Current studies of spectroscopic binaries

Details Current studies of spectroscopic binaries Current studies of spectroscopic binaries

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988lastr.102..516m&link_type=abstract

L'Astronomie (ISSN 0004-6302), vol. 102, Dec. 1988, p. 516-521. In French.

Astronomy and Astrophysics

Astronomy

Binary Stars, Giant Stars, Radial Velocity, Stellar Spectra, Brown Dwarf Stars, Cool Stars, Faint Objects, Stellar Evolution, Symbiotic Stars, Triple Stars

Scientific paper

The CORAVEL spectrometer is described, and its application to the study of binary systems is discussed. The instrument can measure the radial velocities of weak stars in several minutes with a precision of 0.2 km/s. The large periods of barium giant stars and S-type giants suggests that in these systems the wind of the giant star is captured by its degenerate companion. A study of spectroscopic binaries in the Galactic halo indicates that the older Galactic stars have periods of between 12 and 13 days. Also considered is the observation of multiple systems.

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