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Optically-passive spirals: The missing link in gradual star formation suppression upon cluster infall

Abstract:
Galaxies migrate from the blue cloud to the red sequence when their star formation is quenched. Here, we report on galaxies quenched by environmental effects and not by mergers or strong AGN as often invoked: They form stars at a reduced rate which is optically even less conspicuous, and manifest a transition population of blue spirals evolving into S0 galaxies. These 'optically passive' or 'red spirals' are found in large numbers in the STAGES project (and by Galaxy Zoo) in the infall region of clusters and groups.
Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Aragón-Salamanca, A More by this author
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Volume:
408
Pages:
248-253
Publication date:
2009-06-01
URN:
uuid:ad6dcb3f-4d13-40c8-b2ab-4eb26aa93ccd
Source identifiers:
71243
Local pid:
pubs:71243
ISBN:
978-1-58381-696-7

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