SIMBAD references

2007ApJ...661.1112V - Astrophys. J., 661, 1112-1118 (2007/June-1)

LP 133-373: a new chromospherically active eclipsing dMe binary with a distant, cool white dwarf companion.

VACCARO T.R., RUDKIN M., KAWKA A., VENNES S., OSWALT T.D., SILVER I., WOOD M. and SMITH J.A.

Abstract (from CDS):

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.

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Journal keyword(s): Stars: Binaries: Eclipsing - Stars: Activity - stars: individual (LP 133-373) - stars: individual (LP 133-374) - Stars: Late-Type - Stars: White Dwarfs

Simbad objects: 3

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