Other
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008noao.prop..574m&link_type=abstract
NOAO Proposal ID #2008A-0574
Other
Scientific paper
In the 2007A semester we performed spectroscopic follow-up of a large sample of Chandra X-ray sources having bright NIR counterparts. This resulted in the discovery of a 13 new colliding-wind Wolf-Rayet/O X- ray binaries in the GCR. These binaries are likely to have relatively small physical separations to account for the hard X-ray emission of their colliding winds. Such close massive binaries are will have short periods making them prime candidates for short-term variability. Several of our sources also show evidence of binarity in the IR spectra: one source is a double-lined binary of O supergiants, and another the is star that completely changed spectral type over a two-day period from a late carbon-type WC star to an O supergiant, suggesting this to be an eclipsing system. Radial velocity monitoring will determine orbital periods and mass ratios of the components. If the close binaries exhibit at least a partial eclipse, which is not unlikely for close supergiants, we will derive accurate orbital parameters for the system. This study will constrain untested models of massive star formation and evolution, winds and mass loss, and binary evolution.
Mauerhan Jon
Morris Mark
Muno Michael
No associations
LandOfFree
Photometric and Spectroscopic Monitoring of of Colliding-Wind X-ray Binaries in the Galactic Center does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Photometric and Spectroscopic Monitoring of of Colliding-Wind X-ray Binaries in the Galactic Center, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photometric and Spectroscopic Monitoring of of Colliding-Wind X-ray Binaries in the Galactic Center will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1528877