NOAO >   Observing Info >   Approved Programs >   2009A-0140

Small NOAO Logo

Proposal Information for 2009A-0140


PI: John Lucey, University of Durham, john.lucey@durham.ac.uk
Address: Department of Physics, South Road, Durham DH1 3LE, United Kingdom

CoI: Tim Rawle, University of Durham
CoI: Russell Smith, University of Durham
CoI: Ray Sharples, University of Durham
CoI: Mark Norris, University of North Carolina

Title: The origin of S0 disks 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 a spiral into an S0 via star formation quenching is the favoured model, the mechanism for removal or exhaustion of gas is not known. Stellar population studies of S0s are a powerful diagnostic tool to investigate such mechanisms. While most S0s in rich clusters are found to contain predominantly old stars, some younger ( 2 Gyr) S0s have been identified. However such studies have been largely limited to measuring the cores of S0s which are dominated by the bulge light. Here we propose deep, long-slit GMOS spectroscopy of 12 edge-on S0s in the Coma cluster in order to determine the age, metallicity and [alpha/Fe] of both their bulges and their disks, in order to investigate the S0 formation process.


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 >   2009A-0140

noaoprop-help@noao.edu

Small NOAO Logo