Poster (Scientific congresses and symposiums)
HD 150136: towards one of the most massive systems?
Mahy, Laurent; Gosset, Eric; Rauw, Grégor et al.
2010IAUS 272 Active OB stars - structure, evolution, mass loss and critical limits
 

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Keywords :
spectroscopic binary; HD 150136; orbital parameters
Abstract :
[en] The improvement of the astronomical instrumentation allowed scientists to develop new analysis techniques to investigate binary and multiple stars. In this context, we present the preliminary results of an intense monitoring devoted to the triple system, HD 150136. Supposed to be the nearest O3 star (1.3 kpc), this object is also composed of two other early O-type stars, making it one of the most massive systems known until now (~ 134Mʘ). This multiple star is a non-thermal radio emitter and presents a colliding wind interaction zone. To determine the physical parameters of this system, we applied a disentangling program to study individually the three components. It allows us to revise their spectral classification and to derive a new orbital solution for the short-period system but also the first one for the entire system.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Mahy, Laurent ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique observationnelle (sol et espace)
Gosset, Eric ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Rauw, Grégor  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales
Sana, Hugues
Fauchez, Thomas
Nitschelm, Christian
Language :
English
Title :
HD 150136: towards one of the most massive systems?
Publication date :
2010
Event name :
IAUS 272 Active OB stars - structure, evolution, mass loss and critical limits
Event place :
Paris, France
Event date :
Juillet 2010
Audience :
International
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since 10 February 2011

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