A Pilot Project to Measure Supernova Light Curves at z=0.85

Details A Pilot Project to Measure Supernova Light Curves at z=0.85 A Pilot Project to Measure Supernova Light Curves at z=0.85

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999noao.prop..279s&link_type=abstract

NOAO Proposal ID #1999A-0279

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Our High-Z Supernova Survey and the rival Supernova Cosmology Project have found that the Type Ia supernovae at z ~ 0.5 are fainter by about 0.25m than expected from an empty Universe. This result points to a Universe that is actually accelerating (q_0 < 0) with a positive cosmological constant. The magnitude difference between these models should peak around z ~ 0.85 which puts the V band at 1(mu)m. We propose to use a redshifted V filter (F980) with CIRIM and tip-tilt to obtain data of a few high-z supernovae that we will discover in January 1999. This pilot project will allow us to determine if we really can follow Type Ia supernovae with ground-based telescopes at this wavelength. If this works, we will start a campaign to find z ~ 0.85 supernovae with the CFHT, and follow them with ground-based CTIO (redshifted) V and HST UB data.

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