HR 4657 - evidence for a thick-disk field blue straggler

Details HR 4657 - evidence for a thick-disk field blue straggler HR 4657 - evidence for a thick-disk field blue straggler

Jul 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26a...347..897f&link_type=abstract

Astronomy and Astrophysics, v.347, p.897-900 (1999)

Astronomy and Astrophysics

Astrophysics

16

Stars: Fundamental Parameters, Stars: Individual: Hr 4657, Stars: Blue Stragglers, Stars: White Dwarfs

Scientific paper

Observational evidence for mass and angular momentum transfer from a companion that is now a white dwarf is presented for the nearby HR 4657 (F5V), a single-lined spectroscopic binary of the Milky Way's thick-disk population. With an orbital period of ~ 850 days the results support the possible importance of long period, low radial velocity amplitude binaries as a viable mechanism, among others, for the blue-straggler phenomenon. Based on observations at the German Spanish Astronomical Center, Calar Alto, Spain

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