A spectroscopic study of some suspected chemically peculiar stars

Details A spectroscopic study of some suspected chemically peculiar stars A spectroscopic study of some suspected chemically peculiar stars

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998a%26a...331..627l&link_type=abstract

Astronomy and Astrophysics, v.331, p.627-632 (1998)

Astronomy and Astrophysics

Astrophysics

11

Stars: Chemically Peculiar, Abundances, Individual: Hd20629, Hd35575, Hd38602

Scientific paper

Time-resolved spectra in the 410 - 700 nm range have been obtained to investigate 10 stars which are classified as suspected chemically peculiar stars in The General Catalogue of Ap and Am stars by Renson et al. (1991) or in the latest literature. Among the studied stars, HD20629 presents metal abundances which are significantly different from main sequence star values and it should be classified as Silicon star. From the Hei587.6 nm line, we conclude that HD35575 is a helium weak star. Because of the found radial velocity variability and the derived abundances, the periodic photometric variable HD38602 could be an ellipsoidal variable.

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