Graur, O. and Poznanski, D. and Maoz, D. and Yasuda, N. and Totani, T. and Fukugita, M. and Filippenko, A. V. and Foley, R. J. and Silverman, J. M. and Gal-Yam, A. and Horesh, A. and Jannuzi, B. T. (2011) Supernovae in the Subaru Deep Field: the rate and delay-time distribution of Type Ia supernovae out to redshift 2. Monthly Notices of the Royal Astronomical Society, 417 (2). pp. 916-940. ISSN 0035-8711 http://resolver.caltech.edu/CaltechAUTHORS:20120104-134502070
Full text not available from this repository.
Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20120104-134502070
The Type Ia supernova (SN Ia) rate, when compared to the cosmic star formation history (SFH), can be used to derive the delay-time distribution (DTD; the hypothetical SN Ia rate versus time following a brief burst of star formation) of SNe Ia, which can distinguish among progenitor models. We present the results of a supernova (SN) survey in the Subaru Deep Field (SDF). Over a period of 3 years, we have observed the SDF on four independent epochs with Suprime-Cam on the Subaru 8.2-m telescope, with two nights of exposure per epoch, in the R, i′and z′ bands. We have discovered 150 SNe out to redshift z≈ 2. Using 11 photometric bands from the observer-frame far-ultraviolet to the near-infrared, we derive photometric redshifts for the SN host galaxies (for 24 we also have spectroscopic redshifts). This information is combined with the SN photometry to determine the type and redshift distribution of the SN sample. Our final sample includes 28 SNe Ia in the range 1.0 < z < 1.5 and 10 in the range 1.5 < z < 2.0. As our survey is largely insensitive to core-collapse SNe (CC SNe) at z > 1, most of the events found in this range are likely SNe Ia. Our SN Ia rate measurements are consistent with those derived from the Hubble Space Telescope (HST) Great Observatories Origins Deep Survey (GOODS) sample, but the overall uncertainty of our 1.5 < z < 2.0 measurement is a factor of 2 smaller, of 35–50 per cent. Based on this sample, we find that the SN Ia rate evolution levels off at 1.0 < z < 2.0, but shows no sign of declining. Combining our SN Ia rate measurements and those from the literature, and comparing to a wide range of possible SFHs, the best-fitting DTD (with a reduced χ^2= 0.7) is a power law of the form Ψ(t) ∝t^β, with index β=−1.1 ± 0.1 (statistical) ±0.17 (systematic). This result is consistent with other recent DTD measurements at various redshifts and environments, and is in agreement with a generic prediction of the double-degenerate progenitor scenario for SNe Ia. Most single-degenerate models predict different DTDs. By combining the contribution from CC SNe, based on the wide range of SFHs, with that from SNe Ia, calculated with the best-fitting DTD, we predict that the mean present-day cosmic iron abundance is in the range Z_(Fe)= (0.09–0.37) Z_(Fe,⊙). We further predict that the high-z SN searches now beginning with HST will discover 2–11 SNe Ia at z > 2.
|Additional Information:||© 2011 The Authors. Monthly Notices of the Royal Astronomical Society © 2011 RAS. Accepted 2011 June 20. Received 2011 June 20; in original form 2011 January 30. Article first published online: 19 Sep 2011. We thank Mamoru Doi for his contributions to this project, Robert Feldmann, Suzanne Hawley, Eric Hilton, Weidong Li and Lucianne Walkowicz for helpful discussions and comments, and Masao Hayashi, Nobunari Kashikawa, Chun Ly, Matt Malkan and Tomoki Morokuma for sharing their data. The referee is thanked for many thoughtful comments that improved the presentation. OG thanks Joshua Bloom for hosting him during a month-long visit to the University of California, Berkeley. This work was based on data collected at the Subaru Telescope, which is operated by the National Astronomical Observatory of Japan. Additional data presented here were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration; the Observatory was made possible by the generous financial support of the W. M. Keck Foundation. The authors wish to recognize and acknowledge the very significant cultural role and reverence that the summit of Mauna Kea has always had within the indigenous Hawaiian community. We are most fortunate to have the opportunity to conduct observations from this mountain. This research has made use of NASA’s Astrophysics Data System (ADS) Bibliographic Services. DM acknowledges support by a grant from the Israel Science Foundation (ISF). DP is supported by an Einstein Fellowship, and by the US Department of Energy Scientific Discovery through Advanced Computing (SciDAC) programme under contract DE-FG02-06ER06-04. AVF is grateful for the financial support of NSF grant AST-0908886, the TABASGO Foundation and Department of Energy grant DE-FG0-08ER41563. RJF is supported by a Clay fellowship. AG is supported by an FP7/Marie Curie IRG fellowship and a grant from the ISF.|
|Subject Keywords:||Methods: observational; surveys; supernovae: general; galaxies: distances and redshifts|
|Official Citation:||Graur, O., Poznanski, D., Maoz, D., Yasuda, N., Totani, T., Fukugita, M., Filippenko, A. V., Foley, R. J., Silverman, J. M., Gal-Yam, A., Horesh, A. and Jannuzi, B. T. (2011), Supernovae in the Subaru Deep Field: the rate and delay-time distribution of Type Ia supernovae out to redshift 2. Monthly Notices of the Royal Astronomical Society, 417: 916–940. doi: 10.1111/j.1365-2966.2011.19287.x|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||04 Jan 2012 22:11|
|Last Modified:||04 Jan 2012 22:11|
Repository Staff Only: item control page