Detection of the Galaxy Lensing the Doubly Imaged Quasar SBS 1520+530

Open Access

1 April 1998

journal article
research article
Published by American Astronomical Society in The Astronomical Journal

Vol. 115 (4) , 1383-1387
https://doi.org/10.1086/300288

Abstract

H-band observations with a spatial resolution of 015 carried out with the Canada-France-Hawaii Telescope adaptive optics system show a galaxy between the components of the double broad absorption line QSO SBS 1520+530, thereby confirming this system as a gravitational lens. The galaxy is located 040 from the fainter of the two QSO images and is offset 012 from the line joining them. The H magnitude of the lensing galaxy is ~1 mag fainter than expected from the velocity dispersion derived for the lensing galaxy were it at z = 0.72 or z = 0.81, the redshifts of the two absorption-line systems.

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