Article (Scientific journals)
Optical imaging of the gravitational lens system B 1422+231
Remy; Surdej, Jean; Smette, A. et al.
1993In Astronomy and Astrophysics, 278, p. 19-L22
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Keywords :
EXTRAGALACTIC RADIO SOURCES; GRAVITATIONAL LENSES; IMAGES; QUASARS; ASTROMETRY; INFRARED IMAGERY; POSITION (LOCATION); ASTRONOMICAL PHOTOGRAPHY
Abstract :
[en] Direct optical images (Bessel V, R and Gunn i; average seeing of 0.88 seconds) of B1422+231, obtained in March 1993 at European Southern Observatory (ESO) (La Silla), have been decomposed by fitting multiple Point Spread Functions (PSFs). We detect the optical counterparts of the four known radio point-like components. No additional optical image is found, but due to the compactness of the configuration, our detection limit for additional point sources is rather low (19.3 in R). The deduced positions and photometry of the four optical components agree pretty well with the radio and IR observations and this study provides further evidence supporting the gravitational lens origin of B1422+231.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Remy
Surdej, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Smette, A.;  Inst. d'Astrophysique, Liege, Belgium
Claeskens, Jean-François ;  Inst. d'Astrophysique, Liege, Belgium
Language :
English
Title :
Optical imaging of the gravitational lens system B 1422+231
Publication date :
1993
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
278
Pages :
L19-L22
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 20 October 2009

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