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We present a measurement of the rate of type Ia supernovae (SNe Ia) from the first of three seasons of data from the SDSS-II Supernova Survey. For this measurement, we include 17 SNe Ia at redshift z0. 12. Assuming a flat cosmology with ₘ = 0. 3=1-_, we find a volumetric SN Ia rate of 2. 93^+0. 17-₀. ₀₄ (systematic) ^+0. 90-₀. ₇₁ (statistical) 10^-5 SNe Mpc^-3 h₇₀³ year^-1, at a volume-weighted mean redshift of 0. 09. This result is consistent with previous measurements of the SN Ia rate in a similar redshift range. The systematic errors are well controlled, resulting in the most precise measurement of the SN Ia rate in this redshift range. We use a maximum likelihood method to fit SN rate models to the SDSS-II Supernova Survey data in combination with other rate measurements, thereby constraining models for the redshift-evolution of the SN Ia rate. Fitting the combined data to a simple power-law evolution of the volumetric SN Ia rate, rV (1+z) ^, we obtain a value of = 1. 5 0. 6, i. e. the SN Ia rate is determined to be an increasing function of redshift at the 2. 5 level. Fitting the results to a model in which the volumetric SN rate, rV=A (t) +B (t), where (t) is the stellar mass density and (t) is the star formation rate, we find A = (2. 8 1. 2) 10^-14 SNe M_^-1 year^-1, B = (9. 3^+3. 4-₃. ₁) 10^-4 SNe M_^-1.
Dilday et al. (Sun,) studied this question.