Okumura, Jun E. and Ihara, Yutaka and Doi, Mamoru and Morokuma, Tomoki and Pain, Reynald and Totani, Tomonori and Barbary, Kyle and Takanashi, Naohiro and Yasuda, Naoki and Aldering, Greg and Dawson, Kyle and Goldhaber, Gerson and Hook, Isobel and Lidman, Chris and Perlmutter, Saul and Spadafora, Anthony and Suzuki, Nao and Wang, Lifan (2014) The Type Ia supernovae rate with Subaru/XMM-Newton Deep Survey. Publications of the Astronomical Society of Japan, 66 (2): 49. ISSN 0004-6264
Full text not available from this repository.Abstract
We present measurements of the rates of high-redshift Type Ia supernovae derived from the Subaru/XMM-Newton Deep Survey (SXDS). We carried out repeated deep imaging observations with Suprime-Cam on the Subaru Telescope, and detected 1040 variable objects over 0.918 deg(2) in the Subaru/XMM-Newton Deep Field. From the imaging observations, light curves in the observed i band are constructed for all objects, and we fit the observed light curves with template light curves. Out of the 1040 variable objects detected by the SXDS, 39 objects over the redshift range 0.2 <z <1.4 are classified as Type Ia supernovae using the light curves. These are among the most distant SN Ia rate measurements to date. We find that the Type Ia supernova rates increase up to z similar to 0.8 and may then flatten at higher redshift. The rates can be fitted by a simple power law, r(V)(z) = r(0)(1 + z)(alpha) with r(0) = 0.20(0.16)(+0.52)(stat.)(0.07)(+0.26)(syst.) x 10(-4) yr(-1) Mpc(-3), and alpha = 2.04(-1.96)(+1.84) (stat.)(-0.86)(+2.11)(syst.).