Contribution to the study of F-G-K-M binaries: XII. Orbital elements of seven new spectroscopic binaries

Details Contribution to the study of F-G-K-M binaries: XII. Orbital elements of seven new spectroscopic binaries Contribution to the study of F-G-K-M binaries: XII. Orbital elements of seven new spectroscopic binaries

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008an....329...44c&link_type=abstract

Astronomische Nachrichten, Vol.329, Issue 1, p.44

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2

Binaries: Spectroscopic, Stars: Individual (Hd 31855, Hd 59643, Hd 60092, Hd 133189, Hd 162262, Hd 203522, Bd +43O 1331)

Scientific paper

The orbital elements of seven single-lined spectroscopic binaries, HD 31855, HD 59643, HD 60092, HD 133189, HD 162262, HD 203522, BD +43o 1331 are presented. They are obtained from observations made with two photoelectric spectrometers of CORAVEL type, the first located at the Observatoire de Haute-Provence and the second at the Cambridge Observatories. From those orbital elements and other data available in the literature, we deduce some information about the unseen companions and their separations with respect to the primaries. We then discuss the rotation-revolution synchronism and conclude that some of those stars have probably reached the state of (pseudo-)synchronism. Finally we give a synopsis of the results obtained in this series of papers. Our radial velocity monitoring of more than three decades has allowed us to derive accurate orbital elements of 35 spectroscopic binaries, with a cool primary star of type F-G-K-M. The corresponding range of periods varies from a few days to more than 10 years.

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