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ASAS-SN Discovery of A Probable Supernova in 2MASX J07353554-6246099

ATel #6594; 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), J. Brimacombe (Coral Towers Observatory), D. Szczygiel, G. Pojmanski (Warsaw University Observatory), E. Conseil (Association Francaise des Observateurs d'Etoiles Variables), I. Cruz (Cruz Observatory), J. Hissong (Columbus Astronomical Society), L. A.G. Monard (Klein Karoo Observatory), B. Nicholls (Mt. Vernon Obs., New Zealand), J. Nicolas (Groupe SNAUDE, France), W. Wiethoff (University of Minnesota, Duluth)
on 19 Oct 2014; 16:19 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Thomas Holoien (tholoien@astronomy.ohio-state.edu)

Subjects: Optical, Supernovae

During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN or "Assassin"), using data from the double 14-cm "Cassius" telescope in Cerro Tololo, Chile, we discovered a new transient source, most likely a supernova, in the galaxy 2MASX J07353554-6246099:

Object       RA (J2000)     DEC (J2000)      Disc. UT Date   Disc. V mag 
ASASSN-14jc  07:35:35.288   -62:46:12.64     2014-10-19.34    16.3 

ASASSN-14jc was discovered in images obtained on UT 2014-10-19.34 at V~16.3 mag. We also marginally detect the object in images obtained on UT 2014-10-13.33 (V~16.9), but we do not detect (V>16.6) the object in images taken on UT 2014-10-12.32 and before. An image obtained by S. Kiyota on UT 2014-10-19.62 using a 0.5m CDK + FLI PL-6303E at the ITelescope.NET site at Siding Springs Observatory confirms 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 indicates the position of the transient in the S. Kiyota image.

The position of ASASSN-14jc is approximately 2.6" South and 1.7" West from the center of the galaxy 2MASX J07353554-6246099 (z=0.011325, d=48.9 Mpc, via NED), giving an absolute V-band magnitude of approximately -17.6 (m-M=33.44, A_V=0.431). 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.