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Millions of Single Cloud Weak MgII Systems
Chris Churchill, Jane Rigby, Jane Charlton
We report on a population of absorption systems selected by the presence of very weak Mg II doublets. A sub-population of these systems are iron enriched and have near solar metall…
Phase Structure of Weak MgII Absorbers: Star Forming Pockets Outside of Galaxies
Jane C. Charlton, Christopher W. Churchill, Jie Ding +3
A new and mysterious class of object has been revealed by the detection of numerous weak MgII doublets in quasar absorption line spectra. The properties of these objects will be re…
The Population of Weak MgII Absorbers. II The Properties of Single-Cloud Systems
Jane R. Rigby, Jane C. Charlton, Christopher W. Churchill
We present an investigation of MgII absorbers characterized as single-cloud weak systems at z~1. We measured column densities and Doppler parameters for MgII and FeII in 15 systems…