ASAS-SN Discovery of a Possible Galactic Nova ASASSN-17gw on the Rise
ATel #10436; K. Z. Stanek, C. S. Kochanek (OSU), L. Chomiuk, J. Strader (MSU), J. S. Brown, T. W.-S. Holoien, J. V. Shields, T. A. Thompson (OSU), B. J. Shappee (Hubble Fellow, Carnegie Observatories), J. L. Prieto (Diego Portales; MAS), D. Bersier (LJMU), Subo Dong, S. Bose, Ping Chen (KIAA-PKU), J. Brimacombe (Coral Towers Observatory)
on 29 May 2017; 15:29 UT
Distributed as an Instant Email Notice Novae
Credential Certification: Krzysztof Stanek (stanek.32@osu.edu)
During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN: Shappee et al. 2014), using data from the quadruple 14-cm "Cassius" telescope
in CTIO, Chile, we detect a bright, new transient source, possibly
a classical nova (could also be a bright CV), near the Galactic center
Object RA (J2000) DEC (J2000) Gal l (deg) Gal b (deg) Disc. UT Date Disc. V mag
ASASSN-17gw 18:24:40.917 -30:13:58.95 2.998 -8.056 2017-05-29.21 13.7
ASASSN-17gw was discovered in images obtained on UT 2017-05-29.21 at
V~13.7, and it is also detected on 2017-05-28.29 at V~15.2. We do not
detect (V>17.1) this object in subtracted images taken on UT
2017-05-22.36 and before. No previous outbursts are detected at this
location since ASAS-SN started observing this field in March
2016.
Follow-up observations, especially spectroscopy, are strongly encouraged.
We thank Las Cumbres Observatory and its staff for their continued
support of ASAS-SN. ASAS-SN is funded in part by the Gordon and Betty
Moore Foundation through grant GBMF5490 to the Ohio State University,
NSF grant AST-1515927, the Mt. Cuba Astronomical Foundation, the
Center for Cosmology and AstroParticle Physics (CCAPP) at OSU, and the
Chinese Academy of Sciences South America Center for Astronomy
(CASSACA).
