ORBi: Nazé Yaël - First detection of phase-dependent colliding wind X-ray emission outside the Milky Way

Reference : First detection of phase-dependent colliding wind X-ray emission outside the Milky Way


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
	To cite this reference:	http://hdl.handle.net/2268/1834

Title :	First detection of phase-dependent colliding wind X-ray emission outside the Milky Way
Language :	English
Author, co-author :	Nazé, Yaël [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
	Corcoran, M. F. [> > > >]
	Koenigsberger, G. [> > > >]
	Moffat, A. F. J. [> > > >]
Publication date :	20-Mar-2007
Journal title :	Astrophysical Journal
Publisher :	Univ Chicago Press
Volume :	658
Issue/season :	1, Part 2
Pages :	L25-L28
Audience :	International
ISSN :	0004-637X
City :	Chicago
Keywords :	[en] Magellanic Clouds ; stars : individual (HD 5980) ; stars : winds, outflows ; stars : Wolf-Rayet ; X-rays : binaries
Abstract :	[en] After having reported the detection of X-rays emitted by the peculiar system HD 5980, we assess here the origin of this high-energy emission from additional X-ray observations obtained with XMM-Newton. This research provides the first detection of apparently periodic X-ray emission from hot gas produced by the collision of winds in an evolved massive binary outside the Milky Way. It also provides the first X-ray monitoring of a luminous blue variable only years after its eruption and shows that the dominant source of the X-rays is not associated with the ejecta. After having reported the detection of X-rays emitted by the peculiar system HD 5980, we assess here the origin of this high-energy emission from additional X-ray observations obtained with XMM-Newton. This research provides the first detection of apparently periodic X-ray emission from hot gas produced by the collision of winds in an evolved massive binary outside the Milky Way. It also provides the first X-ray monitoring of a luminous blue variable only years after its eruption and shows that the dominant source of the X-rays is not associated with the ejecta.
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/1834
DOI :	10.1086/513510
Other URL :	http://arxiv.org/abs/astro-ph/0702403

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