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.
Titolo: | Elemental abundance studies of CP stars - The helium-weak stars HD 19400, HD 34797 and HD 35456 |
Autori interni: | |
Data di pubblicazione: | 2003 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.11769/8437 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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