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The Population of Weak Mg II Absorbers. II. The Properties of Single-Cloud Systems
- Source :
- The Astrophysical Journal; February 2002, Vol. 565 Issue: 2 p743-761, 19p
- Publication Year :
- 2002
-
Abstract
- We present an investigation of Mg II absorbers characterized as single-cloud "weak systems" [defined by Wr(l2796) < 0.3 A] at z ~ 1. We measured column densities and Doppler parameters for Mg II and Fe II in 15 systems found in High Resolution Echelle Spectrometer/Keck spectra at 6.6 km s-1. Using these quantities and C IV, Lya, and Lyman limit absorption observed with the Faint Object Spectrograph on the Hubble Space Telescope (resolution ~230 km s-1), we applied photoionization models to each system to constrain metallicities, densities, ionization conditions, and sizes. We find the following:
Details
- Language :
- English
- ISSN :
- 0004637X and 15384357
- Volume :
- 565
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- The Astrophysical Journal
- Publication Type :
- Periodical
- Accession number :
- ejs18551074