Abstract/Details

The clustering of galaxies around damped absorbers


2003 2003

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Abstract (summary)

We measured the clustering of galaxies around damped absorbers, all at a redshift of approximately three. For this purpose, we used wide-field images that covered a total area of one square degree. We selected galaxies that were close to the absorbers (in a redshift slice) using Bayesian photometric redshift techniques. In the redshift slice centered on the absorbers, we detected the clustering of galaxies at the 87% confidence level. Due to the small sample of absorbers, we could not conclude whether the clustering was larger or weaker than that of the galaxies with each other. As a cross-check, in three other redshift slices that were not centered on the absorbers, there was no evidence for clustering.

We performed the same analysis on simulated data sets from numerical simulations. There, we found that the clustering of galaxies around the simulated absorbers is weaker than that of the galaxies with each other, by a factor of approximately two. This is consistent with damped absorbers being associated with low-luminosity galaxies.

Indexing (details)


Subject
Astronomy;
Astrophysics
Classification
0606: Astronomy
0606: Astrophysics
Identifier / keyword
Pure sciences; Absorbers; Clustering; Galaxies; High-redshift galaxies; Quasar absorption lines
Title
The clustering of galaxies around damped absorbers
Author
Bouche, Nicolas F.
Number of pages
232
Publication year
2003
Degree date
2003
School code
0118
Source
DAI-B 64/11, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
Advisor
Lowenthal, James D.
University/institution
University of Massachusetts Amherst
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
3110470
ProQuest document ID
305322721
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/305322721
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