Article
LP133-373 A New Chromospherically Active Eclipsing dMe Binary with a Distant, Cool White Dwarf Companion
The Astrophysical journal
Submitting Campus
Daytona Beach
Department
Physical Sciences
Document Type
Article
Publication/Presentation Date
6-1-2007
Disciplines
Abstract/Description
We report the discovery of the partially eclipsing binary LP 133-373. Nearly identical eclipses along with observed photometric colors and spectroscopy indicate that it is a pair of chromospherically active dM4 stars in a circular 1.6 day orbit. Light and velocity curve modeling to our differential photometry and velocity data show that each star has a mass and radius of 0.340 ± 0.014 M☉ and 0.33 ± 0.02 R☉. The binary is itself part of a common proper motion pair with LP 133-374, a cool DC or possible DA white dwarf with a mass of 0.49-0.82 M☉, which would make the system at least 3 Gyr old.
DOI
https://doi.org/10.1086/517872
Publisher
The Institute of Physics
Grant or Award Name
NSF grant AST-0206115, NSF grant AST-0097616
Citation Information
T. R. Vaccaro, T. D. Oswalt, M. Rudkin, Adela Kawka, et al.. "LP133-373 A New Chromospherically Active Eclipsing dMe Binary with a Distant, Cool White Dwarf Companion" The Astrophysical journal Vol. 661 Iss. 2 (2007) p. 112 - 118 Available at: http://works.bepress.com/terry_d_oswalt/91/
Dr. Oswalt was not affiliated with Embry-Riddle Aeronautical University at the time this paper was published.