2008ApJ...684..635B -
Astrophys. J., 684, 635-643 (2008/September-1)
A new low-mass eclipsing binary from SDSS-II.
BLAKE C.H., TORRES G., BLOOM J.S. and GAUDI B.S.
Abstract (from CDS):
We present observations of a new low-mass, double-lined eclipsing binary system discovered using repeat observations of the celestial equator from the Sloan Digital Sky Survey II. Using near-infrared photometry and optical spectroscopy we have measured the properties of this short-period [P=0.407037(14) days] system and its two components. We find the following parameters for the two components: M1=0.272±0.020 M☉, R1=0.268±0.010 R☉, M2=0.240±0.022 M☉, R2=0.248±0.0090 R☉, T1=3320±130 K, and T2=3300±130 K. The masses and radii of the two components of this system agree well with theoretical expectations based on models of low-mass stars, within the admittedly large errors. Future synoptic surveys like Pan-STARRS and LSST will produce a wealth of information about low-mass eclipsing systems and should make it possible, with an increased reliance on follow-up observations, to detect many systems with low-mass and substellar companions. With the large numbers of objects for which these surveys will produce high-quality photometry, we suggest that it becomes possible to identify such systems even with sparse time sampling and a relatively small number of individual observations.
Abstract Copyright:
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Journal keyword(s):
Stars: Binaries: Eclipsing - Stars: Low-Mass, Brown Dwarfs
VizieR on-line data:
<Available at CDS (J/ApJ/684/635): table2.dat>
Nomenclature:
NAME SDSS-MEB-1 N=1.
CDS comments:
Eclipsing binary in the title is NAME SDSS-MEB-1
Simbad objects:
3
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