作者
N Suzuki, D Rubin, C Lidman, G Aldering, R Amanullah, K Barbary, LF Barrientos, J Botyanszki, M Brodwin, N Connolly, KS Dawson, A Dey, M Doi, M Donahue, S Deustua, P Eisenhardt, E Ellingson, L Faccioli, V Fadeyev, HK Fakhouri, AS Fruchter, DG Gilbank, MD Gladders, G Goldhaber, AH Gonzalez, A Goobar, A Gude, T Hattori, H Hoekstra, E Hsiao, X Huang, Y Ihara, MJ Jee, D Johnston, N Kashikawa, B Koester, K Konishi, M Kowalski, EV Linder, L Lubin, J Melbourne, J Meyers, T Morokuma, F Munshi, C Mullis, T Oda, N Panagia, S Perlmutter, M Postman, T Pritchard, J Rhodes, P Ripoche, P Rosati, DJ Schlegel, A Spadafora, SA Stanford, V Stanishev, D Stern, M Strovink, N Takanashi, K Tokita, M Wagner, L Wang, N Yasuda, HKC Yee, Supernova Cosmology Project
发表日期
2012/1/27
期刊
The Astrophysical Journal
卷号
746
期号
1
页码范围
85
出版商
IOP Publishing
简介
We present Advanced Camera for Surveys, NICMOS, and Keck adaptive-optics-assisted photometry of 20 Type Ia supernovae (SNe Ia) from the Hubble Space Telescope (HST) Cluster Supernova Survey. The SNe Ia were discovered over the redshift interval 0.623< z< 1.415. Of these SNe Ia, 14 pass our strict selection cuts and are used in combination with the world's sample of SNe Ia to derive the best current constraints on dark energy. Of our new SNe Ia, 10 are beyond redshift z= 1, thereby nearly doubling the statistical weight of HST-discovered SNe Ia beyond this redshift. Our detailed analysis corrects for the recently identified correlation between SN Ia luminosity and host galaxy mass and corrects the NICMOS zero point at the count rates appropriate for very distant SNe Ia. Adding these SNe improves the best combined constraint on dark-energy density, ρ DE (z), at redshifts 1.0< z< 1.6 by 18%(including …
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