GCN Circular 18800
Subject
LIGO/Virgo G211117: La Silla - QUEST observations 2015 Dec 28 - 30
Date
2016-01-01T19:45:41Z (9 years ago)
From
David Rabinowitz at Yale U <david.rabinowitz@yale.edu>
D. Rabinowitz, C. Baltay, N. Ellman (Yale), P. Nugent (LBNL)
The La Silla-QUEST survey operating the 10-sq-deg QUEST camera on the
1.0m ESO Schmidt at La Silla, Chile is continuing coverage begun 2015
Dec 28 of the ~90% confidence area for LVC event G21117 between Dec +27
and -13 deg. Two new candidates have been detected with high
confidence, verified from observations made Dec 30
LSQ Desig V-mag RA (deg) Dec (deg) JD
__________________________________________________________
LSQ15bwe 19.2 36.509181 17.06122 2457386.6243
LSQ15bwd 17.0 39.661939 16.61666 2457386.6243
LSQ15bwe appears as a likely supernova 0.22 arcmin north-west of galaxy
2MASX J02260249+1703274i. The brightness has not changed significantly
between 2015 Dec 28 and 30, indicating a likely onset prior to the
G21117 event.
LSQ15bdw is coincident with QSO [HB89] 0235+164 which has readshift z =
0.85. The source brightened from V = 18.2 to 17.6 between 2015 Dec 28
and 30 and is 1.5 to 2.0 mags brighter than its appearance in previous
epochs (2012, 2013, 2014).