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Date and Time of the Query: 2019-07-22 T09:24:29 PDT
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For refcode 1995ApJ...438L..17R:
Retrieve 29 NED objects in this reference.
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Copyright by American Astronomical Society. Reproduced by permission
1995ApJ...438L..17R USING TYPE Ia SUPERNOVA LIGHT CURVE SHAPES TO MEASURE THE HUBBLE CONSTANT ADAM G. RIESS, WILLIAM H. PRESS, AND ROBERT P. KIRSHNER Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 Received 1994 September 6; accepted 1994 October 13 ABSTRACT We present an empirical method that uses visual band light curve shapes (LCSs) to estimate the luminosity of Type Ia supernova (SN Ia's). This method is first applied to a "training set" of eight SN Ia light curves with independent distance estimates to derive the correlation between the LCS and the luminosity. We employ a linear estimation algorithm of the type developed by Rybicki and Press. The result is similar to that obtained by Hamuy et al. with the advantage that LCS produces quantitative error estimates for the distance. We then examine the light curves for 13 SN Ia's to determine the LCS distances of these supernovae. The Hubble diagram constructed using these LCS distances has a remarkably small dispersion of {sigma}_v_ = 0.21 mag. We use the light curve of SN 1972E and the Cepheid distance to NGC 5253 to derive 67 +/- 7 km s^-1^ Mpc^-1^ for the Hubble constant. Subject headings: distance scale - supernovae: general
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