ORBi: Borguet Benoît - Quasar Host Orientation and Polarization: Insights into the Type 1/Type 2 Dichotomy

Reference : Quasar Host Orientation and Polarization: Insights into the Type 1/Type 2 Dichotomy


	Document type :	Scientific congresses and symposiums : Paper published in a journal
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/5159

Title :	Quasar Host Orientation and Polarization: Insights into the Type 1/Type 2 Dichotomy
Language :	English
Author, co-author :	Borguet, Benoît [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
	Hutsemekers, Damien [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Letawe, Géraldine [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
	Letawe, Yannick [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
	Magain, Pierre [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Publication date :	2008
Journal title :	Revista Mexicana de Astronomía y Astrofísica
Publisher :	Universidad Nacional Autónoma de México
Volume :	32
Pages :	167-169
Audience :	International
ISSN :	0185-1101
City :	México
Event name :	The Nuclear Region, Host Galaxy and Environment of Active Galaxies
Event place (city) :	Huatulco
Event country :	Mexico
Keywords :	[en] quasar ; unification model
Abstract :	[en] We investigate correlations between the optical linear polarization position angle and the orientation of the host galaxy/extended emission of Type 1 and Type 2 Radio-Loud (RL) and Radio-Quiet (RQ) quasars. We have used high resolution Hubble Space Telescope (HST) data and deconvolution process to obtain a good determination of the host galaxy orientation. With these new measurements and a compilation of data from the literature, we find a significant correlation between the polarization position angle and the position angle of the major axis of the host galaxy/extended emission. The correlation appears different for Type 1 and Type 2 objects and depends on the redshift of the source. Interpretations in the framework of the unification model are discussed.
Funders :	Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
Target :	Professionals
Permalink :	http://hdl.handle.net/2268/5159

File(s) associated to this reference

Fulltext file(s):

	File	Commentary	Version	Size	Access
Open access	artben_revmex.pdf	No commentary	Publisher postprint	5.12 MB	View/Open

All documents in ORBi are protected by a user license.

Dspace v1.5