Hostname: page-component-7bb8b95d7b-495rp Total loading time: 0 Render date: 2024-09-11T09:41:11.303Z Has data issue: false hasContentIssue false

Orbital Elements of MACHO Project Eclipsing Binary Stars

Published online by Cambridge University Press:  30 March 2016

Charles Alcock*
Affiliation:
Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19104, USA

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Large scale photometric surveys can deliver very large numbers of eclipsing binary stars. It is not presently possible to obtain radial velocity information for more than a small fraction of these. We have made some progress in the estimation of the statistical distributions of orbital elements (including semi-major axis and eccentricity) in the MACHO Project catalog of eclipsing binary stars. We see the well-known tendency to circularization in short period orbits and also detect late tidal circularization during the giant phase. The extension of these techniques to newer surveys will also be discussed.

Type
I. Joint Discussions
Copyright
Copyright © Astronomical Society of Pacific 2005