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Gallium Overabundance in the Ap-Si Star HD 25823

Published online by Cambridge University Press:  12 April 2016

Marie-Christine Artru  and
Rubens Freire Ferrero
Marie-Christine Artru
Affiliation:
Département d’Astrophysique Fondamentale Observatoire de Meudon F-92195 Meudon Principal Cedex -, FRANCE
Rubens Freire Ferrero
Affiliation:
Observatoire de Strasbourg 11., rue de l’UniversitéF-67000 Strasbourg -, France

Abstract

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An anomalous enhancement of the resonance line of Ga II at 1414.44 Å is observed in IUE spectra of the silicon star HD 25823. High-resolution spectrum of this star is compared to synthetic spectra calculated in the range 1406–1422 Å. The LTE abundance of gallium is evaluated to log NGa = 6.3 ± 0.5 in the scale where log NH = 12.

Type
Section IV - Non-Magnetic CP and Related Stars
Information
International Astronomical Union Colloquium , Volume 90: Upper Main Sequence Stars with Anomalous Abundances , 1986 , pp. 421 - 424
Copyright
Copyright © Reidel 1986

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