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ASAS-SN Discovery of A Probable Supernova in (Yet Another) Galaxy With Unknown Redshift

ATel #6830; K. Z. Stanek (Ohio State), J. Brimacombe (Coral Towers Observatory), T. W.-S. Holoien, C. S. Kochanek, A. B. Davis, G. Simonian, U. Basu, N. Goss, J. F. Beacom (Ohio State), B. J. Shappee (Hubble Fellow, Carnegie Observatories), J. L. Prieto (Diego Portales; MAS), D. Bersier (LJMU), Subo Dong (KIAA-PKU), P. R. Wozniak (LANL), D. Szczygiel, G. Pojmanski (Warsaw University Observatory), E. Conseil (Association Francaise des Observateurs d'Etoiles Variables), S. Kiyota (Variable Star Observers League in Japan), B. Nicholls (Mt. Vernon Obs., New Zealand), J. Nicolas (Groupe SNAUDE, France)
on 16 Dec 2014; 18:28 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Krzysztof Stanek (stanek.32@osu.edu)

Subjects: Optical, Supernovae, Transient

Referred to by ATel #: 6882

During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN or "Assassin"), using data from the double 14-cm "Cassius" telescope in CTIO, Chile, we discovered a new transient, likely a supernova, towards the galaxy ESO 113- G 047:

Object       RA (J2000)     DEC (J2000)      Disc. UT Date   Disc. V mag  
ASASSN-14me  1:26:40.216    -57:59:49.87     2014-12-16.08    16.5 
ASASSN-14me was discovered in images obtained on UT 2014-12-16.08 at V~16.5 mag. We do not detect (V>17.2) the object in images taken on UT 2014-12-13.09 and before. Images obtained on UT 2014-12-16.168 with the LCOGT 1-m robotic telescope at CTIO and on UT 2014-12-16.60 with the 43-cm telescope at Savannah Skies Observatory confirm the discovery of the transient. This figure shows the archival DSS image of the host (left) and the LCOGT confirmation image (right). The red circle has a radius of 3" and is centered on the position of the transient in the LCOGT image.

The position of ASASSN-14me is approximately 1.1" from the center of the galaxy ESO 113-G 047, a galaxy with no redshift listed in NED. This is the third ASAS-SN supernova candidate in a row (ATel #6824, #6809) discovered in a galaxy with unknown redshift. Follow-up observations are encouraged.

We thank LCOGT and its staff for their continued support of ASAS-SN. For more information about the ASAS-SN project, see the ASAS-SN Homepage and the list of all ASAS-SN transients.