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

D. Crampton | Zendy; Paul L. Schechter | Zendy; J. L. Beuzit | Zendy

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

Author(s) -

D. Crampton,

Paul L. Schechter,

J. L. Beuzit

Publication year - 1998

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/300288

Subject(s) - physics , quasar , astrophysics , galaxy , gravitational lens , redshift , velocity dispersion , astronomy , telescope , line (geometry) , geometry , mathematics

H band observations with a spatial resolution of 0.15" carried out with theCanada-France-Hawaii Telescope adaptive optics system show a galaxy between thecomponents of the double BAL quasar SBS 1520+530, thereby confirming thissystem as a gravitational lens. The galaxy is located 0.40" from the fainter ofthe two QSO images and is offset 0.12" from the line joining them. The Hmagnitude of the lensing galaxy is ~1 mag fainter than expected from thevelocity 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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