Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...183.3801v&link_type=abstract
American Astronomical Society, 183rd AAS Meeting, #38.01; Bulletin of the American Astronomical Society, Vol. 25, p.1347
Astronomy and Astrophysics
Astronomy
Scientific paper
In order to investigate the feasibility of determining the cosmic deceleration parameter from high redshift (z = 0.5->1.5) type Ia supernova photometry alone, a representative time-evolving spectrum is constructed from 19 UV and optical spectra of SN 1992A and SN 1981B. By K-correcting and time-dilating this "spectral surface," we approximate the evolution of light curves and colors with redshift. Assuming that the SN Ia production rate is constant in time and space, we find, for qo = 0.5, that a single 8'times 8' field (as in the Omega Telescope proposal, Pennypacker et al., 1993) has about one SN Ia per year out to z = 1.5. We estimate the observable fraction of these supernovae as a function of limiting magnitude.
Branch David
Vaughan Thomas E.
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