ORBi: Claeskens Jean-François - HST observations of gravitationally lensed QSOs

Reference : HST observations of gravitationally lensed QSOs


	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/2268/21706

Title :	HST observations of gravitationally lensed QSOs
Language :	English
Author, co-author :	Claeskens, Jean-François [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Sluse, Dominique [> > > >]
	Surdej, Jean [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Publication date :	Jun-2008
Main document title :	proceedings of the 41st ESLAB Symposium "The Impact of HST on European Astronomy" (June 2007)
Publisher :	Astrophysics and Space Science Proceedings series edited by Springer
Volume :	0806
On invitation :	Yes
Audience :	International
Event name :	The 41st ESLAB Symposium "The Impact of HST on European Astronomy" (June 2007)
Event date :	29 May to 1 June, 2007
Event organizer :	ST-ECF
Event place (city) :	ESTEC, Noordwijk
Event country :	Netherlands
Keywords :	[en] Astrophysics
Abstract :	[en] Thanks to its sharp view, HST has significantly improved our knowledge of tens of gravitationally lensed quasars in four different respects: (1) confirming their lensed nature; (2) detecting the lensing galaxy responsible for the image splitting; (3) improving the astrometric accuracy on the positions of the unresolved QSO images and of the lens; (4) resolving extended lensed structures from the QSO hosts into faint NIR or optical rings or arcs. These observations have helped to break some degeneracies on the lens potential, to probe the galaxy evolution and to reconstruct the true shape of the QSO host with an increased angular resolution.
Target :	Researchers
Permalink :	http://hdl.handle.net/2268/21706
Other URL :	http://esoads.eso.org/abs/2008arXiv0806.0567C
Mentions required by the publisher for OA :	The authors thank SAO/NASA ADS Astronomy Abstract Service for their deposit authorization
Commentary :	http://de.arxiv.org/abs/0806.0567

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Open access	Claeskens_2008_41st ESLAB Symposium.pdf		Publisher postprint	303.22 kB	View/Open

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