NOAO >   Observing Info >   Approved Programs >   2001A-0248

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Proposal Information for 2001A-0248


PI: Saul Perlmutter, Lawrence Berkeley National Lab, saul@lbl.gov
Address: One Cyclotron Road, MS 50/232, Berkeley, CA 94720, USA

CoI: Greg Aldering, Lawrence Berkeley National Lab
CoI: Robert Knop, Lawrence Berkeley National Lab
CoI: Isobel Hook, The Royal Observatory, Edinburgh
CoI: Gerson Goldhaber, UC Berkeley
CoI: Peter Nugent, Lawrence Berkeley National Lab
CoI: Alex Conley, UC Berkeley / Lawrence Berkeley National Lab
CoI: Daniel Kasen, UC Berkeley / Lawrence Berkeley National Lab
CoI: Michael Wood-Vasey, UC Berkeley / Lawrence Berkeley National Lab
CoI: Ariel Goobar, University of Stockholm
CoI: Pierre Astier, University of Paris

Title: Cosmology with High-Redshift Type Ia Supernovae

Abstract: The current Type Ia supernova Hubble diagram and CMB observations argue for a flat universe with some form of ``dark energy'' accelerating its expansion. Studies of distant supernovae can probe the expansion history of the universe through our current dark-energy-dominated era back to a matter-dominated era, making them one of the best current methods to study the amount and nature of such dark energy. The CTIO 4-m telescope will reach back in time to find supernovae when the universe was still matter-dominated, extending our understanding of the expansion of the universe and possible evolution of supernovae over time (for which we will use several different tests). The WIYN-SYN telescope will allow us to photometrically follow-up a selection of these supernovae to measure the brightness of these standard candles as a function of redshift. The Gemini NIRI will allow us to obtain crucial data for the very highest-redshift (z \gtrsim 1) supernova whose rest-frame V-band will have been redshifted to our J- band.


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 >   2001A-0248

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