作者: A. Gal-Yam , D. Poznanski , D. Poznanski , M. Fukugita , A. V. Filippenko
DOI: 10.1111/J.1365-2966.2011.19287.X
关键词:
摘要: The Type Ia supernova (SN Ia) rate, when compared to the cosmic star formation history (SFH), can be used derive delay-time distribution (DTD; hypothetical SN rate versus time following a brief burst of formation) SNe Ia, which distinguish among progenitor models. We present results (SN) survey in Subaru Deep Field (SDF). Over period 3 years, we have observed SDF on four independent epochs with Suprime-Cam 8.2-m telescope, two nights exposure per epoch, R, i′and z′ bands. discovered 150 out redshift z≈ 2. Using 11 photometric bands from observer-frame far-ultraviolet near-infrared, redshifts for host galaxies (for 24 also spectroscopic redshifts). This information is combined photometry determine type and sample. Our final sample includes 28 range 1.0 1, most events found this are likely Ia. measurements consistent those derived Hubble Space Telescope (HST) Great Observatories Origins Survey (GOODS) sample, but overall uncertainty our 1.5