Optical Spectroscopy of Hostless Supernovae Candidates

Details Optical Spectroscopy of Hostless Supernovae Candidates Optical Spectroscopy of Hostless Supernovae Candidates

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008noao.prop..320s&link_type=abstract

NOAO Proposal ID #2008B-0320

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Scientific paper

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 per semester (~10-15 over the survey lifetime) in our cluster sample, allowing us to constrain the rate of intracluster SNe Ia and their contribution to the metal enrichment of the ICM.

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