abstract: Massive binaries (colliding-wind binaries and high-mass X-ray binaries) provide insight into the birth, evolution and death of massive stars; the physics of supersonic wind-collision and accretion; and the physics of ultra-dense matter (neutron stars and black holes). We have cross-correlated ~20,000 X-ray sources from the \textitChandra and \textitXMM catalogs of the Galactic plane with a sample of candidate massive stars from the 2MASS+\textitSpitzer/GLIMPSE catalog; 54 highly reddened sources have emerged from our cross-correlation, 30 of which lie at southern declinations. We propose to use SOAR/OSIRIS to determine the spectral types of these stars, so we can determine the origin of the high-energy emission, and evolutionary status of these objects. Once confirmed, new massive X-ray binaries will become targets for future multi-wavelength observations to determine their orbital periods and system mass-functions.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2010A-0384

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