New Damped Lyα Metallicities from Echellette Spectrograph and Imager Spectroscopy of Five Palomar Sky Survey Quasars
Abstract
This paper presents chemical abundance measurements for 12 new z > 3 damped Lyα systems discovered toward five quasars from the Palomar Sky Survey. We determine H I column densities from profile fits to the observed damped Lyα profiles and measure ionic column densities and limits for all observed metal line transitions. This data set, acquired with the Echellette Spectrograph and Imager on the Keck II telescope, adds to the rapidly growing database of damped Lyα abundances. It will impact studies of chemical evolution in the early universe and help identify candidates for detailed follow-up observations with echelle spectrographs. We report the discovery of the first quasar sight line with four cosmologically distinct damped Lyα systems.
Additional Information
© 2003 The American Astronomical Society. Received 2003 February 28; accepted 2003 May 8. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. We acknowledge the Keck support staff for their efforts in performing these observations.Attached Files
Published - Prochaska_2003_ApJS_148_317.pdf
Accepted Version - 0305313.pdf
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Additional details
- Alternative title
- New Damped Lya Metallicities from ESI Spectroscopy of Five Palomar Sky Survey Quasars
- Eprint ID
- 99029
- Resolver ID
- CaltechAUTHORS:20191002-145719740
- Created
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2019-10-02Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field