Mg II Absorption Characteristics of a Volume-Limited Sample of Galaxies at z ~ 0.1

We present an initial survey of Mg II absorption characteristics in the halos of a carefully constructed, volume-limited subsample of galaxies embedded in the spectroscopic part of the Sloan Digital Sky Survey (SDSS). We observed quasars near sightlines to 20 low-redshift (z ~ 0.1), luminous (M r +...

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Bibliographic Details
Published in:The Astronomical journal 2009-12, Vol.138 (6), p.1817-1829
Main Authors: Barton, Elizabeth J, Cooke, Jeff
Format: Article
Language:English
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Summary:We present an initial survey of Mg II absorption characteristics in the halos of a carefully constructed, volume-limited subsample of galaxies embedded in the spectroscopic part of the Sloan Digital Sky Survey (SDSS). We observed quasars near sightlines to 20 low-redshift (z ~ 0.1), luminous (M r + 5log h = 0.3 A) Mg II absorption at the galaxy's redshift, six systems have upper limits which preclude strong Mg II absorption, while the remaining observations rule out very strong (W eq(2796) >= 1-2 A) absorption. The absorbers fall at higher impact parameters than many non-absorber sightlines, indicating a covering fraction fc 0.4 for >=0.3 A absorbers at z ~ 0.1, even at impact parameters
ISSN:1538-3881
0004-6256
1538-3881
DOI:10.1088/0004-6256/138/6/1817