NOAO >   Observing Info >   Approved Programs >   2002B-0007

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Proposal Information for 2002B-0007


PI: Nicholas B. Suntzeff, CTIO, NOAO, nsuntzeff@noao.edu
Address: Casilla 603, La Serena, Chile

CoI: Brian Schmidt, MSSSO
CoI: Chris Stubbs, University of Washington
CoI: Robert Kirshner, Harvard-Smithsonian Center for Astrophysics
CoI: Alexei V. Filippenko, University of California, Berkeley
CoI: Peter M. Garnavich, Notre Dame University
CoI: Adam G. Riess, Space Telescope Science Institute
CoI: John L. Tonry, University of Hawaii
CoI: R. Chris Smith, CTIO
CoI: Kevin Krisciunas, CTIO
CoI: Mark M. Phillips, Carnegie Observatories, Las Campanas Observatory
CoI: Alejandro Clocchiatti, Universidad Catolica de Chile
CoI: Bruno Leibundgut, European Southern Observatory
CoI: Jason Spyromilio, European Southern Observatory
CoI: Brian Barris, University of Hawaii
CoI: Weidong Li, University of California, Berkeley
CoI: Craig J. Hogan, University of Washington
CoI: Gajus Miknaitis, University of Washington
CoI: Stephen Holland, Notre Dame University
CoI: Saurabh Jha, Harvard-Smithsonian Center for Astrophysics
CoI: Tom Matheson, Harvard-Smithsonian Center for Astrophysics
CoI: Jesper Sollerman, European Southern Observatory
CoI: Peter Challis, Harvard-Smithsonian Center for Astrophysics
CoI: Stephen Pompea, NOAO
CoI: Andrew Becker, Lucent/Bell Labs
CoI: Armin Rest, University of Washington

Title: The w Project: Measuring the Equation of State of the Universe

Abstract: We propose to find and follow ~ 200 Type Ia supernovae with the Mosaic Imager on the Blanco 4-m telescope over a five-year period. This search is designed to find supernovae distributed evenly over the redshift range [0.15, 0.75]. The survey will obtain VRI photometry which we will supplement with zJ photometry and spectra using Keck, MMT, Magellan, Gemini, and the VLT. We aim to answer a simple, but very important, question: is the dark energy of the universe consistent with a cosmological constant (w=-1)? If not, this means the dark energy must be a more general energy field such as ``quintessence.'' This survey should determine w to +/-0.1 (1\sigma). We propose to use the \it other half of the 30 half-nights per year already assigned to the SuperMacho Team. We will exploit the \it same data reduction pipelines already developed for SuperMacho to find SNe and to measure their light curves. By merging the two projects, we can use the same software, hardware, and people for two important investigations of matter and energy in the universe.


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