[ Previous | Next | ADS ]

ASAS-SN Discovery of A Probable Supernova in SDSS J171509.41+414836.1

ATel #6426; J. Brimacombe (Coral Towers Observatory), D. Bersier (LJMU), T. W.-S. Holoien, K. Z. Stanek, B. J. Shappee, A. B. Davis, C. S. Kochanek, U. Basu, J. F. Beacom (Ohio State), J. L. Prieto (Diego Portales; MAS), D. Szczygiel, G. Pojmanski (Warsaw University Observatory), E. Conseil (Association Francaise des Observateurs d'Etoiles Variables), S. Kiyota (Variable Star Observers League in Japan), I. Cruz (Cruz Observatory), L. A.G. Monard (Klein Karoo Observatory), J. Nicolas (Groupe SNAUDE, France)
on 28 Aug 2014; 16:10 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 #: 6438

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 SDSS J171509.41+414836.1:

Object       RA (J2000)     DEC (J2000)      Disc. UT Date   Disc. V mag 
ASASSN-14gh  17:15:09.35    +41:48:39.3      2014-08-28.29    16.8 

ASASSN-14gh was discovered in images obtained on UT 2014-08-28.29 at V~16.8 mag. We do not detect (V>17.8) the object in images taken on UT 2014-08-22.33 and before. An image obtained by J. Brimacombe on UT 2014-08-28.51 with the CDK 43-cm telescope at Savannah Skies Observatory confirms the discovery of the transient. This figure shows the archival SDSS g-band image of the host (left) and the J. Brimacombe confirmation image (right). The red circle has a radius of 5.0" and is centered on the position of the transient in the confirmation image.

The ASAS-SN position of ASASSN-14gh is approximately 3.2" North and 2.3" East from the center of the galaxy SDSS J171509.41+414836.1 which, while clearly a galaxy in SDSS images, has no redshift available in NED. Follow-up observations, especially spectroscopy, 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.