Discovery of a low-mass companion to the solar-type star TYC 2534-698-1

Stephen R. Kane; Suvrath Mahadevan; William D. Cochran; Rachel A. Street; Thirupathi Sivarani; Gregory W. Henry; Michael H. Williamson

doi:10.1088/0004-637X/692/1/290

Discovery of a low-mass companion to the solar-type star TYC 2534-698-1

Stephen R. Kane
, Suvrath Mahadevan
, William D. Cochran
, Rachel A. Street
, Thirupathi Sivarani
, Gregory W. Henry
, Michael H. Williamson

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

5 Scopus citations

Abstract

Brown dwarfs and low-mass stellar companions are interesting objects to study since they occupy the mass region between deuterium and hydrogen burning. We report here the serendipitous discovery of a low-mass companion in an eccentric orbit around a solar-type main-sequence star. The stellar primary, TYC 2534-698-1, is a G2V star that was monitored both spectroscopically and photometrically over the course of several months. Radial velocity observations indicate a minimum mass of 0.037 M_⊙ and an orbital period of ∼103 days for the companion. Photometry outside of the transit window shows the star to be stable to within ∼6 millimags. The semimajor axis of the orbit places the companion in the "brown dwarf desert" and we discuss potential follow-up observations that could constrain the mass of the companion.

Original language	English (US)
Pages (from-to)	290-297
Number of pages	8
Journal	Astrophysical Journal
Volume	692
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/692/1/290
State	Published - Feb 10 2009

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/692/1/290

Cite this

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title = "Discovery of a low-mass companion to the solar-type star TYC 2534-698-1",

abstract = "Brown dwarfs and low-mass stellar companions are interesting objects to study since they occupy the mass region between deuterium and hydrogen burning. We report here the serendipitous discovery of a low-mass companion in an eccentric orbit around a solar-type main-sequence star. The stellar primary, TYC 2534-698-1, is a G2V star that was monitored both spectroscopically and photometrically over the course of several months. Radial velocity observations indicate a minimum mass of 0.037 M⊙ and an orbital period of ∼103 days for the companion. Photometry outside of the transit window shows the star to be stable to within ∼6 millimags. The semimajor axis of the orbit places the companion in the {"}brown dwarf desert{"} and we discuss potential follow-up observations that could constrain the mass of the companion.",

author = "Kane, \{Stephen R.\} and Suvrath Mahadevan and Cochran, \{William D.\} and Street, \{Rachel A.\} and Thirupathi Sivarani and Henry, \{Gregory W.\} and Williamson, \{Michael H.\}",

year = "2009",

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doi = "10.1088/0004-637X/692/1/290",

language = "English (US)",

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pages = "290--297",

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TY - JOUR

T1 - Discovery of a low-mass companion to the solar-type star TYC 2534-698-1

AU - Kane, Stephen R.

AU - Mahadevan, Suvrath

AU - Cochran, William D.

AU - Street, Rachel A.

AU - Sivarani, Thirupathi

AU - Henry, Gregory W.

AU - Williamson, Michael H.

PY - 2009/2/10

Y1 - 2009/2/10

N2 - Brown dwarfs and low-mass stellar companions are interesting objects to study since they occupy the mass region between deuterium and hydrogen burning. We report here the serendipitous discovery of a low-mass companion in an eccentric orbit around a solar-type main-sequence star. The stellar primary, TYC 2534-698-1, is a G2V star that was monitored both spectroscopically and photometrically over the course of several months. Radial velocity observations indicate a minimum mass of 0.037 M⊙ and an orbital period of ∼103 days for the companion. Photometry outside of the transit window shows the star to be stable to within ∼6 millimags. The semimajor axis of the orbit places the companion in the "brown dwarf desert" and we discuss potential follow-up observations that could constrain the mass of the companion.

AB - Brown dwarfs and low-mass stellar companions are interesting objects to study since they occupy the mass region between deuterium and hydrogen burning. We report here the serendipitous discovery of a low-mass companion in an eccentric orbit around a solar-type main-sequence star. The stellar primary, TYC 2534-698-1, is a G2V star that was monitored both spectroscopically and photometrically over the course of several months. Radial velocity observations indicate a minimum mass of 0.037 M⊙ and an orbital period of ∼103 days for the companion. Photometry outside of the transit window shows the star to be stable to within ∼6 millimags. The semimajor axis of the orbit places the companion in the "brown dwarf desert" and we discuss potential follow-up observations that could constrain the mass of the companion.

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VL - 692

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JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

Discovery of a low-mass companion to the solar-type star TYC 2534-698-1

Abstract

All Science Journal Classification (ASJC) codes

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