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

Christian Wolf, Alfonso Aragon-Salamanca, Michael Balogh, Marco Barden, Eric F. Bell, Meghan E. Gray, Chien Y. Peng, David Bacon, Fabio D. Barazza, Asmus Bohm, John A. R. Caldwell, Anna Gallazzi, Boris Haussler, Catherine Heymans, Knud Jahnke, Shardha Jogee, Eelco Van Kampen, Kyle Lane, Daniel H. McIntosh, Klaus MeisenheimerCasey Papovich, Sebastian F. Sanchez, Andy Taylor, Lutz Wisotzki, Xianzhong Zheng

Research output: Contribution to conferencePaperpeer-review

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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.
Original languageEnglish
Publication statusPublished - 2009
EventInternational Conference on the Starburst-AGN Connection - Shanghai Normal University, Shanghai
Duration: 27 Oct 200831 Oct 2008

Conference

ConferenceInternational Conference on the Starburst-AGN Connection
CityShanghai Normal University, Shanghai
Period27/10/0831/10/08

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