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Poster (Scientific congresses and symposiums)
X-raying the winds of the evolved massive binary HDE228766
Rauw, Grégor; Mahy, Laurent; Nazé, Yaël et al.
2014COSPAR 2014
 

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Abstract :
[en] HDE228766 is an evolved massive binary hosting a rare Of-WN8ha transition object on a circular orbit about a normal O7 star. We have obtained XMM-Newton EPIC spectra of this system at three key orbital phases (two conjunctions and quadrature phase) that allow us to probe the absorbing column towards the wind interaction zone as seen through the wind of the O7 star and the Of-WN8ha star. We combine these observations with a simple model of the wind-wind collision to infer the properties of the wind interaction zone (opening angle of the shock cone) and constrain the properties of the stellar winds in this system. This will be a poster by Rauw,G; Mahy,L; Naze,Y and myself
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Rauw, Grégor  ;  Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)
Mahy, Laurent ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Nazé, Yaël  ;  Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)
Swings, Jean-Pierre ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Language :
English
Title :
X-raying the winds of the evolved massive binary HDE228766
Publication date :
August 2014
Event name :
COSPAR 2014
Event date :
2-10 August 2014
Audience :
International
Available on ORBi :
since 29 August 2014

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