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Not so lonely: The LBV binary HR Car

Published online by Cambridge University Press:  28 July 2017

T. Rivinius
Affiliation:
ESO - European Organisation for Astronomical Research in the Southern Hemisphere, Chile
H. M. J. Boffin
Affiliation:
ESO - European Organisation for Astronomical Research in the Southern Hemisphere, Chile ESO, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
A. Mérand
Affiliation:
ESO - European Organisation for Astronomical Research in the Southern Hemisphere, Chile ESO, Karl-Schwarzschild-Str. 2, 85748 Garching, Germany
A. Mehner
Affiliation:
ESO - European Organisation for Astronomical Research in the Southern Hemisphere, Chile
J.-B. LeBouquin
Affiliation:
Institut de Planétologie et d’Astrophysique de Grenoble, 38041 Grenoble, France
D. Pourbaix
Affiliation:
Institut d’Astronomie et d’Astrophysique, Université Libre de Bruxelles (ULB), Belgium
W.-J. de Wit
Affiliation:
ESO - European Organisation for Astronomical Research in the Southern Hemisphere, Chile
C. Martayan
Affiliation:
ESO - European Organisation for Astronomical Research in the Southern Hemisphere, Chile
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Abstract

Luminous Blue Variables (LBVs) are a brief phase in the evolution of massive stars, but a very important one. The giant eruptions remain enigmatic, but the discovery of the flagship LBV η Car to be a five-year highly eccentric binary put focus on possible binarity induced mechanism for these outbursts, and prompted binarity searches among LBVs. While several wide LBV binaries were identified, HR Car is the first system found to be similar to η Car, i.e., relatively close & eccentric.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2017 

References

Boffin, H. M. J., Rivinius, T., Mérand, A., et al. 2016, A&A, 593, A90 Google Scholar

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