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Near-infrared images of MG 1131+0456 with the W. M. Keck telescope: Another dusty gravitational lens?Images of the gravitational lens system MG 1131+0456 taken with the near-infrared camera on the W. M. Keck telescope in the J and K(sub s) bands show that the infrared counterparts of the compact radio structure are exceedingly red, with J - K greater than 4.2 mag. The J image reveals only the lensing galaxy, while the K(sub s) image shows both the lens and the infrared counterparts of the compact radio components. After subtracting the lensing galaxy from the K(sub s) image, the position and orientation of the compact components agree with their radio counterparts. The broad-band spectrum and observed brightness of the lens suggest a giant galaxy at a redshift of approximately 0.75, while the color of the quasar images suggests significant extinction by dust in the lens. There is a significant excess of faint objects within 20 sec of MG 1131+0456. Depending on their mass and redshifts, these objects could complicate the lensing potential considerably.
Document ID
19950037946
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Larkin, J. E.
(California Inst. of Technology, Pasadena, CA United States)
Matthews, K.
(California Inst. of Technology, Pasadena, CA United States)
Lawrence, C. R.
(California Inst. of Technology, Pasadena, CA United States)
Graham, J. R.
(California Inst. of Technology, Pasadena, CA United States)
Harrison, W.
(California Association for Research in Astronomy, Kamuela, HI United States)
Jernigan, G.
(Univ. of California, Berkeley, CA United States)
Lin, S.
(California Inst. of Technology, Pasadena, CA United States)
Nelson, J.
(Univ. of California, Berkeley, CA United States)
Neugebauer, G.
(California Inst. of Technology, Pasadena, CA United States)
Smith, G.
(California Association for Research in Astronomy, Kamuela, HI United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1994
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 420
Issue: 1
ISSN: 0004-637X
Subject Category
Astronomy
Accession Number
95A69545
Distribution Limits
Public
Copyright
Other

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