ASAS-SN Discovery of a Possible Galactic Nova ASASSN-17ib on the Rise
ATel #10523; 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), Subo Dong (KIAA-PKU)
on 23 Jun 2017; 16:20 UT
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During the ongoing All Sky Automated Survey for SuperNovae (ASAS-SN,
et al. 2014), using data from the quadruple 14-cm "Brutus"
telescope in Haleakala, Hawaii, we detect a bright, new transient
source, possibly a classical nova (could also be a bright CV), near
the Galactic plane
Object RA (J2000) DEC (J2000) Gal l (deg) Gal b (deg) Disc. UT Date Disc. V mag
ASASSN-17ib 18:31:45.918 -14:18:55.57 17.969 -2.232 2017-06-23.47 12.5
ASASSN-17ib was discovered in images obtained on UT 2017-06-23.47 at
V~12.5, and it is also detected in several earlier epochs, starting at
UT 2017-06-19.41 at V~14.7. We do not detect (V>17.1) this object in
subtracted images taken on UT 2017-06-13.21 and before.
Using newly released ASAS-SN Sky
Patrol light curve interface (Kochanek et al. 2017, PASP,
submitted), we have retrieved aperture photometry time series at the
location of ASASSN-17ib in the last 20 days, and the resulting light
curve can be seen here.
No previous outbursts are detected at the position of ASASSN-17ib
since ASAS-SN started observing this location in February 2015.
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
ASAS-SN Sky Patrol Light Curve of ASASSN-17ib