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HD 21692


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Kinematic and spatial distributions of barium stars - Are the barium stars and AM stars related?
The possibility of an evolutionary link between Am stars and bariumstars is considered, and an examination of previous data suggests thatbarium star precursors are main-sequence stars of intermediate mass, aremost likely A and/or F dwarfs, and are intermediate-mass binaries withclose to intermediate orbital separations. The possible role of masstransfer in the later development of Am systems is explored. Masstransfer and loss from systems with a range of masses and orbitalseparations may explain such statistical peculiarities of barium starsas the large dispersion in absolute magnitude, the large range ofelemental abundances from star to star, and the small number of starswith large peculiar velocities.

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Observation and Astrometry data

Constellation:Fluss Eridanus
Right ascension:03h28m29.44s
Declination:-41°12'18.3"
Apparent magnitude:9.284
Proper motion RA:31.4
Proper motion Dec:153.7
B-T magnitude:9.909
V-T magnitude:9.336

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 21692
TYCHO-2 2000TYC 7571-822-1
USNO-A2.0USNO-A2 0450-01188771
HIPHIP 16184

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