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Ca II H and K Spectroscopy of ER Vul

Published online by Cambridge University Press:  12 April 2016

M.J. Fernández-Figueroa ,
J.E. Armentia ,
E. de Castro ,
M. Cornide  and
V. Reglero
M.J. Fernández-Figueroa
Affiliation:
Dept. Astrofísica, Universidad Complutense, E-28040 Madrid, Spain
J.E. Armentia
Affiliation:
Dept. Astrofísica, Universidad Complutense, E-28040 Madrid, Spain
E. de Castro
Affiliation:
Dept. Astrofísica, Universidad Complutense, E-28040 Madrid, Spain
M. Cornide
Affiliation:
Dept. Astrofísica, Universidad Complutense, E-28040 Madrid, Spain
V. Reglero
Affiliation:
Dept. Matemática Aplicada y Astronomía, Universidad de Valencia, E-46100 Burjassot, Spain

Extract

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ER Vul (HD 200391) is a double-lined spectroscopic binary, at a distance of 45 pc, catalogued as a short-period RS CVn binary, and has been found to present eclipses. The components have spectral types G0V/G5V, masses 1.07/0.98 M⊙, radii 1.23/1.23 R⊙ and Mv 4.8/4.6m (Strassmeier et al., 1988, and references therein). The system presents emission reversals of the H and K absorption lines (Bond, 1970; Eggen, 1978), but no information on the character of these emissions has been previously reported.

Type
Part IV Stellar activity
Information
International Astronomical Union Colloquium , Volume 130: The Sun and Cool Stars: activity, magnetism, dynamos , 1991 , pp. 483 - 485
Copyright
Copyright © Springer-Verlag 1991

References

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