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Paper published in a book (Scientific congresses and symposiums)
Deep Mixing in Slowly-rotating B Dwarfs: the Possible Role Played by Magnetic Fields
Morel, Thierry
2007In Unsolved Problems in Stellar Physics: A Conference in Honor of Douglas Gough
Peer reviewed
 

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Keywords :
Main-sequence: early-type stars; Magnetic and electric fields; polarization of starlight; Stellar structure; interiors; evolution; nucleosynthesis; ages; Abundances; chemical composition
Abstract :
[en] Evolutionary models for massive stars which take into account rotational mixing effects do not predict any core-processed material at the surface of B dwarfs with low rotational velocities. We present a detailed and fully homogeneous non-LTE abundance analysis of a sample of largely unevolved B stars which points to the existence of a population of intrinsically slowly-rotating, yet nitrogen-rich objects contrary to theoretical expectations. These observations are discussed in relation to the boron content and the (weak) magnetic field detected in some targets.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Morel, Thierry  ;  Katholieke Universiteit Leuven - KUL
Language :
English
Title :
Deep Mixing in Slowly-rotating B Dwarfs: the Possible Role Played by Magnetic Fields
Publication date :
01 November 2007
Audience :
International
Main work title :
Unsolved Problems in Stellar Physics: A Conference in Honor of Douglas Gough
Pages :
229-233
Peer reviewed :
Peer reviewed
Commentary :
948
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