The RS Canum Venaticorum system BD + 61 deg 1211 = 2A 1052 + 606 | Zendy

D. Crampton | Zendy; J. J. Dobias | Zendy; B. Margon | Zendy

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The RS Canum Venaticorum system BD + 61 deg 1211 = 2A 1052 + 606

Author(s) -

D. Crampton,

J. J. Dobias,

B. Margon

Publication year - 1979

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/157583

Subject(s) - physics , astrophysics , radial velocity , stars , light curve , binary number , binary star , emission spectrum , astronomy , spectral line , arithmetic , mathematics

Spectroscopic observations of BD + 61 deg 1211, which is associated with the weak variable X-ray source 2A 1052 + 606, show that it is a single-lined binary of the RS Canum Venaticorum type with variable H(alpha) and Ca II emission reversals. The period is 7.492 + or - 0.0009 days and the semi-amplitude of the velocity curve is 28 + or 2 km/s. The mass function is 0.016 solar mass. This is the first member of the RS Canum Venaticorum class to be recognized via its X-ray emission, and the second such object to emit both hard (1-3 A) and soft (greater than 10 A) X-rays.Peer reviewed: YesNRC publication: Ye

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