Bright, High-Amplitude, Young CV Discovered by ASAS-SN

ATel #8042; G. Simonian, C. S. Kochanek, K. Z. Stanek, T. W.-S. Holoien, J. S. Brown, D. Godoy Rivera, U. Basu, J. F. Beacom, T. A. Thompson (Ohio State), B. J. Shappee (Hubble Fellow, Carnegie Observatories), J. L. Prieto (Diego Portales; MAS), D. Bersier (LJMU), Subo Dong, Ping Chen (KIAA-PKU), J. Brimacombe (Coral Towers Observatory), E. Falco (CfA), P. R. Wozniak (LANL), G. Pojmanski (Warsaw University Observatory)
on 11 Sep 2015; 20:46 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Krzysztof Stanek (stanek.32@osu.edu)

Tweet

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:

 
Object        RA (J2000)    DEC (J2000)     Disc. UT Date   Disc. V mag 
ASASSN-15po   00:36:35.826  +21:51:25.75    2015-09-10.52   13.7 

ASASSN-15po was discovered at V=13.7 in "Brutus" images taken on 2015-09-10.52, but not present (V>17.6) in images taken on 2015-09-08.47. At the position of the transient, Vizier reports a match to a faint g=21.6 blue SDSS source.

Given the large amplitude of its outburst, this transient may be a WZ Sge-type dwarf nova. Follow-up observations are encouraged.

We thank LCOGT and its staff for their continued support of ASAS-SN. ASAS-SN is supported by NSF grant AST-1515927, the Mt. Cuba Astronomical Foundation, and the Center for Cosmology and AstroParticle Physics (CCAPP) at OSU. For more information about the ASAS-SN project, see the ASAS-SN Homepage and the list of all ASAS-SN transients.