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An Intensive HST Survey for z>1 Supernovae by Targeting Galaxy Clusters

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arxiv 0908.3928 v1 pith:FAQTBSUO submitted 2009-08-27 astro-ph.CO

An Intensive HST Survey for z>1 Supernovae by Targeting Galaxy Clusters

K.S. Dawson , G. Aldering , R. Amanullah , K. Barbary , L. F. Barrientos , M. Brodwin , N. Connolly , A. Dey
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M. Doi M. Donahue P. Eisenhardt E. Ellingson L. Faccioli V. Fadeyev H. K. Fakhouri A. S. Fruchter D. G. Gilbank M. D. Gladders G. Goldhaber A. H. Gonzalez A. Goobar A. Gude T. Hattori H. Hoekstra X. Huang Y. Ihara B. T. Jannuzi D. Johnston K. Kashikawa B. Koester K. Konishi M. Kowalski C. Lidman E. V. Linder L. Lubin J. Meyers T. Morokuma F. Munshi C. Mullis T. Oda N. Panagia S. Perlmutter M. Postman T. Pritchard J. Rhodes P. Rosati D. Rubin D. J. Schlegel A. Spadafora S. A. Stanford V. Stanishev D. Stern M. Strovink N. Suzuki N. Takanashi K. Tokita M. Wagner L. Wang N. Yasuda H. K. C. Yee (Supernova Cosmology Project)
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keywords galaxyclusterssurveyhighimprovementredshiftstrategysupernovae
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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 three 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 a 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.

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Cited by 1 Pith paper

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    Quintessence potential decreases monotonically with redshift while kinetic energy crosses zero near z=1, with negative values at intermediate redshifts being statistical artifacts from derivative reconstruction.