GCN Circular 18759

SUBJECT: LIGO/Virgo G211117: La Silla - QUEST observations 2015 Dec 28, 29
FROM:  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 has covered th e ~90% confidence 
area for LVC event G21117 between Dec +27 and -13 deg. Analysis is 
ongoing, and further survey observa tions are planned. One target 
(LSQ15bvw) has been detected with high confidence outside the 90% 
confidence region:

LSQ Desig   V-mag    hh:mm:ss   dd:mm:ss        JD
  _________________________(J2000)___________________________
  LSQ15bvw     18.8    02:08:15.97  15:02:52.80 2457385.6006

LSQ15bvw appears as an isolated source not visible in years 2012 and 
2013.  Observations made 2015 Oct 28 and 29 (V mag 19.2 on JD 
2457384.6032 and V mag 18.8 on 2457385.6006) indicate that the object is 
brightening by ~ 0.5 mags per day.


Several other sources have been detected with lower confidence. All 
appear as likely supernova near the center of distant (z>0.01) host 
galaxies :


LSQ Desig   V-mag    hh:mm:ss   dd:mm:ss       JD
  _________________________(J2000)___________________________
LSQ15bvk     19.6    02:33:08.79  18:13:48.41 2457384.6297
LSQ15bvo     20.6    02:38:44.05  21:00:23.35   2457384.5775
LSQ15bvs     18.3    02:20:45.15 11:03:18.58   2457384.6032