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C. Martayan, R. Blomme, J.-B. Le Bouquin, A. Merand, G. Montagnier, F. Selman, J. Girard, A. Fox, D. Baade, Y. Frémat, A. Lobel, F. Martins, F. Patru, T. Rivinius, H. Sana, S. Stefl, J. Zorec & T. Semaan

X-shooter, NACO, and AMBER observations of the LBV Pistol Star

Article
Open Access
Mots-clés : en, 400 - 404

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.

To cite this article

C. Martayan, R. Blomme, J.-B. Le Bouquin, A. Merand, G. Montagnier, F. Selman, J. Girard, A. Fox, D. Baade, Y. Frémat, A. Lobel, F. Martins, F. Patru, T. Rivinius, H. Sana, S. Stefl, J. Zorec & T. Semaan, «X-shooter, NACO, and AMBER observations of the LBV Pistol Star», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 80 - Année 2011, 400 - 404 URL : https://popups.uliege.be/0037-9565/index.php?id=2870.

About: C. Martayan

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile, and GEPI, Observatoire de Paris, place Jules Janssen 92195 Meudon Cedex, France

About: R. Blomme

Royal Observatory of Belgium, 3 avenue circulaire, 1180 Brussel, Belgium

About: J.-B. Le Bouquin

Laboratoire d’Astrophysique de Grenoble, 38400 Saint-Martin d’Hères, France

About: A. Merand

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile

About: G. Montagnier

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile

About: F. Selman

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile

About: J. Girard

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile

About: A. Fox

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile

About: D. Baade

ESO, Karl-Schwarschild-Str. 2, Garching bei Muenchen, Germany

About: Y. Frémat

Royal Observatory of Belgium, 3 avenue circulaire, 1180 Brussel, Belgium

About: A. Lobel

Royal Observatory of Belgium, 3 avenue circulaire, 1180 Brussel, Belgium

About: F. Martins

GRAAL - UMR5024 Université de Montpellier II - CC 72 34095 Montpellier Cedex 05 France

About: F. Patru

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile

About: T. Rivinius

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile

About: H. Sana

Universiteit van Amsterdam Sterrenkundig 1090 GE Amsterdam The Netherlands

About: S. Stefl

ESO, Alonso de Cordova 3107 Vitacura, Santiago, Chile

About: J. Zorec

Institut d’Astrophysique de Paris, UMR7095 CNRS, Université P& MC, 98bis boulevard Arago, 75014 Paris, France

About: T. Semaan

GEPI, Observatoire de Paris, place Jules Janssen 92195 Meudon Cedex, France