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Chemical Composition of the Pole-On Be Star HD 120991

Published online by Cambridge University Press:  26 May 2016

Y. Frémat ,
J. Zorec  and
A.-M. Hubert
Y. Frémat
Affiliation:
Observatoire de Paris, Section d'Astrophysique de Meudon, GEPI, FRE K 2459, 5 Place Jules Janssen, 92195 Meudon CEDEX, France
J. Zorec
Affiliation:
Institut d'Astrophysique de Paris, CNRS, 98bis Boulevard Arago, 75014 Paris, France
A.-M. Hubert
Affiliation:
Observatoire de Paris, Section d'Astrophysique de Meudon, GEPI, FRE K 2459, 5 Place Jules Janssen, 92195 Meudon CEDEX, France

Abstract

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In the present work, we propose a study performed on a pole-on Be star using its IUE and FUSE spectra that we showed only slightly affected by circumstellar emission. All our computations take into account the effects of fast rotation on the spectra (differential Doppler broadening + deformation and gravitational darkening). Using the line profiles of several well known transitions and a least squares method, we determine the abundance of light elements in the photosphere of HD 120991 and compare them to the chemical composition of the interstellar medium seen in the line of sight.

Type
Session 2 Rotation in Relation with Abundances and Magnetic Fields
Information
Symposium - International Astronomical Union , Volume 215: Stellar Rotation , 2004 , pp. 224 - 225
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

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