NOAO >   Observing Info >   Approved Programs >   2011A-0083

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Proposal Information for 2011A-0083


PI: Tim Rawle, University of Arizona (Astronomy), trawle@as.arizona.edu
Address: Department of Astronomy and Steward Observatory, 933 North Cherry Avenue, Tucson, AZ 85721-0065, USA

CoI: John Lucey, University of Durham
CoI: Russell Smith, University of Durham
CoI: Mark Norris, University of North Carolina

Title: The origin of S0 discs in the dense cluster environment

Abstract: Various mechanisms have been proposed to account for the large population of S0 galaxies observed in the cores of local rich clusters. While the transformation of spirals into S0s via star formation quenching is the favoured model, the process and location within the cluster for removal or exhaustion of gas is unknown. Stellar population studies are a powerful diagnostic tool to investigate such mechanisms, but have been largely limited to the bulge-dominated cores of S0s. By determining the age, metallicity and [alpha/Fe] for both bulge and disc components of cluster S0s, spanning a wide range of densities, we can investigate the effect of local environment on galaxy formation processes. In 2009A we started a program to obtain GMOS spectroscopy for a carefully selected sample of S0s in the Coma cluster. Here we propose to complete the project by observing the nine remaining S0s in the sample.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2011A-0083

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