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Photograph of Ross Church

Ross Church

Senior lecturer

Photograph of Ross Church

HD 61396 : An unusual mass-transfer RS CVn binary

Author

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

Summary, in English

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.

Publishing year

2006-04-01

Language

English

Pages

431-436

Publication/Series

New Astronomy

Volume

11

Issue

6

Document type

Journal article

Publisher

Elsevier

Keywords

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

Status

Published

ISBN/ISSN/Other

  • ISSN: 1384-1076