2002/05/28 by R. Pain, S. Fabbro, M. Sullivan +36 · 115 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #COSMIC cancer database #Context (archaeology) #Cosmology #Galaxy #Gamma-ray bursts and supernovae #Neutrino Physics Research #Physics #Redshift #Supernova #Type (biology) #astro-ph
paper · pdf · doi:10.1086/342129
published in The Astrophysical Journal 577(1), 120-132 (IOP Publishing) · 40 pages and 7 figures. Accepted for publication in the Astrophysical Journal. Preprint also available at http://supernova.lbl.gov
arxiv created 2002/05/28 · openalex publication_date 2002/09/20 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/08
We present a measurement of the rate of distant Type Ia supernovae derived using four large subsets of data from the Supernova Cosmology Project. Within this fiducial sample, which surveyed about 12 deg 2 , 38 supernovae were detected at redshifts 0.25-0.85. In a spatially flat cosmological model consistent with the results obtained by the Supernova Cosmology Project, we derive a rest-frame Type Ia supernova rate at a mean redshift z ≃ 0.55 of 1.53 × 10 -4 h 3 Mpc -3 yr -1 or 0.58 h 2 SNu (1 SNu = 1 supernova per century per 10 10 L B ☉ ), where the first uncertainty is statistical and the second includes systematic effects. The dependence of the rate on the assumed cosmological parameters is studied and the redshift dependence of the rate per unit comoving volume is contrasted with local estimates in the context of possible cosmic star formation histories and progenitor models.