ORBi: Surdej Jean - Further investigation of the pair of quasars Q0107

Reference : Further investigation of the pair of quasars Q0107 - 025 A and B


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/17773

Title :	Further investigation of the pair of quasars Q0107 - 025 A and B
Language :	English
Author, co-author :	Surdej, Jean [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Arp, H. [Mount Wilson and Las Campanas Observatories, Pasadena, CA]
	Gosset, Eric [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE) >]
	Kruszewski, A. [Obserwatorium Astronomiczne, Warsaw, Poland]
	Robertson, J. G. [Anglo-Australian Observatory, Epping, Australia]
	Shaver, P. A. [> > > >]
	Swings, Jean-Pierre [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO) >]
Publication date :	1986
Journal title :	Astronomy and Astrophysics
Publisher :	EDP Sciences
Volume :	161
Pages :	209-216
Audience :	International
ISSN :	0004-6361
e-ISSN :	1432-0746
City :	Les Ulis
Country :	France
Keywords :	[en] QUASARS ; SPECTRUM ANALYSIS ; ASTRONOMICAL PHOTOMETRY ; FORBIDDEN TRANSITIONS ; GALACTIC CLUSTERS ; GRAVITATIONAL LENSES ; RED SHIFT ; SPECTRAL RESOLUTION ; ASTRONOMICAL SPECTROSCOPY
Abstract :	[en] Low and intermediate dispersion spectroscopy of Q0107 - 025 A and B obtained at ESO, AAT, and MMT provide evidence for spectral differences between these two quasars. A redshift difference of 0.004 is found between the two objects, and forbidden emission lines due to O II (3727 A), Ne III (1815), and possibly Ne V (3426 A), are seen in the spectrum of Q0107 - 025 A, while only the forbidden Ne III line at 1815 A is possibly detected in the spectdrum of Q0107 - 025 B. No narrow absorption lines could be detected in the 3252 - 5616 A spectral range of the intermediate resolution data of either quasar, and the spectrum of quasar B is found to be steeper in the blue that of the quasar A. The possible presence of a highly redshifted cluster of galaxies in the field of these quasars is suggested by CCD photometry.
Permalink :	http://hdl.handle.net/2268/17773
Other URL :	http://esoads.eso.org/abs/1986A%26A...161..209S
Mentions required by the publisher for OA :	The authors thank EDP Sciences for their deposit authorization

File(s) associated to this reference

Fulltext file(s):

	File	Commentary	Version	Size	Access
Open access	Surdej_A&A_1986_161_209_216.pdf		Publisher postprint	1.2 MB	View/Open

All documents in ORBi are protected by a user license.

Dspace v1.5