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HD 61396 : An unusual mass-transfer RS CVn binary

Griffin, R. F. ; Church, R. P. LU orcid and Tout, Christopher A. (2006) In New Astronomy 11(6). p.431-436
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.

Please use this url to cite or link to this publication:
author
; and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Orbits, Stars: individual: HD 61396, Stars: late-type
in
New Astronomy
volume
11
issue
6
pages
6 pages
publisher
Elsevier
external identifiers
  • scopus:33644628606
ISSN
1384-1076
DOI
10.1016/j.newast.2005.10.004
language
English
LU publication?
no
id
8239149c-d403-4b57-a2a0-4f81966731e2
date added to LUP
2019-06-05 14:26:11
date last changed
2022-04-26 01:24:32
@article{8239149c-d403-4b57-a2a0-4f81966731e2,
  abstract     = {{<p>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.</p>}},
  author       = {{Griffin, R. F. and Church, R. P. and Tout, Christopher A.}},
  issn         = {{1384-1076}},
  keywords     = {{Orbits; Stars: individual: HD 61396; Stars: late-type}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{6}},
  pages        = {{431--436}},
  publisher    = {{Elsevier}},
  series       = {{New Astronomy}},
  title        = {{HD 61396 : An unusual mass-transfer RS CVn binary}},
  url          = {{http://dx.doi.org/10.1016/j.newast.2005.10.004}},
  doi          = {{10.1016/j.newast.2005.10.004}},
  volume       = {{11}},
  year         = {{2006}},
}