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- Volume 80 - Année 2011
- X-shooter, NACO, and AMBER observations of the LBV Pistol Star
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X-shooter, NACO, and AMBER observations of the LBV Pistol Star
Document(s) associé(s)
Annexes
Abstract
We present multi-instrument and multi-wavelength observations of the famous LBV star Pistol Star.
These observations are part of a larger program on early O stars at different metallicities. The Pistol Star has been claimed to be one of the most massive star known, with 250 solar masses. We present preliminary results based on X-shooter spectra, as well as observations performed with the VLTI-AMBER and the VLTNACO adaptive optics. The X-shooter spectrograph provides simultaneously a spectrum from the UV to the K-band with a resolving power of ±15000. The preliminary results obtained indicate that Pistol Star has similar properties to eta-Car, including shells of matter, but is also a binary.
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A propos de : C. Martayan
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile, and GEPI, Observatoire de Paris, place Jules Janssen 92195 Meudon Cedex, France
A propos de : R. Blomme
Royal Observatory of Belgium, 3 avenue circulaire, 1180 Brussel, Belgium
A propos de : J.-B. Le Bouquin
Laboratoire d’Astrophysique de Grenoble, 38400 Saint-Martin d’Hères, France
A propos de : A. Merand
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile
A propos de : G. Montagnier
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile
A propos de : F. Selman
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile
A propos de : J. Girard
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile
A propos de : A. Fox
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile
A propos de : D. Baade
ESO, Karl-Schwarschild-Str. 2, Garching bei Muenchen, Germany
A propos de : Y. Frémat
Royal Observatory of Belgium, 3 avenue circulaire, 1180 Brussel, Belgium
A propos de : A. Lobel
Royal Observatory of Belgium, 3 avenue circulaire, 1180 Brussel, Belgium
A propos de : F. Martins
GRAAL - UMR5024 Université de Montpellier II - CC 72 34095 Montpellier Cedex 05 France
A propos de : F. Patru
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile
A propos de : T. Rivinius
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile
A propos de : H. Sana
Universiteit van Amsterdam Sterrenkundig 1090 GE Amsterdam The Netherlands
A propos de : S. Stefl
ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile
A propos de : J. Zorec
Institut d’Astrophysique de Paris, UMR7095 CNRS, Université P& MC, 98bis boulevard Arago, 75014 Paris, France
A propos de : T. Semaan
GEPI, Observatoire de Paris, place Jules Janssen 92195 Meudon Cedex, France