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ASAS-SN Discovery of A Probable Supernova in IC 0299

ATel #6802; S. Kiyota (Variable Star Observers League in Japan), T. W.-S. Holoien, K. Z. Stanek, C. S. Kochanek, A. B. Davis, G. Simonian, U. Basu, 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), J. Brimacombe (Coral Towers Observatory), D. Szczygiel, G. Pojmanski (Warsaw University Observatory), E. Conseil (Association Francaise des Observateurs d'Etoiles Variables), J. Nicolas (Groupe SNAUDE, France)
on 11 Dec 2014; 03:38 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Thomas Holoien (tholoien@astronomy.ohio-state.edu)

Subjects: Optical, Supernovae, Transient

Referred to by ATel #: 6804

During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN or "Assassin"), using data from the quadruple 14-cm "Brutus" telescope in Haleakala, Hawaii, we discovered a new transient source, most likely a supernova, in the galaxy IC 0299:

Object       RA (J2000)     DEC (J2000)      Disc. UT Date   Disc. V mag 
ASASSN-14lt  03:11:02.54   -13:06:38.76      2014-12-10.37      16.5 

ASASSN-14lt was discovered in images obtained on UT 2014-12-10.37 at V~16.5 mag. We also detect the object in images obtained on UT 2014-12-09.37 (V~16.5). We do not detect (V>16.8) the object in images taken on UT 2014-12-08.35 and before. Images obtained by S. Kiyota on UT 2014-12-10.95 using a 0.43m CDK + STL-11000M at the ITelescope.NET site at Nerpio, Spain and on UT 2014-12-11.13 with the LCOGT 1-m robotic telescope at Siding Springs Observatory confirm the discovery of the transient. This figure shows the archival DSS image of the host (left) and the S. Kiyota confirmation image (right). The red arrow indicaes the position of the transient in the S. Kiyota image.

The position of ASASSN-14lt is approximately 6.7" South and 0.2" West from the center of the galaxy IC 0299 (z=0.032046, d=132 Mpc, via NED), giving an absolute V-band magnitude of approximately -19.3 (m-M=35.61, A_V=0.153). 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.