NOAO >   Observing Info >   Approved Programs >   2014A-0258

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Proposal Information for 2014A-0258


PI: David Sand, Texas Tech University, david.sand@ttu.edu
Address: TX, USA

CoI: Melissa Graham, UC Berkeley
CoI: Dennis Zaritsky, U of Arizona
CoI: Chris Pritchet, University of Victoria
CoI: Sebastien Fabbro, U of Victoria
CoI: Chris Bildfell, U of Victoria
CoI: Jason Kezwer, U of Victoria
CoI: Jean-Paul Kneib, Ecole Polytechnique Federale de Lausanne
CoI: Raphael Gavazzi, Institut d'Astrophysique de Paris
CoI: Marceau Limousin, Laboratoire d'Astrophysique de Marseille
CoI: Eric Jullo, Laboratoire d'Astrophysique de Marseille
CoI: Henk Hoekstra, University of Leiden
CoI: Yen-Ting Lin, AISAA
CoI: Bau-Ching Hsieh, AISAA

Title: Spectroscopy of lensed and intracluster supernovae at intermediate redshift

Abstract: We propose for Gemini GMOS ToO time to spectroscopically confirm and monitor 2-5 candidate intracluster and gravitationally lensed supernovae (SNe) from our CFHT+Megacam Survey at Intermediate Redshifts for Cluster and Lensed Supernovae (SIRCLS). With SIRCLS, we are searching 100 massive strong lensing galaxy clusters at 0.3<z<0.5 with monthly cadence to find SNe in cluster red sequence members, the intracluster stellar population, and background lensed galaxies. Intracluster and lensed SNe discoveries are rare and profitable, but without spectra their scientific potential cannot be fulfilled. These GMOS spectra will rule out contaminants, classify the SNe, and lead to the realization of our science goals: 1) to use our hostless intracluster SNe to constrain the fraction of intracluster light at z 0.4 and compare it with low redshift measurements, and 2) exploit the power of gravitational magnification to study in rare detail a sample of high-redshift supernovae and their host galaxies.


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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