TITLE: GCN CIRCULAR NUMBER: 20720 SUBJECT: LIGO/Virgo G274296: J-GEM optical/NIR follow-up observations DATE: 17/02/22 10:41:46 GMT FROM: Michitoshi Yoshida at J-GEM Yoshida, M. (Hiroshima U.), Itoh, R., Tachibana, Y., Fujiwara, T., Morita, K., Saito, Y., Kawai, N. (Tokyo Tech), Yanagisawa, K., Kuroda, D. (OAO, NAOJ) on behalf of J-GEM collaboration We conducted optical imaging observations of nearby galaxies within the probability skymap of G274296 (Shawhan et al. GCN20689) with the 50cm MITSuME telescopes at Akeno Observatory and Okayama Astrophysical Observatoty (OAO) and the 91cm wide field near-infrared camera (OAOWFC) in the framework of J-GEM collaboration. We obtained optical three color data, g', Rc, and Ic, simultaneously with a three color camera attached to the MITSuME telescopes. Near-infrared J-band data were obtained with OAOWFC. We listed the 5-sigma limiting AB magnitude of each observation below. No optical/infrared transit source corresponding to the GW event was found by these observations. Telescope: Akeno-MITSuME 50cm telescope ---------------------------------------------------------------------- galaxy RA DEC UT g' Rc Ic ---------------------------------------------------------------------- SDSSJ100438.01+191712.3 151.145 19.2901 2017/2/18-13:22 17.9 17.7 17.2 SDSSJ110234.52+321339.2 165.602 32.3042 2017/2/18-19:31 18.8 18.4 17.4 PGC1754917 157.824 25.9592 2017/2/18-17:58 18.9 18.4 17.5 PGC1752182 157.113 25.8593 2017/2/18-13:46 18.5 18.2 16.9 PGC031387 158.876 26.1942 2017/2/18-20:02 18.2 17.9 16.8 PGC1739538 156.843 25.4675 2017/2/18-11:20 17.9 17.2 16.5 SDSSJ103227.23+254420.0 158.106 25.8022 2017/2/18-16:58 18.8 18.3 17.4 PGC1808655 160.101 27.4668 2017/2/18-14:14 18.5 18.2 17.2 UGC06195 167.267 33.9688 2017/2/18-15:14 16.9 15.3 15.3 PGC1742220 157.981 25.6686 2017/2/18-18:29 18.9 18.4 17.6 PGC1747289 156.049 25.6424 2017/2/18-09:59 17.8 17.2 16.6 SDSSJ105042.23+315119.6 162.700 31.8200 2017/2/18-11:54 18.3 18.0 17.3 SDSSJ095947.63+193539.3 149.959 19.5236 2017/2/18-10:27 18.3 17.7 16.7 PGC029063 150.570 19.1965 2017/2/18-12:21 18.7 18.1 17.5 UGC05403 150.648 19.1695 2017/2/18-12:52 18.9 18.2 17.5 NGC3251 157.327 26.0998 2017/2/18-14:54 17.5 16.6 16.4 SDSSJ102436.95+253546.9 156.180 25.5393 2017/2/18-10:50 17.4 17.5 16.9 UGC05679 157.205 26.4013 2017/2/19-16:47 16.9 16.6 15.7 SDSSJ102858.64+251713.1 157.240 25.2823 2017/2/19-12:51 18.6 17.9 17.4 UGC05844 160.985 28.1973 2017/2/19-15:56 17.7 17.1 16.3 PGC1758620 157.748 26.0048 2017/2/19-13:23 17.1 17.0 15.8 SDSSJ101200.03+213820.3 153.035 21.5636 2017/2/19-09:50 17.9 17.0 16.4 IC2583 157.780 26.1222 2017/2/19-16:19 17.0 16.5 15.8 SDSSJ103953.27+272240.0 159.996 27.3349 2017/2/19-11:21 18.6 18.3 17.5 PGC027259 143.837 13.4901 2017/2/19-10:18 18.1 17.7 17.0 SDSSJ100552.60+202338.0 151.437 20.4614 2017/2/19-18:07 16.2 14.6 14.7 PGC028676 149.015 20.5527 2017/2/19-19:09 15.9 14.6 14.7 UGC05401 150.637 18.9816 2017/2/19-10:50 18.3 18.0 18.0 PGC1834191 161.973 28.3977 2017/2/20-14:28 19.2 18.7 17.8 