Discovery of a Supernova in HST-ACS Imaging from CLASH
ATel #4124; S. A. Rodney (JHU), T. Frederiksen (Dark Cosmology Centre), and T. Holoien (Rutgers University) on behalf of the CANDELS+CLASH SN Team
on 24 May 2012; 02:23 UT
Credential Certification: Steven A. Rodney (rodney@jhu.edu)
Subjects: Infra-Red, Optical, Supernovae
We report the discovery of a Supernova (SN) in Hubble Space Telescope Imaging. The SN was found in subtraction images generated from observations taken on May 17.4. It was not detected in observations taken on April 21.2 or in any earlier epoch. The observations were taken with the Hubble Space Telescope ACS-WFC as part of CLASH: the Cluster Lensing and Supernova Survey with Hubble (HST program 12065 , PI M. Postman). The position of the transient is RA = 08:00:42.787, Dec = +36:07:13.85 (J2000.0). The following (Vega) magnitudes are reported: F850LP = 23.24 +/- 0.04; F775W = 24.36 +/- 0.09. The SN is offset 1.7" from its likely host galaxy. The magnitude of the host is SDSS_u = 21.90 +/- 0.30; SDSS_r = 20.06 +/- 0.04; SDSS_z = 18.86 +/- 0.08. The photometric redshift of the host is z = 0.495 +/- 0.032.
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