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HST MCT SN Discovery

ATel #3451; Steven Rodney (Johns Hopkins University)
on 24 Jun 2011; 15:03 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Steven A. Rodney (rodney@jhu.edu)

Subjects: Optical, Supernovae, Transient

Steven Rodney, Or Graur and Teddy F. Frederiksen, on behalf of the HST Higher-z SN team (PI A. Riess) report the discovery of an optical/near-infrared transient (possible supernova) found in the subtraction images generated from observations taken on May 28 2011 and not detected at any earlier epoch. The observations were taken with HST/WFC3 as part of CLASH: Cluster Lensing and Supernova Survey with Hubble (HST program 12065 , PI M. Postman). The position of the transient is RA = 12:06:08.868, Dec = -8:42:54.73 (J2000.0). The following (Vega) magnitudes are reported: F850LP (z) = 23.06 and F775W (i) = 24.07. The transient is offset 1.7" from a possible host galaxy. The magnitude of this potential host is F850LP = 21.11.

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