Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456*

Details Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456* Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456*

Apr 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...402..331a&link_type=abstract

Astronomy and Astrophysics, v.402, p.331-334 (2003)

Astronomy and Astrophysics

Astrophysics

2

Stars: Chemically Peculiar, Stars: Abundances, Stars: Individual: Hd 19400, Stars: Individual: Hd 34797, Stars: Individual: Hd 35456

Scientific paper

An analysis of the abundances of the helium-weak CP stars HD 19400, HD 34797 and HD 35456, is presented using ATLAS9 model atmospheres and observational material taken with a REOSC echelle spectrograph attached to the Jorge Sahade 2.15 m telescope at CASLEO. The light elements are deficient except silicon which is overabundant in HD 19400 and HD 34797. The iron peak elements are all overabundant by factors between 5 and 60. The heavy elements show an overabundance in the three stars studied.

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