HD 145206 - The first semibarium star with a main-sequence close companion?

Details HD 145206 - The first semibarium star with a main-sequence close companion? HD 145206 - The first semibarium star with a main-sequence close companion?

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...224l..31b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 224, no. 1-2, Oct. 1989, p. L31-L33. Research supported by the Institut pour l

Astronomy and Astrophysics

Astrophysics

Barium, Companion Stars, Main Sequence Stars, Red Giant Stars, Stellar Spectra, Astronomical Spectroscopy, Stellar Evolution, Stellar Luminosity, Ultraviolet Spectra

Scientific paper

A 12 A/mm photographic spectrum of the binary red giant HD 145206 revealed slightly enhanced s-process lines with respect to standard stars of the same temperature and luminosity. The spectrum closely resembles that of a Ba0.5 semibarium star (following the classification of Keenan and Pitts, 1980) used for comparison. The mass transfer scenario generally invoked in order to explain barium stars cannot apply to this system, as the semibarium star companion is not a white dwarf.

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