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Characteristic Absorption Features in the Spectra of Ap-Si Stars between 1250 and 1850 Å.

Published online by Cambridge University Press:  12 April 2016

Marie-Christine Artru  and
Thierry Lanz
Marie-Christine Artru
Affiliation:
Département d’Astrophysique Fondamentale Observatoire de Meudon F-92195 MEUDON PRINCIPAL CEDEX., France
Thierry Lanz
Affiliation:
Institut d’Astronomie de l’Université de Lausanneand Observatoire de Genève. CH 1290 CHAVANNES-DES-BOIS., Switzerland

Abstract

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On the basis of lUE data, the specific absorption features in the spectra of Ap-Si Stars are displayed in the 1250–1850 Å range and identified when possible. The contribution of the Si II multiplets is calculated in LTE for a typical overabundance × 102 of silicon. It accounts for only a small part of the observed absorption. Common unidentified structures, smaller than the 1400 Å depression are pointed out.

Type
Section I - Theoretical Considerations
Information
International Astronomical Union Colloquium , Volume 90: Upper Main Sequence Stars with Anomalous Abundances , 1986 , pp. 105 - 108
Copyright
Copyright © Reidel 1986

References

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