NOAO >   Observing Info >   Approved Programs >   2009A-0389

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Proposal Information for 2009A-0389


PI: David Sand, University of Arizona, dave.j.sand@gmail.com
Address: Astronomy Department, 933 North Cherry Avenue, Tucson, AZ 85716, USA

CoI: Melissa Lynn Graham, University of Victoria
CoI: Dennis Zaritsky, University of Arizona
CoI: Chris Pritchet, University of Victoria
CoI: Henk Hoekstra, Leiden University
CoI: Stephane Herbert-Fort, University of Arizona
CoI: Dennis Just, University of Arizona
CoI: Suresh Sivanandam, University of Arizona

Title: Spectroscopy of Hostless Supernovae Candidates

Abstract: Observational evidence has indicated that ~30% of the stellar luminosity in galaxy clusters is in a diffuse, extended intracluster component, which originates from stripped and disrupted cluster galaxies. One way to measure the contribution of this diffuse stellar population to both the total cluster stellar luminosity and the metal enrichment of the intracluster medium (ICM) is through the relative rates of intracluster to cluster galaxy supernovae (SNe). We are in the midst of a large program searching for SNe in galaxy clusters at 0.05 < z < 0.15. In order to maximize the scientific return on our SN imaging campaign and other spectroscopic efforts, we seek to continue our ToO program on Gemini North to spectroscopically confirm ALL of our intracluster SNe candidates next semester. We will confirm up to ~3 intracluster SNe in 2009A (~8-10 over the survey lifetime), allowing us to constrain the rate of intracluster SNe Ia and their contribution to the metal enrichment of the ICM.


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



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