The nature of the F STR 4077-A stars. IV - Search for white dwarfs around barium dwarfs

Details The nature of the F STR 4077-A stars. IV - Search for white dwarfs around barium dwarfs The nature of the F STR 4077-A stars. IV - Search for white dwarfs around barium dwarfs

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..489n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 251, no. 2, Nov. 1991, p. 489-494. Research supported by SNSF.

Astronomy and Astrophysics

Astronomy

9

Binary Stars, F Stars, Metallicity, Stellar Evolution, Ultraviolet Radiation, White Dwarf Stars, Abundance, Barium, Energy Distribution, Iue, Mass Transfer, Ultraviolet Astronomy

Scientific paper

The energy distribution of three stars classified as F str 4077-A by Bidelman has been observed in the ultraviolet with the IUE satellite. Although the stars examined have the same kind of abundance anomalies as the Ba giants and Bond's CH subgiants (i.e. an overabundance of s-process elements), no UV excess related with the presence of the expected white dwarf companion was found. The implications for the mass-transfer scenario are discussed.

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