ATLAS discovery of a probable SN in 2MASX J17093078+2136344 (ATLAS16bcb)
ATel #9126; J. Tonry, L. Denneau, B. Stalder, A. Heinze, A. Sherstyuk (IfA, University of Hawaii), A. Rest (STScI), K. W. Smith, S. J. Smartt (Queen's University Belfast)
on 8 Jun 2016; 15:51 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Stephen Smartt (s.smartt@qub.ac.uk)
Subjects: Optical, Supernovae
ATLAS is a twin 0.5m telescope system on
Haleakala and Mauna Loa. The first unit is operational on Haleakala and is
robotically surveying the sky. Two filters are used, cyan and orange
(denoted c and o, all mags in AB system), more information is on http://www.fallingstar.com. While carrying out the primary mission for NEOs,
we search for and publicly report stationary transients (see
Tonry et al. ATel #8680).
We report a new transient source, most likely a supernova in the galaxy
2MASX J17093078+2136344.
We discovered ATLAS16bcb (to be registered on IAU TNS)
on
MJD 57542.43 == 3 June 2016,
at
m_c = 18.5 +/- 0.1.
ATLAS16bcb
is offset 6.6 arcsec
from
2MASX J17093078+2136344
which is at
z= 0.048703 or d=200Mpc
(from NED). Implying an absolute magnitude of
M = -17.7 at discovery
(assuming
m-M = 36.6
and
A_g = 0.19
).
A summary of the transient's properties are summarised below.
Follow up observations are encouraged.
ATLAS Name | RA (J2000) | Dec (J2000) | Disc. Date | Disc Mag | z
ATLAS16bcb | 17:09:30.31 | +21:36:29.7 | 57542.43 | 18.61 c | 0.048703
Obs. UT Date AB mag
57542.43 18.5 +/- 0.1
57546.43 17.85 +/- 0.05
