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Galaxy And Mass Assembly (GAMA): deconstructing bimodality - I. Red ones and blue ones

Taylor, Edward N; Hopkins, Andrew M.; Baldry, Ivan K; Bland-Hawthorn, Jonathan; Brown, Michael J I; Colless, Matthew; Driver, Simon; Norberg, P; Robotham, A. S. G.; Alpaslan, M; Brough, S


We measure the mass functions for generically red and blue galaxies, using a z < 0.12 sample of log M∗ > 8.7 field galaxies from the Galaxy And Mass Assembly (GAMA) survey. Our motivation is that, as we show, the dominant uncertainty in existing measurements stems from how ‘red’ and ‘blue’ galaxies have been selected/defined. Accordingly, we model our data as two naturally overlapping populations, each with their own mass function and colour–mass relation, which enables us characterize the...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Monthly Notices of the Royal Astronomical Society
DOI: 10.1093/mnras/stu1900
Access Rights: Open Access


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