We present a new survey strategy to discover and study high-redshift Type Ia supernovae (SNe Ia) using the Hubble Space Telescope (HST). By targeting massive galaxy clusters at 0.9 < z < 1.5, we obtain a twofold improvement in the efficiency of finding SNe compared to an HST field survey and a factor of 3 improvement in the total yield of SN detections in relatively dust-free red-sequence galaxies. In total, sixteen SNe were discovered at z > 0.95, nine of which were in galaxy clusters. This strategy provides an SN sample that can be used to decouple the effects of host-galaxy extinction and intrinsic color in high-redshift SNe, thereby reducing one of the largest systematic uncertainties in SN cosmology.

AN INTENSIVE HUBBLE SPACE TELESCOPE* SURVEY FOR z > 1 TYPE Ia SUPERNOVAE BY TARGETING GALAXY CLUSTERS

ROSATI, Piero;
2009

Abstract

We present a new survey strategy to discover and study high-redshift Type Ia supernovae (SNe Ia) using the Hubble Space Telescope (HST). By targeting massive galaxy clusters at 0.9 < z < 1.5, we obtain a twofold improvement in the efficiency of finding SNe compared to an HST field survey and a factor of 3 improvement in the total yield of SN detections in relatively dust-free red-sequence galaxies. In total, sixteen SNe were discovered at z > 0.95, nine of which were in galaxy clusters. This strategy provides an SN sample that can be used to decouple the effects of host-galaxy extinction and intrinsic color in high-redshift SNe, thereby reducing one of the largest systematic uncertainties in SN cosmology.
Dawson, Ks; Aldering, G; Amanullah, R; Barbary, K; Barrientos, Lf; Brodwin, M; Connolly, N; Dey, A; Doi, M; Donahue, M; Eisenhardt, P; Ellingson, E; Faccioli, L; Fadeyev, V; Fakhouri, Hk; Fruchter, As; Gilbank, Dg; Gladders, Md; Goldhaber, G; Gonzalez, Ah; Goobar, A; Gude, A; Hattori, T; Hoekstra, H; Huang, X; Ihara, Y; Jannuzi, Bt; Johnston, D; Kashikawa, K; Koester, B; Konishi, K; Kowalski, M; Lidman, C; Linder, Ev; Lubin, L; Meyers, J; Morokuma, T; Munshi, F; Mullis, C; Oda, T; Panagia, N; Perlmutter, S; Postman, M; Pritchard, T; Rhodes, J; Rosati, Piero; Rubin, D; Schlegel, Dj; Spadafora, A; Stanford, Sa; Stanishev, V; Stern, D; Strovink, M; Suzuki, N; Takanashi, N; Tokita, K; Wagner, M; Wang, L; Yasuda, N; Yee, Hkc
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11392/1853975
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