HD 61396: An unusual mass-transfer RS CVn binary

R. F. Griffin; R. P. Church; Christopher A. Tout

doi:10.1016/j.newast.2005.10.004

HD 61396: An unusual mass-transfer RS CVn binary

R. F. Griffin, R. P. Church, Christopher A. Tout

University of Cambridge

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

Abstract

HD 61396 has been identified as an X-ray and radio source and has shown Hα emission and photometric variability which have marked it out as an RS CVn star. Although it has been termed an RS CVn binary, hard evidence of its duplicity has been lacking. It is now shown to be a double-lined binary consisting of two giant stars, probably of almost equal size and luminosity but with a mass ratio of more than eight to one, in a 34-day orbit that is circular or very nearly so. Mass transfer is probably still continuing. We have not been able to produce a satisfactory evolutionary model.

Original language	English
Pages (from-to)	431-436
Number of pages	6
Journal	New Astronomy
Volume	11
Issue number	6
DOIs	https://doi.org/10.1016/j.newast.2005.10.004
Publication status	Published - 2006 Apr 1
Externally published	Yes

Subject classification (UKÄ)

Astronomy, Astrophysics and Cosmology

Free keywords

Orbits
Stars: individual: HD 61396
Stars: late-type

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10.1016/j.newast.2005.10.004

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abstract = "HD 61396 has been identified as an X-ray and radio source and has shown Hα emission and photometric variability which have marked it out as an RS CVn star. Although it has been termed an RS CVn binary, hard evidence of its duplicity has been lacking. It is now shown to be a double-lined binary consisting of two giant stars, probably of almost equal size and luminosity but with a mass ratio of more than eight to one, in a 34-day orbit that is circular or very nearly so. Mass transfer is probably still continuing. We have not been able to produce a satisfactory evolutionary model.",

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AU - Church, R. P.

AU - Tout, Christopher A.

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N2 - HD 61396 has been identified as an X-ray and radio source and has shown Hα emission and photometric variability which have marked it out as an RS CVn star. Although it has been termed an RS CVn binary, hard evidence of its duplicity has been lacking. It is now shown to be a double-lined binary consisting of two giant stars, probably of almost equal size and luminosity but with a mass ratio of more than eight to one, in a 34-day orbit that is circular or very nearly so. Mass transfer is probably still continuing. We have not been able to produce a satisfactory evolutionary model.

AB - HD 61396 has been identified as an X-ray and radio source and has shown Hα emission and photometric variability which have marked it out as an RS CVn star. Although it has been termed an RS CVn binary, hard evidence of its duplicity has been lacking. It is now shown to be a double-lined binary consisting of two giant stars, probably of almost equal size and luminosity but with a mass ratio of more than eight to one, in a 34-day orbit that is circular or very nearly so. Mass transfer is probably still continuing. We have not been able to produce a satisfactory evolutionary model.

KW - Orbits

KW - Stars: individual: HD 61396

KW - Stars: late-type

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VL - 11

SP - 431

EP - 436

JO - New Astronomy

JF - New Astronomy

IS - 6

ER -

HD 61396: An unusual mass-transfer RS CVn binary

Abstract

Subject classification (UKÄ)

Free keywords

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