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Intermediate Peculiar Stars: The Bp-Ap Si Stars

Published online by Cambridge University Press:  12 April 2016

C. Mégessier
C. Mégessier*
Affiliation:
Observatoire de Paris-Meudon 92195 Meudon Principal Cedex, France

Abstract

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This paper contains two parts:

  1. 1) A review of the most recent results on the silicon peculiar stars. Five topics will be reviewed: parameters of Bp-Ap Si stars — UV spectrum — spectrophotometry — spectrum variations and flux redistribution -magnetic braking.

  2. 2) The horizontal diffusion of the silicon in the presence of a magnetic field and, as a consequence, the evolution of the silicon abundance repartition in the stellar atmosphere. A first observational test is presented that supports the predicted scenario.

Type
Section III - Magnetic CP Stars
Information
International Astronomical Union Colloquium , Volume 90: Upper Main Sequence Stars with Anomalous Abundances , 1986 , pp. 275 - 285
Copyright
Copyright © Reidel 1986

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