Galaxy Ecology: groups and low-density environments in the SDSS and 2dFGRS
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Authors
Balogh, Michael
Eke, Vincent R
Miller, Christine
Lewis, Ian
Bower, Richard
Couch, Warrick
Nichol, Robert
Bland-Hawthorn, Joss
Baldry, Ivan K
Baugh, Carlton M
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Blackwell Publishing Ltd
Abstract
We analyse the observed correlation between galaxy environment and Hα emission-line strength, using volume-limited samples and group catalogues of 24 968 galaxies at 0.05 < z < 0.095, drawn from the 2dF Galaxy Redshift Survey (M bJ < -19.5) and the Sloan
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Monthly Notices of the Royal Astronomical Society