A supernova at Z = 0.458 and implications for measuring the cosmological deceleration
The Astrophysical Journal1995Vol. 440, pp. L41–L41
Citations Over TimeTop 10% of 1995 papers
S. Perlmutter, C. R. Pennypacker, G. Goldhaber, A. Goobar, Rolf Müller, Heidi Jo Newberg, J. Desai, A. G. Kim, M. Y. Kim, I. Small, B. J. Boyle, C. S. Crawford, R. G. McMahon, P. Bunclark, D. Carter, M. J. Irwin, R. Terlevich, Richard S. Ellis, Karl Glazebrook, W. J. Couch, J. R. Mould, Todd A. Small, Roberto Abraham
Abstract
We have begun a program to discover high-redshift supernovae (z ~ 0.25-0.5) and study them with follow-up photometry and spectroscopy. We report here our first discovery, a supernova at z = 0.458. The photometry for this supernova closely matches the light curve calculated for this redshift from the template of well-observed nearby Type Ia supernovae. We discuss the measurement of the deceleration parameter q_0_ using such high-redshift supernovae and give the best fit value assuming this one supernova is a normal, unextincted Type Ia. We describe the main sources of error in such a measurement of q_0_ and ways to reduce these errors.
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