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High-angular resolution observations of the Pistol star

Published online by Cambridge University Press:  12 July 2011

Christophe Martayan ,
Ronny Blomme ,
Jean-Baptiste Le Bouquin ,
Anthony Merand ,
Guillaume Montagnier ,
Fernando Selman ,
Julien Girard ,
Andrew Fox ,
Dietrich Baade  and
Yves Frémat
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Christophe Martayan
Affiliation:
ESOChile GEPI-Observatoire de Meudon, France
Ronny Blomme
Affiliation:
Royal Observatory of Belgium, Brussels, Belgium
Jean-Baptiste Le Bouquin
Affiliation:
Laboratoire d'Astrophysique de Grenoble, France
Anthony Merand
Affiliation:
ESOChile
Guillaume Montagnier
Affiliation:
ESOChile
Fernando Selman
Affiliation:
ESOChile
Julien Girard
Affiliation:
ESOChile
Andrew Fox
Affiliation:
ESOChile
Dietrich Baade
Affiliation:
ESOGermany
Yves Frémat
Affiliation:
Royal Observatory of Belgium, Brussels, Belgium
Alex Lobel
Affiliation:
Royal Observatory of Belgium, Brussels, Belgium
Fabrice Martins
Affiliation:
GRAAL, Montpellier, France
Fabien Patru
Affiliation:
ESOChile
Thomas Rivinius
Affiliation:
ESOChile
Hugues Sana
Affiliation:
Amsterdam University, The Netherlands
Stanislas Štefl
Affiliation:
ESOChile
Juan Zorec
Affiliation:
Institut d'Astrophysique de Paris, France
Thierry Semaan
Affiliation:
GEPI-Observatoire de Meudon, France
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Abstract

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First results of near-IR adaptive optics (AO)-assisted imaging, interferometry, and spectroscopy of this Luminous Blue Variable (LBV) are presented. They suggest that the Pistol Star is at least double. If the association is physical, it would reinforce questions concerning the importance of multiplicity for the formation and evolution of extremely massive stars.

Keywords

binaries: generalcircumstellar matterstars: early-typestars: mass loss
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S272: Active OB stars: structure, evolution, mass loss, and critical limits , July 2010 , pp. 616 - 617
Copyright
Copyright © International Astronomical Union 2011

References

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