LP133-373 A New Chromospherically Active Eclipsing dMe Binary with a Distant, Cool White Dwarf Companion

T. R. Vaccaro; T. D. Oswalt; M. Rudkin; Adela Kawka; Stephane Vennes; null Et al.

doi:10.1086/517872

LP133-373 A New Chromospherically Active Eclipsing dMe Binary with a Distant, Cool White Dwarf Companion

T. R. Vaccaro, T. D. Oswalt, M. Rudkin, Adela Kawka, Stephane Vennes, Et al.

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	American English
Journal	The Astrophysical Journal
Volume	661
DOIs	https://doi.org/10.1086/517872
State	Published - Jun 1 2007
Externally published	Yes

Keywords

binaries: eclipsing
stars: activity
stars: individual (LP 133-373
LP 133-374)
stars: late-type
white dwarfs

Disciplines

Stars, Interstellar Medium and the Galaxy

Access to Document

10.1086/517872License: CC BY

LP133-373 A New Chromospherically Active Eclipsing dMe Binary witFinal published version, 770 KBLicense: CC BY
LP 133-373: A New Chromospherically Active Eclipsing dMe Binary wFinal published version, 783 KBLicense: CC BY

Cite this

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title = "LP133-373 A New Chromospherically Active Eclipsing dMe Binary with a Distant, Cool White Dwarf Companion",

abstract = " 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.",

keywords = "binaries: eclipsing, stars: activity, stars: individual (LP 133-373, LP 133-374), stars: late-type, white dwarfs",

author = "Vaccaro, {T. R.} and Oswalt, {T. D.} and M. Rudkin and Adela Kawka and Stephane Vennes and {Et al.}",

year = "2007",

month = jun,

day = "1",

doi = "10.1086/517872",

language = "American English",

volume = "661",

journal = "The Astrophysical Journal",

}

TY - JOUR

T1 - LP133-373 A New Chromospherically Active Eclipsing dMe Binary with a Distant, Cool White Dwarf Companion

AU - Vaccaro, T. R.

AU - Oswalt, T. D.

AU - Rudkin, M.

AU - Kawka, Adela

AU - Vennes, Stephane

AU - Et al., null

PY - 2007/6/1

Y1 - 2007/6/1

N2 - 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.

AB - 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.

KW - binaries: eclipsing

KW - stars: activity

KW - stars: individual (LP 133-373

KW - LP 133-374)

KW - stars: late-type

KW - white dwarfs

UR - https://commons.erau.edu/publication/1196

UR - https://commons.erau.edu/publication/889

U2 - 10.1086/517872

DO - 10.1086/517872

M3 - Article

VL - 661

JO - The Astrophysical Journal

JF - The Astrophysical Journal

ER -

LP133-373 A New Chromospherically Active Eclipsing dMe Binary with a Distant, Cool White Dwarf Companion

Abstract

Keywords

Disciplines

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