KAIT Discovery and Robotic Follow-up Observations of a Possible SN Candidate in ESO 561-3 : J07572882-1913395
ATel #7340; WeiKang Zheng and Alexei V. Filippenko (UC Berkeley)
on 3 Apr 2015; 05:56 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Weikang Zheng (zwk@umich.edu)
Subjects: Optical, Supernovae
Referred to by ATel #: 7344
We report the discovery, with the 0.76-m Katzman Automatic Imaging Telescope (KAIT) at Lick Observatory, of a possible new supernova in the nearby galaxy ESO 561-3 (z=0.011882). The new object, dubbed PSN J07572882-1913395 (by the IAU), is located at (J2000.0) coordinates RA = 07:57:28.82, Dec = -19:13:39.5. Following discovery in an unfiltered image obtained at 04:10 UT on 2015 Apr. 03, KAIT autonomously began a sequence of triggered follow-up observations in the U, B, V, R, I, and clear (roughly R) filters beginning only 4 minutes later. Using stars from the USNO-B1 catalog for reference, we measure R~17.5 mag at this time. The target was not detected at this location 5 days earlier on 2015 Mar. 29 with image limiting mag of R~18.0, suggesting this might be a young SN. An finding chart was posted at the following website: http://astro.berkeley.edu/~zwk/findingchart/PSN_J07572882-19133947.jpg
