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Title:
MgII absorption through intermediate redshift galaxies
Authors:
Churchill, Christopher W.; Kacprzak, Glenn G.; Steidel, Charles C.
Publication:
Probing Galaxies through Quasar Absorption Lines, IAU Colloquium Proceedings of the International Astronomical Union 199, held March 14-18 2005, Shanghai, People's Republic of China, edited by Peter R. Williams, Cheng-Gang Shu and Brice Menard. Cambridge: Cambridge University Press 2005., pp.24-41
Publication Date:
03/2005
Origin:
CUP
DOI:
10.1017/S1743921305002401
Bibliographic Code:
2005pgqa.conf...24C

Abstract

The current status and remaining questions of MgII absorbers are reviewed with an eye toward new results incorporating high quality hubble space telescope images of the absorbing galaxies. In the end, we find that our current picture of extended gaseous regions around galaxies at earlier epochs is in need of some revision; MgII absorbing "halos" appear to be patchier and their geometry less regular than previously inferred. We also find that the so-called "weak" MgII absorbers are associated with normal galaxies over a wide range of impact parameters, suggesting that this class of absorber does not strictly select low surface brightness, dwarf galaxies, or igm material. We emphasise the need for a complete survey of the galaxies in quasar fields, and the importance of obtaining rotation curves of confirmed absorbing galaxies.

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