ORBi: Surdej Jean - Spectroscopic observations of thirteen optically-selected QSOs in a large field centred around NGC 5334

Reference : Spectroscopic observations of thirteen optically-selected QSOs in a large field centred ...


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/17715

Title :	Spectroscopic observations of thirteen optically-selected QSOs in a large field centred around NGC 5334
Language :	English
Author, co-author :	Surdej, Jean [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Swings, Jean-Pierre [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
	Arp, H. C. [Mount Wilson and Las Campanas Observatories, Pasadena, CA]
	Barbier, R. [European Southern Observatory, La Silla, Chile]
Publication date :	1982
Journal title :	Astronomy and Astrophysics
Publisher :	EDP Sciences
Volume :	114
Pages :	182-187
Peer reviewed :	Yes (verified by ORBi)
Audience :	International
ISSN :	0004-6361
e-ISSN :	1432-0746
City :	Les Ulis
Country :	France
Keywords :	[en] QUASARS ; RED SHIFT ; SPECTRAL LINE WIDTH ; ABSORPTION SPECTRA ; LUMINOSITY ; SPACE DENSITY ; SPECTRUM ANALYSIS ; ULTRAVIOLET SPECTRA ; ASTRONOMICAL SPECTROSCOPY
Abstract :	[en] A large field (approximately 25 sq deg) around NGC 5334 was searched for QSO candidates with ultraviolet-excess, in order to investigate the space density, distribution, and luminosity of quasars near as well as far from bright galaxies. Spectroscopic data obtained with the European Southern Observatory 3.6 m telescope are presented for 13 quasars identified within a sample of 23 observed candidates. As expected, the redshift of these optically selected quasars was found to fall in the range 0.23-2.08, with only one exception. Two, and possibly three, of the quasars of the largest redshift show absorption lines, while the remaining 10 faint blue objects display zero-redshift stellar spectra.
Permalink :	http://hdl.handle.net/2268/17715
Other URL :	http://esoads.eso.org/abs/1982A%26A...114..182S
Mentions required by the publisher for OA :	The authors thank EDP Sciences for their deposit authorization

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