[vsnet-grb-info 24397] LIGO/Virgo S191216ap: No candidates found in J-GEM follow-up observations of HAWC error region

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26496
SUBJECT: LIGO/Virgo S191216ap: No candidates found in J-GEM follow-up observations of HAWC error region
DATE:    19/12/19 07:32:40 GMT
FROM:    Mahito Sasada at Hiroshima University  <sasadam at 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)