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IR observations of the double quasar 0957 + 561 A, B and the intervening galaxyInfrared observations of the double quasar 0957 + 561 A, B and the intervening galaxy believed to be responsible for its double appearance by gravitational light deflection are reported. Observations were obtained of each quasar at 1.6 and 2.2 microns and of the 12.5 arcsec region centered between the two quasars at 1.2, 1.6 and 2.2 microns. Extended IR emission is observed in the vicinity of both quasars and is attributed to emission from the intervening galaxy. The two quasars are found to have a constant flux ratio in all observed wavelength ranges, consistent with the achromatic imaging predicted by the gravitational lens model, and to exhibit an unusual continuum distribution in the region 0.35-2.2 microns. The infrared observations are also consistent with a giant elliptical lens galaxy at a redshift of approximately 0.40.
Document ID
19800064396
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Soifer, B. T.
(Hawaii Univ. Honolulu, HI, United States)
Neugebauer, G.
(Hawaii Univ. Honolulu, HI, United States)
Wynn-Williams, C. G.
(Hawaii Univ. Honolulu, HI, United States)
Matthews, K.
(Palomar Observatory Pasadena, Calif., United States)
Becklin, E. E.
(Hawaii Univ. Honolulu, HI, United States)
Capps, R.
(Hawaii, University Honolulu, Hawaii, United States)
Date Acquired
August 10, 2013
Publication Date
May 8, 1980
Publication Information
Publication: Nature
Volume: 285
Subject Category
Astrophysics
Accession Number
80A48566
Funding Number(s)
CONTRACT_GRANT: NSF AST-78-26028
CONTRACT_GRANT: NSF AST-77-20516
CONTRACT_GRANT: NASW-3159
CONTRACT_GRANT: NGL-05-002-207
Distribution Limits
Public
Copyright
Other

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