Physics
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000noao.prop...36w&link_type=abstract
NOAO Proposal ID #2000A-0036
Physics
Scientific paper
The orbital period is the fundamental parameter in the characterization of any binary system. It establishes the system's geometrical scale and is required prior to the detailed investigation of its physical properties. In addition, the orbital period distribution for a class of objects can provide unique insight into the evolution of the population as a whole. We propose a systematic effort to determine the orbital period distribution of low mass X-ray binaries (LMXBs). LMXBs are systems in which matter donated by a low mass star is accreted by a neutron star or black hole. The comparison between the predictions of population synthesis models and the observed LMXB orbital period distribution can place constraints on various physical processes, such as supernova kick velocities, common envelope evolution, X-ray irradiation physics, etc. These models make their strongest predictions based on the short and long period tails of the observed distribution, where the number of systems is greatly affected by observational bias. Our observations will concentrate on systems with likely periods at these extremes and also obtain simultaneous X-ray observations.
Bandyopadhyay Reba M.
Hoard Donald Wayne
Smale Alan P.
Wachter Stefanie
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