Mathematics – Logic
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006noao.prop..386m&link_type=abstract
NOAO Proposal ID #2006B-0386
Mathematics
Logic
Scientific paper
We have been granted time through the NOAO Survey program to find and follow 200 Type Ia supernovae (SNe Ia) with the MOSAIC Imager on the Blanco 4-m over a five-year period (2002B-2006B). Gemini resources, which are not covered by the NOAO Survey program, are needed to provide the critical spectroscopic classifications of the SNe Ia. Our survey is designed to find supernovae distributed optimally over the redshift range [0.15, 0.75]. 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.'' The proposed Gemini GMOS spectra will provide redshifts and sort the SNe Ia from other SNe, hypernovae, and AGNs. In addition, high-quality spectra will allow for studies of evolution of SNe Ia. We will also be able to measure accurate supernova rates as a function of lookback time to almost half the age of the universe. The spectral classifications will be announced immediately to allow other teams to monitor the SNe discovered.
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