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2002MNRAS.336.1030P - Mon. Not. R. Astron. Soc., 336, 1030-1042 (2002/November-1)
The status of Galactic field λ Bootis stars in the post-Hipparcos era.
PAUNZEN E., ILIEV I.K., KAMP I. and BARZOVA I.S.
Abstract (from CDS):
There crystallizes a clear picture of a homogeneous group of Population I objects found at all stages of their main-sequence evolution, with a peak at about 1 Gyr. No correlation of astrophysical parameters such as the projected rotational velocities or elemental abundances with age is found, suggesting that the a priori unknown mechanism, which creates λ Bootis stars, works continuously for late B- to early F-type stars in all stages of main-sequence evolution. Surprisingly, the sodium abundances seem to indicate an interaction between the stars and their local environment.
Abstract Copyright: RAS
Journal keyword(s): stars: chemically peculiar - stars: early-type.
Simbad objects: 124
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