ORBi: Nazé Yaël - The atypical emission-line star Hen 3-209

Reference : The atypical emission-line star Hen 3-209


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Earth sciences & physical geography
	To cite this reference:	http://hdl.handle.net/2268/3629

Title :	The atypical emission-line star Hen 3-209
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) >]
	Rauw, Grégor [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
	Hutsemekers, Damien [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Gosset, Eric [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
	Manfroid, Jean [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
	Royer, P. [> > > >]
Publication date :	1-Oct-2006
Journal title :	Monthly Notices of the Royal Astronomical Society
Publisher :	Blackwell Publishing
Volume :	371
Issue/season :	4
Pages :	1594-1600
Audience :	International
ISSN :	0035-8711
City :	Oxford
Keywords :	[en] stars : chemically peculiar ; stars : emission-line, Be ; stars : individual : Hen 3-209
Abstract :	[en] We analyse observations, spanning 15 yr, dedicated to the extreme emission-line object Hen 3-209. Our photometric data indicate that the luminosity of the star undergoes marked variations with a peak-to-peak amplitude of 0.65 mag. These variations are recurrent, with a period of 16.093 +/- 0.005 d. The spectrum of Hen 3-209 is peculiar with many different lines (H I, He I, Fe II,. showing P Cygni profiles. The line profiles are apparently changing in harmony with the photometry. The spectrum also contains [O III] lines that display a saddle profile topped by three peaks, with a maximum separation of about 600 km s(-1). Hen 3-209 is most likely an evolved luminous object suffering from mass ejection events and maybe belonging to a binary system.
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/3629
DOI :	10.1111/j.1365-2966.2006.10731.x
Other URL :	http://arxiv.org/abs/astro-ph/0606627

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