A New Detached M Dwarf Eclipsing Binary

Bibcode
2005ApJ...625L.127C
DOI
10.1086/431278
Creevey, O. L.; Benedict, G. F.; Brown, T. M.; Alonso, R.; Cargile, P.; Mandushev, G.; Charbonneau, D.; McArthur, B. E.; Cochran, W.; O'Donovan, F. T.; Jiménez-Reyes, S. J.; Belmonte, J. A.; Kolinski, D.
Bibliographical reference

The Astrophysical Journal, Volume 625, Issue 2, pp. L127-L130.

Advertised on:
6
2005
Journal
The Astrophysical Journal
Number of authors
13
IAC number of authors
4
Citations
55
Refereed citations
45
Description
We describe a newly discovered detached M dwarf eclipsing binary system. This system was first observed by the TrES network during a long-term photometry campaign of 54 nights. Analysis of the folded light curve indicates two very similar components orbiting each other with a period of 1.12079 +/- 0.00001 days. Spectroscopic observations with the Hobby-Eberly Telescope show the system to consist of two M3e dwarfs in a near-circular orbit. Double-line radial velocity amplitudes, combined with the orbital inclination derived from light-curve fitting, yield Mtotal = 0.983 +/- 0.007 Msolar, with component masses of M1=0.493+/-0.003 Msolar and M2=0.489+/-0.003 Msolar. The light-curve fit yields component radii of R1=0.453+/-0.060 Rsolar and R2=0.452+/-0.050 Rsolar. Although a precise parallax is lacking, broadband VJHK colors and spectral typing suggest component absolute magnitudes of MV(1)=11.18+/-0.30 and MV(2)=11.28+/-0.30.
Type
Refereed

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