ASAS-SN Discovery of A Probable Supernova in Irregular Dwarf Galaxy PGC 043070
ATel #6377; J. M. Fernandez (Pontificia Universidad Catolica), S. Kiyota (Variable Star Observers League in Japan), J. Brimacombe (Coral Towers Observatory), K. Z. Stanek, T. W.-S. Holoien, B. J. Shappee, A. B. Davis, C. S. Kochanek, J. Jencson, U. Basu, J. F. Beacom (Ohio State), J. L. Prieto (Diego Portales), D. Bersier (LJMU), D. Szczygiel, G. Pojmanski (Warsaw University Observatory), E. Conseil (Association Francaise des Observateurs d'Etoiles Variables), I. Cruz (Cruz Observatory), L. A.G. Monard (Klein Karoo Observatory), J. Nicolas (Vallauris, France), W. Wiethoff (University of Minnesota, Duluth)
on 8 Aug 2014; 15:28 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Krzysztof Stanek (stanek.32@osu.edu)
Subjects: Optical, Supernovae
Referred to by ATel #: 6392
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 PGC 043070:
Object RA (J2000) DEC (J2000) Disc. UT Date Disc. V mag
ASASSN-14fd 12:46:14.768 -40:48:52.53 2014-08-07.98 16.6
ASASSN-14fd was discovered in images obtained on UT 2014-08-07.98
at V~16.6 mag. We do not detect (V>17.15) the object in images taken
on UT 2014-08-04.00 and before. Images obtained by J. Fernandez on UT
2014-08-08.06 using 0.4-m telescope at PUC Observatory at Hacienda
Santa Martina, by S. Kiyota on UT 2014-08-08.35 using a 0.7-m CDK
astrograph at the ITelescope.NET site at Siding Springs Observatory,
and by J. Brimacombe on UT 2014-08-08.38 with the RCOS 41-cm telescope
near Siding Spring 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 circle has a radius of 3" and is
centered on the position of the transient derived from the S. Kiyota
image.
The ASAS-SN position of ASASSN-14fd is approximately 6" from the
nominal center of an irregular dwarf galaxy PGC 043070 (z=0.015367,
d=67.9 Mpc, via NED), giving an absolute V-band magnitude of
approximately -17.9 (m-M=34.16, A_V=0.3). 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.