NOAO >   Observing Info >   Approved Programs >   2006B-0448

Small NOAO Logo

Proposal Information for 2006B-0448


PI: Louis-Gregory Strolger, Western Kentucky University, louis.strolger@wku.edu
Address: Dept. of Physics and Astronomy, 1906 College Heights Blvd., Bowling Green, Kentucky 42101-1077, USA

CoI: Adam Riess, Space Telescope Science Institute
CoI: Alison Rohde, Western Kentucky University
CoI: Bahram Mobasher, Space Telescope Science Institute
CoI: Michael Carini, Western Kentucky University
CoI: Hubert Lampeitl, Space Telescope Science Institute

Title: Photometric Redshifts of z~1 Supernova Host Galaxies

Abstract: It is anticipated that our HST Cycle 15 program (SHOES, PI: Adam Riess) will be allocated 186 orbits to search for very high redshift (z\ga 1) type Ia supernovae (SNe Ia) and better constrain the nature of dark energy. As this new campaign will concentrate on previously unsurveyed fields, we propose to use the KPNO 4-m+MOSAIC to obtain crucial photometric redshifts for these largely unknown, high-z host galaxies. Photometric redshifts vastly enhance the power of our candidate selection, essentially assuring that no non-SNe Ia could be incorrectly targeted for expensive follow-up programs with HST and KECK. In addition, the photometric redshifts will provide excellent redshift constraints [rms(\frac(Delta) z(1+z))~0.1 - 0.2] for SNe not selected for target of opportunity observations (including non-optimal SNe Ia, and core-collapse SNe). This will allow for a more thorough investigation of the SN rate history (volume rates as a function of redshift) in a crucial redshift range to understanding the nature of SN Ia progenitors. The photometric redshift catalog will become an additional, publicly available resource to the study of galaxy formation and evolution.


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 >   2006B-0448

noaoprop-help@noao.edu

Small NOAO Logo