GCN Circular 26496
Subject
LIGO/Virgo S191216ap: No candidates found in J-GEM follow-up observations of HAWC error region
Event
Date
2019-12-19T07:32:40Z (6 years ago)
From
Mahito Sasada at Hiroshima University <sasadam@hiroshima-u.ac.jp>
Yanagisawa, K.; Yoshida, M. (NAOJ); Onozato, H.; Takahashi, J. (U. Hyogo); Itoh, R. (Bisei Astronomical observatory); Takarada, T. (Saitama U.); Sasada, M. (Hiroshima U.); Utsumi, Y. (Stanford/SLAC); Toma, S.; Adachi, R.; Murata, K. L. (Tokyo Tech.)
on behalf of J-GEM collaboration
Following detections of the LIGO-Virgo (S191216ap; Piotrzkowski, GCN Circ. 26454), IceCube (Hussain, CGN Circ. 26460) and HAWC (Martinez-Castellano, GCN Circ. 26472), we performed imaging observations of a galaxy, GL213356+051647, selected from our candidate selection algorithm based on the GLADE v2.3 catalog (Dalya et al., 2018) and those localizations. Our candidate galaxy is also ranked as the top candidate in Singer, GCN Circ. 26479. We started our observations from 2019-12-18 08:11 UT (MJD=58835.34) and ended at 2019-12-18 10:27 UT (MJD=58835.44).
We found no apparent transient objects in these galaxies to 5 sigma limiting magnitudes in the AB system listed below.
galid ra dec dist J H Ks Ic g$B!G(B Rc obsid
--------------- -------- ------ ------ ---- ---- ---- ---- ---- ---- ----------------------------------------
GL213356+051647 323.4824 5.2796 274.42 17.8 18.3 18.1 18.5 16.5 17.0 OAOWFC,Nayuta-NIC,BAO101cm,MITSuME-Akeno
BAO101cm: 101 cm telescope at Bisei Astronomical Observatory and CCD optical camera (Ic)
MITSuME-Akeno: 50 cm MITSuME telescope at Akeno Observatory and a 3 color imager (g$B!G(B, Rc, Ic)
Nayuta-NIC: 200 cm Nayuta telescope at Nishi-Harima Astronomical Observatory and Nishiharima Infrared Camera, NIC (J, H, Ks)
OAOWFC: 91 cm Okayama Astrophysical Observatory NIR Wide Field Camera, OAOWFC (J) (Yanagisawa et al., 2019, PASJ, 71, 118)