High-angular resolution observations of the Pistol Star
Christophe Martayan (ESO-Chile, GEPI), Ronny Blomme, Jean-Baptiste Le, Bouquin (LAOG), Antoine Merand (ESO-Chile), Guillaume Montagnier (ESO-Chile),, Fernando Selman (ESO-Chile), Julien Girard (ESO-Chile), Andrew Fox, (ESO-Chile), Dietrich Baade (ESO-HQ), Yves Fremat, Alex Lobel
TL;DR
This paper presents near-infrared adaptive optics observations of the Pistol Star, revealing it is likely a binary system, which has implications for understanding the formation and evolution of massive stars.
Contribution
First high-angular resolution observations suggesting the Pistol Star is at least a binary, highlighting the role of multiplicity in massive star evolution.
Findings
Pistol Star is likely a binary system.
Observations used AO-assisted imaging, interferometry, and spectroscopy.
Results support the importance of multiplicity in massive star formation.
Abstract
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.
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