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Lyman-alpha emission from the damped Lyman-alpha system toward H0836 + 113This study presents results of a comprehensive search for Ly-alpha emission from the 2.466-redshift damped Ly-alpha system toward the QSO H0836 + 113. Deep CCD images of the field surrounding the QSO were acquired with a narrow-band filter tuned to the wavelength centroid of the 2.466-redshift damped Ly-alpha line. Two superposed objects, one extended and the other compact, were detected within 4 arcsec of the QSO. Evidence is presented indicating that the extended object, seen only in the narrow-band frames, was detected in the light of Ly-alpha line radiation emitted by the damped system, while the compact object, seen with the broadband filters and in the narrow-band frames acquired with superior seeing, was detected in the light of the continuum radiation emitted by a foreground Mg II galaxy with a redshift of 0.79. Accurate spectra of the QSO were also obtained in order to observe the spatially unresolved Ly-alpha emission feature reported to exist at the bottom of the damped Ly-alpha absorption trough.
Document ID
19920038766
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Wolfe, A. M.
(California Univ. La Jolla, CA, United States)
Lanzetta, K. M.
(California, University La Jolla, United States)
Turnshek, D. A.
(Pittsburgh, University PA, United States)
Oke, J. B.
(California Institute of Technology Pasadena, United States)
Date Acquired
August 15, 2013
Publication Date
January 20, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 385
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
92A21390
Funding Number(s)
CONTRACT_GRANT: NAGW-2119
CONTRACT_GRANT: NSF AST-89-15070
Distribution Limits
Public
Copyright
Other

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