Journal
ASTRONOMY & ASTROPHYSICS
Volume 402, Issue 1, Pages 331-334Publisher
E D P SCIENCES
DOI: 10.1051/0004-6361:20030222
Keywords
stars : chemically peculiar; stars : abundances; stars : individual : HD 19400; stars : individual : HD 34797; stars : individual : HD 35456
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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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