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Papers
The unchanging circumgalactic medium over the past 11 billion years
Article first published online: 5 NOV 2012
DOI: 10.1111/j.1365-2966.2012.22053.x
© 2012 The Author Monthly Notices of the Royal Astronomical Society © 2012 RAS
Issue
Monthly Notices of the Royal Astronomical Society
Volume 427, Issue 2, pages 1238–1244, 1 December 2012
Additional Information
How to Cite
Chen, H.-W. (2012), The unchanging circumgalactic medium over the past 11 billion years. Monthly Notices of the Royal Astronomical Society, 427: 1238–1244. doi: 10.1111/j.1365-2966.2012.22053.x
Publication History
- Issue published online: 5 NOV 2012
- Article first published online: 5 NOV 2012
- Manuscript Accepted: 4 SEP 2012
- Manuscript Received: 27 AUG 2012
- Abstract
- Article
- References
- Cited By
Keywords:
- surveys;
- galaxies: haloes;
- quasars: absorption lines;
- galaxies: star formation
ABSTRACT
This paper examines how the circumgalactic medium (CGM) evolves as a function of time by comparing results from different absorption-line surveys that have been conducted in the vicinities of galaxies at different redshifts. Despite very different star formation properties of the galaxies considered in these separate studies and different intergalactic radiation fields at redshifts between z ≈ 2.2 and z ∼ 0, I show that both the spatial extent and mean absorption equivalent width of the CGM around galaxies of comparable mass have changed little over this cosmic time interval.