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Discovery of a Probable Gravitational Lens

Published online by Cambridge University Press:  07 August 2017

G. Meylan  and
S. Djorgovski
G. Meylan
Affiliation:
European Southern Observatory, D-8046 Garching bei München, FRG
S. Djorgovski
Affiliation:
Palomar Observatory, California Institute of Technology, Pasadena, CA 91125, USA

Abstract

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We report the discovery of a new probable gravitational lens system, associated with the quasar UM 425 = 1120+019, at z = 1.465. The optical image of the system consists of 4 or more components. The two well-observed brightest components have very similar spectra. The difference of the two spectra (scaled appropriately) is consistent with a spectrum of a galaxy at z ≃ 0.6. There is a large number of faint galaxies in the field, suggestive of a lensing cluster at that redshift.

Type
Part 4: Black Holes, Accretion Disks and Gravitational Lenses
Information
Symposium - International Astronomical Union , Volume 134: Active Galactic Nuclei , 1989 , pp. 271 - 272
Copyright
Copyright © Kluwer 1989