ORBi: Rauw Grégor - On the multiplicity of the non-thermal radio emitters 9 Sgr and HD 168112

Reference : On the multiplicity of the non-thermal radio emitters 9 Sgr and HD 168112


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/12054

Title :	On the multiplicity of the non-thermal radio emitters 9 Sgr and HD 168112
Language :	English
Author, co-author :	Rauw, Grégor [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) - Sciences spatiales >]
	Sana, H. [> > > >]
	Gosset, Eric [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
	De Becker, Michaël [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Sciences spatiales >]
	Arias, J. [> > > >]
	Morrell, N. [> > > >]
	Eenens, P. [> > > >]
	Stickland, D. [> > > >]
Publication date :	Nov-2005
Main document title :	Massive Stars and High-Energy Emission in OB Associations
Pages :	85-88
On invitation :	No
Audience :	International
Event name :	JENAM 2005, "Distant Worlds"
Event date :	du 4 au 7 juillet 2005
Event organizer :	Université de Liège, IAGL
Event place (city) :	Liège
Event country :	Belgique
Keywords :	[en] Stars: early-type ; Stars : binaries ; Spectroscopy
Abstract :	[en] We discuss the first results of our ongoing optical spectroscopic monitoring campaign of the two O-type stars 9 Sgr and HD 168112. Both objects display a non-thermal radio emission and were considered as single stars. Based on a large set of high-resolution spectra, we find that 9 Sgr is clearly an eccentric SB2 binary with an orbital period of several years. On the other hand, no evidence for radial velocity variations attributable to binary motion is found in our spectra of HD 168112.
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/12054
Other URL :	http://adsabs.harvard.edu/abs/2005mshe.work...85R

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