INVESTIGADORES
ALONSO GIRALDES Maria Sol
artículos
Título:
Elemental abundance studies of CP stars The helium-weak stars HD 19400, HD 34797 and HD 35456*
Autor/es:
M. S. ALONSO; Z. LÓPEZGARCı́A; S. MALARODA; F. LEONE
Revista:
ASTRONOMY AND ASTROPHYSICS
Editorial:
EDP SCIENCES S A
Referencias:
Lugar: Paris; Año: 2003 vol. 402 p. 331 - 334
ISSN:
0004-6361
Resumen:
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.
