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Title: Type-Ia supernova rates to redshift 2.4 from clash: The cluster lensing and supernova survey with Hubble

We present the supernova (SN) sample and Type-Ia SN (SN Ia) rates from the Cluster Lensing And Supernova survey with Hubble (CLASH). Using the Advanced Camera for Surveys and the Wide Field Camera 3 on the Hubble Space Telescope (HST), we have imaged 25 galaxy-cluster fields and parallel fields of non-cluster galaxies. We report a sample of 27 SNe discovered in the parallel fields. Of these SNe, ∼13 are classified as SN Ia candidates, including four SN Ia candidates at redshifts z > 1.2. We measure volumetric SN Ia rates to redshift 1.8 and add the first upper limit on the SN Ia rate in the range 1.8 < z < 2.4. The results are consistent with the rates measured by the HST/GOODS and Subaru Deep Field SN surveys. We model these results together with previous measurements at z < 1 from the literature. The best-fitting SN Ia delay-time distribution (DTD; the distribution of times that elapse between a short burst of star formation and subsequent SN Ia explosions) is a power law with an index of −1.00{sub −0.06(0.10)}{sup +0.06(0.09)} (statistical){sub −0.08}{sup +0.12} (systematic), where the statistical uncertainty is a result of the 68% and 95% (in parentheses) statistical uncertaintiesmore » reported for the various SN Ia rates (from this work and from the literature), and the systematic uncertainty reflects the range of possible cosmic star-formation histories. We also test DTD models produced by an assortment of published binary population synthesis (BPS) simulations. The shapes of all BPS double-degenerate DTDs are consistent with the volumetric SN Ia measurements, when the DTD models are scaled up by factors of 3-9. In contrast, all BPS single-degenerate DTDs are ruled out by the measurements at >99% significance level.« less
Authors:
; ; ;  [1] ;  [2] ; ; ; ;  [3] ; ; ; ; ; ;  [4] ; ;  [5] ;  [6] ; ;  [7] more »; « less
  1. Department of Physics and Astronomy, The Johns Hopkins University, Baltimore, MD 21218 (United States)
  2. School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv 69978 (Israel)
  3. Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854 (United States)
  4. Space Telescope Science Institute, Baltimore, MD 21218 (United States)
  5. Instituto de Astrofísica de Andalucía (CSIC), E-18080 Granada (Spain)
  6. Institut de Ciencies de l'Espai, (IEEC-CSIC), E-08193 Bellaterra (Barcelona) (Spain)
  7. INAF-Osservatorio Astronomico di Trieste, I-34143 Trieste (Italy)
Publication Date:
OSTI Identifier:
22351369
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 783; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DISTRIBUTION; EXPLOSIONS; GALAXY CLUSTERS; GRAVITATIONAL LENSES; RED SHIFT; SIMULATION; SUPERNOVAE; SYNTHESIS; TELESCOPES; TIME DELAY; WHITE DWARF STARS