Saturday, 24 June 2017

NEWS ALERT: bright supernova discovered near Gamma Scuti


A Nova alert has been issued by astronomers, it lies in the constellation of Scutum close to gamma Scuti

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
Distributed as an Instant Email Notice Novae
Credential Certification: Krzysztof Stanek (

Subjects: Optical, Nova

Referred to by ATel #: 10524, 10527

During the ongoing All Sky Automated Survey for Supernovae (ASAS-SN, Shappee 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 (CASSACA).

ASAS-SN Sky Patrol Light Curve of ASASSN-17ib

Post a Comment