A survey of proper motion stars. XI. Orbits for the second 40 spectroscopic binaries

David W. Latham; Tsevi Mazeh; Robert P. Stefanik; Robert J. Davis; Bruce W. Carney; Yuval Krymolowski; John B. Laird; Guillermo Torres; Jon A. Morse

doi:10.1086/116273

A survey of proper motion stars. XI. Orbits for the second 40 spectroscopic binaries

David W. Latham^*, Tsevi Mazeh, Robert P. Stefanik, Robert J. Davis, Bruce W. Carney, Yuval Krymolowski, John B. Laird, Guillermo Torres, Jon A. Morse

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Review article › peer-review

48 Scopus citations

Abstract

We report orbital solutions and spectroscopic metallicities for a second set of 40 spectroscopic binaries found in an extended version of the Carney and Latham survey of proper-motion stars. To investigate the distribution of orbital eccentricity versus period for a pure sample of halo binaries, we select only those systems more metal poor than [m/H] = -1.6. We find that the transition between circular and eccentric orbits occurs at a period of about 19 days. This supports the interpretation that tidal circularization has been more important on the main sequence than during the pre-main-sequence stage for our sample of old binaries in the halo.

Original language	English
Pages (from-to)	774-795
Number of pages	22
Journal	Astronomical Journal
Volume	104
Issue number	2
DOIs	https://doi.org/10.1086/116273
State	Published - Aug 1992

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title = "A survey of proper motion stars. XI. Orbits for the second 40 spectroscopic binaries",

abstract = "We report orbital solutions and spectroscopic metallicities for a second set of 40 spectroscopic binaries found in an extended version of the Carney and Latham survey of proper-motion stars. To investigate the distribution of orbital eccentricity versus period for a pure sample of halo binaries, we select only those systems more metal poor than [m/H] = -1.6. We find that the transition between circular and eccentric orbits occurs at a period of about 19 days. This supports the interpretation that tidal circularization has been more important on the main sequence than during the pre-main-sequence stage for our sample of old binaries in the halo.",

author = "Latham, {David W.} and Tsevi Mazeh and Stefanik, {Robert P.} and Davis, {Robert J.} and Carney, {Bruce W.} and Yuval Krymolowski and Laird, {John B.} and Guillermo Torres and Morse, {Jon A.}",

year = "1992",

month = aug,

doi = "10.1086/116273",

language = "אנגלית",

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AU - Latham, David W.

AU - Mazeh, Tsevi

AU - Stefanik, Robert P.

AU - Davis, Robert J.

AU - Carney, Bruce W.

AU - Krymolowski, Yuval

AU - Laird, John B.

AU - Torres, Guillermo

AU - Morse, Jon A.

PY - 1992/8

Y1 - 1992/8

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AB - We report orbital solutions and spectroscopic metallicities for a second set of 40 spectroscopic binaries found in an extended version of the Carney and Latham survey of proper-motion stars. To investigate the distribution of orbital eccentricity versus period for a pure sample of halo binaries, we select only those systems more metal poor than [m/H] = -1.6. We find that the transition between circular and eccentric orbits occurs at a period of about 19 days. This supports the interpretation that tidal circularization has been more important on the main sequence than during the pre-main-sequence stage for our sample of old binaries in the halo.

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A survey of proper motion stars. XI. Orbits for the second 40 spectroscopic binaries

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