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The Redshift of the Lensed Object in the Einstein Ring B0218+357

Cohen, Judith G. and Lawrence, Charles R. and Blandford, Roger D. (2003) The Redshift of the Lensed Object in the Einstein Ring B0218+357. Astrophysical Journal, 583 (1). pp. 67-69. ISSN 0004-637X. doi:10.1086/344837.

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We present a secure redshift of z = 0.944 ± 0.002 for the lensed object in the Einstein ring gravitational lens B0218+357 based on five broad emission lines, in good agreement with our preliminary value announced several years ago based solely on the detection of a single emission line.

Item Type:Article
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URLURL TypeDescription Paper
Cohen, Judith G.0000-0002-8039-4673
Blandford, Roger D.0000-0002-1854-5506
Additional Information:© 2003 The American Astronomical Society. Received 2002 September 6; accepted 2002 September 23. Based on observations obtained at the W.M. Keck Observatory, which is operated jointly by the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The entire Keck/LRIS user community owes a huge debt to Jerry Nelson, Gerry Smith, Bev Oke, and many other people who have worked to make the Keck Telescope and LRIS a reality and to operate and maintain the Keck Observatory. We are grateful to the W. M. Keck Foundation for the vision to fund the construction of the W. M. Keck Observatory. The authors wish to extend special thanks to those of Hawaiian ancestry on whose sacred mountain we are privileged to be guests. Without their generous hospitality, none of the observations presented herein would have been possible. The extragalactic work of J. G. C. is not supported by any federal agency. R. D. B. acknowledges support by the National Science Foundation under grant AST-9900866.
Funding AgencyGrant Number
W. M. Keck FoundationUNSPECIFIED
Subject Keywords:galaxies: distances and redshifts — galaxies: individual (B0218+357) — gravitational lensing
Issue or Number:1
Record Number:CaltechAUTHORS:20190522-103246441
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Official Citation:Judith G. Cohen et al 2003 ApJ 583 67
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95693
Deposited By: Tony Diaz
Deposited On:22 May 2019 21:47
Last Modified:16 Nov 2021 17:14

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