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Twenty‐Three High‐Redshift Supernovae from the Institute for Astronomy Deep Survey: Doubling the Supernova Sample at<i>z</i>> 0.7
We present photometric and spectroscopic observations of 23 high-redshift supernovae (SNe) spanning a range of z = 0.34-1.03, nine of which are unambiguously classified as Type Ia. These SNe were discovered during the IfA Deep Survey, which began in 2001 September and observed a total of 2.5 deg2 to a …