Hostname: page-component-cd9895bd7-dzt6s Total loading time: 0 Render date: 2024-12-26T04:51:35.862Z Has data issue: false hasContentIssue false
  • English
  • Français

γ Per: Bright, but Ill-Understood

Published online by Cambridge University Press:  09 August 2007

R. Elizabeth Griffin
R. Elizabeth Griffin*
Affiliation:
Herzberg Institute for Astrophysics, DAO, Canada
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S240: Binary Stars as Critical Tools & Tests in Contemporary Astrophysics , August 2006 , pp. 645 - 649
Copyright
Copyright © International Astronomical Union 2007

References

McLaughlin, D.B., 1948, AJ, 53, 200 CrossRefGoogle Scholar
Pols, O.R. et al. , 1998, MNRAS, 298, 525 CrossRefGoogle Scholar
Popper, D.M. & McAlister, H.A., 1987, AJ, 94, 700 CrossRefGoogle Scholar
Pourbaix, D., 1999, A&A, 348, 127 Google Scholar