The Type Ia supernovae rate with Subaru/XMM-Newton Deep Survey Academic Article uri icon

abstract

  • Abstract We present measurements of the rates of high-redshift TypeIa 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 0.918deg2 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 TypeIa supernovae using the light curves. These are among the most distant SNIa rate measurements to date. We find that the TypeIa supernova rates increase up to z0.8 and may then flatten at higher redshift. The rates can be fitted by a simple power law, rV(z)=r0(1+z) with $r_0=0.20^{+0.52}_{-0.16}$(stat.)$^{+0.26}_{-0.07}$(syst.)104yr1Mpc3, and $alpha =2.04^{+1.84}_{-1.96}$(stat.)$^{+2.11}_{-0.86}$(syst.).

published proceedings

  • PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN

altmetric score

  • 2.6

author list (cited authors)

  • Okumura, J. E., Ihara, Y., Doi, M., Morokuma, T., Pain, R., Totani, T., ... Wang, L.

citation count

  • 15

complete list of authors

  • Okumura, Jun E||Ihara, Yutaka||Doi, Mamoru||Morokuma, Tomoki||Pain, Reynald||Totani, Tomonori||Barbary, Kyle||Takanashi, Naohiro||Yasuda, Naoki||Aldering, Greg||Dawson, Kyle||Goldhaber, Gerson||Hook, Isobel||Lidman, Chris||Perlmutter, Saul||Spadafora, Anthony||Suzuki, Nao||Wang, Lifan

publication date

  • April 2014