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γ Per: bright, but ill-understood

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1017/S1743921307006151
AuteurRechercher : 1
Affiliation
  1. Conseil national de recherches du Canada. Institut Herzberg d'astrophysique du CNRC
FormatTexte, Article
ConférenceInternational Astronomical Union Symposium 240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics, August 22-25, 2006, Prague, Czech Republic
Résumé
γ Per looks like an unexceptional composite–spectrum binary, and has habitually been classified as G8 III+A3 V. Nevertheless, previous studies have produced conflicting results, of component masses that are uncomfortably high, or luminosities that are too large, or (most recently) showing that there is nothing abnormal about the components after all. However, new high-precision CCD spectroscopy and isolation of the secondary spectrum finds that mass of the giant is 3.9 M, which is indeed greater than would be expected from its published spectral type, and that both components have somewhat enhanced luminosities, thus re-opening the question of the origin and evolution of this somewhat unusual system.
Date de publication
Dans
  • Binary Stars as Critical Tools & Tests in Contemporary Astrophysics : 645–649.
Série
  • Proceedings of the International Astronomical Union, nº 2, issue S240.
Langueanglais
Publications évaluées par des pairsOui
Numéro NPARC13053072
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Identificateur de l’enregistrement9ad3f5f3-c3ec-47b5-bf91-63abda72ada9
Enregistrement créé2009-11-25
Enregistrement modifié2020-04-22
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