Detection of the Galaxy Lensing the Doubly-imaged Quasar SBS 1520+530

Details Detection of the Galaxy Lensing the Doubly-imaged Quasar SBS 1520+530 Detection of the Galaxy Lensing the Doubly-imaged Quasar SBS 1520+530

1998-01-12

arxiv.org/abs/astro-ph/9801100v2

Astronomy and Astrophysics

Astrophysics

11 pages latex including one table and 2 postscript figures. Corrected typo. Accepted by AJ. Also available at http://www.hi

Scientific paper

10.1086/300288

H band observations with a spatial resolution of 0.15" carried out with the Canada-France-Hawaii Telescope adaptive optics system show a galaxy between the components of the double BAL quasar SBS 1520+530, thereby confirming this system as a gravitational lens. The galaxy is located 0.40" from the fainter of the two QSO images and is offset 0.12" 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 = 0.71 or z = 0.81, the redshifts of the two absorption line systems.

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