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Lick slit spectra of thirty-eight objective prism quasar candidates and low metallicity halo starsLick Observatory slit spectra of 38 objects which were claimed to have pronounced UV excess and emission lines are presented. Eleven QSOs, four galaxies at z of about 0.1, 22 stars, and one unidentified object with a low S/N spectrum were found. Of 11 objects which Zhan and Chen (1987, 1989) suggested were QSO with z(prism) not greater than 2.8; eight are QSOs. Six of the QSOs show absorption systems, including Q0000+027A with a relatively strong associated C IV absorption system, and Q0008+008 with a damped Ly-alpha system with an H I column density of 10 exp 21/sq cm. The equivalent widths of the Ca II K line, the G band, and the Balmer lines in 10 stars with the best spectra are measured, and metallicities are derived. Seven of them are in the range -2.5 to -1.7, while the others are less metal-poor.
Document ID
19930066905
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Tytler, David
(California Univ. La Jolla, United States)
Fan, Xiao-Ming
(California Univ. La Jolla; Columbia Univ., New York, United States)
Junkkarinen, Vesa T.
(NASA Headquarters Washington, DC United States)
Cohen, Ross D.
(California Univ. La Jolla, United States)
Date Acquired
August 16, 2013
Publication Date
August 1, 1993
Publication Information
Publication: Astronomical Journal
Volume: 106
Issue: 2
ISSN: 0004-6256
Subject Category
Astrophysics
Accession Number
93A50902
Funding Number(s)
CONTRACT_GRANT: NAGW-2119
CONTRACT_GRANT: NAS5-29293
CONTRACT_GRANT: NAS5-26555
Distribution Limits
Public
Copyright
Other

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