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

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

Bulletin de la Société Royale des Sciences de Liège

0037-9565 1783-5720

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

(Volume 80 - Année 2011)

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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.

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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», 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.