New Damped Lyα Metallicities from Echellette Spectrograph and Imager Spectroscopy of Five Palomar Sky Survey Quasars | Zendy

J. X. Prochaska | Zendy; S. Castro | Zendy; S. G. Djorgovski | Zendy

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New Damped Lyα Metallicities from Echellette Spectrograph and Imager Spectroscopy of Five Palomar Sky Survey Quasars

Author(s) -

J. X. Prochaska,

S. Castro,

S. G. Djorgovski

Publication year - 2003

Publication title -

the astrophysical journal supplement series

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.546

H-Index - 277

eISSN - 1538-4365

pISSN - 0067-0049

DOI - 10.1086/376793

Subject(s) - spectrograph , quasar , physics , astrophysics , sky , telescope , astronomy , line of sight , line (geometry) , spectral line , galaxy , geometry , mathematics

This paper presents chemical abundance measurements for 12 new z>3 damped Lyasystems discovered toward five quasars from the Palomar Sky Survey. Wedetermine HI column densities from profile fits to the observed damped Lyaprofiles and measure ionic column densities and limits for all observedmetal-line transitions. This dataset, acquired with the Echellette Spectrographand Imager on the KeckII telescope, adds to the rapidly growing database ofdamped Lya abundances. It will impact studies of chemical evolution in theearly universe and help identify candidates for detailed follow-up observationswith echelle spectrographs. We report the discovery of the first quasarsightline with four cosmologically distinct damped Lya systems.Comment: 14 pages, 20 figures. Accepted to ApJS, May 9, 200

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