ORBi: Martins F. - GCIRS 16SW: A massive eclipsing binary in the Galactic center

Reference : GCIRS 16SW: A massive eclipsing binary in the Galactic center


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/15718

Title :	GCIRS 16SW: A massive eclipsing binary in the Galactic center
Language :	English
Author, co-author :	Martins, F. [> > > >]
	Trippe, S. [> > > >]
	Paumard, T. [> > > >]
	Ott, T. [> > > >]
	Genzel, R. [> > > >]
	Rauw, Grégor [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
	Eisenhauer, F. [> > > >]
	Gillessen, S. [> > > >]
	Maness, H. [> > > >]
	Abuter, R. [> > > >]
Publication date :	1-Oct-2006
Journal title :	Astrophysical Journal
Publisher :	Univ Chicago Press
Volume :	649
Issue/season :	2, Part 2
Pages :	L103-L106
Audience :	International
ISSN :	0004-637X
City :	Chicago
Keywords :	[en] binaries : eclipsing ; Galaxy : center ; stars : early-type
Abstract :	[en] We report on the spectroscopic monitoring of GCIRS 16SW, an Ofpe/WN9 star and LBV candidate in the central parsec of the Galaxy. SINFONI observations show strong daily spectroscopic changes in the K band. Radial velocities are derived from the He I 2.112 mu m line complex and vary regularly with a period of 19.45 days, indicating that the star is most likely an eclipsing binary. Under various assumptions, we are able to derive a mass of similar to 50 M circle dot for each component.
Permalink :	http://hdl.handle.net/2268/15718

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