SDSSJ101717.58+220939.3 154.300 22.2234 2017/2/20-16:58 19.2 18.6 17.7 PGC1815236 156.617 27.7584 2017/2/20-19:45 18.4 18.0 16.8 PGC142873 164.106 31.2584 2017/2/20-13:27 19.2 18.5 17.5 SDSSJ103934.08+270302.4 159.907 27.0091 2017/2/20-11:53 16.8 16.3 15.8 IC2590 159.049 27.0281 2017/2/20-17:30 19.0 18.3 17.5 PGC1793207 156.099 26.9558 2017/2/20-13:57 19.3 18.6 17.7 PGC1752683 157.833 25.8397 2017/2/20-12:26 16.9 16.9 16.2 SDSSJ104414.58+284206.3 161.031 28.7746 2017/2/20-18:32 18.7 18.1 17.3 PGC1662338 154.073 22.0953 2017/2/20-16:28 19.2 18.6 17.6 SDSSJ104053.41+270354.0 160.235 27.0461 2017/2/20-12:56 18.8 18.2 17.4 PGC029111 150.714 20.2397 2017/2/20-14:59 19.0 18.4 17.5 PGC1980945 166.151 32.1969 2017/2/20-19:14 18.3 17.9 16.3 PGC031406 159.008 27.0253 2017/2/20-18:00 18.8 18.3 17.3 ---------------------------------------------------------------------- Telescope: OAO-MITSuME 50cm telescope ---------------------------------------------------------------------- galaxy RA DEC UT g' Rc Ic ---------------------------------------------------------------------- UGC06384 170.492 34.9486 2017/2/18-19:03 19.4 19.5 18.9 SDSSJ094405.52+170156.0 146.023 17.0324 2017/2/18-14:09 19.4 19.3 18.7 SDSSJ093238.79+113551.7 143.162 11.5977 2017/2/18-12:50 19.2 19.1 18.6 SDSSJ092951.83+115535.7 142.466 11.9266 2017/2/18-11:32 18.3 18.5 17.9 SDSSJ092816.16+110437.4 142.067 11.0770 2017/2/18-11:13 18.2 18.4 17.9 PGC2053997 170.195 34.7511 2017/2/18-19:24 19.2 19.1 18.4 PGC1888393 162.717 30.0545 2017/2/18-20:21 18.9 18.9 18.3 PGC142873 164.084 31.2703 2017/2/18-20:02 18.6 19.2 18.5 PGC090923 143.003 12.2616 2017/2/18-11:52 19.2 18.7 18.1 PGC035503 172.781 35.5896 2017/2/18-17:05 19.4 19.3 18.7 PGC032906 164.200 31.0904 2017/2/18-19:42 19.0 19.2 18.5 PGC027259 143.841 13.5489 2017/2/18-13:10 19.4 19.4 18.3 PGC027237 143.732 11.6809 2017/2/18-13:29 19.3 19.2 18.7 PGC027113 143.216 12.2868 2017/2/18-12:31 19.1 19.1 18.6 PGC027081 143.068 12.0939 2017/2/18-12:11 18.9 19.0 18.4 NGC3694 172.226 35.4139 2017/2/18-17:45 19.4 19.4 18.8 NGC3380 162.051 28.6018 2017/2/18-20:41 18.7 18.8 18.2 NGC2954 145.100 14.9226 2017/2/18-13:50 19.3 19.3 18.7 2MASXJ11291265+3523089 172.303 35.3858 2017/2/18-17:25 19.3 19.4 18.8 ---------------------------------------------------------------------- Instrument: OAOWFC ------------------------------------------------------------- galaxy RA DEC UT J ------------------------------------------------------------- UGC05381 150.215 22.3137 2017/2/18-13:08 18.79 SDSSJ100106.15+221806.0 150.276 22.3017 2017/2/18-13:08 18.79 IC2551 152.668 24.4141 2017/2/18-13:54 18.81 PGC027113 143.216 12.2868 2017/2/18-10:39 18.26 PGC027081 143.068 12.0939 2017/2/18-10:39 18.26 UGC05420 150.995 22.2760 2017/2/18-18:44 18.51 PGC1667794 150.965 22.3239 2017/2/18-18:44 18.51 PGC1667131 150.985 22.2882 2017/2/18-18:44 18.51 PGC1666640 150.995 22.2641 2017/2/18-18:44 18.51 UGC05381 150.215 22.3137 2017/2/18-18:02 18.72 SDSSJ100106.15+221806.0 150.276 22.3017 2017/2/18-18:02 18.72 2MASXJ09532220+2026551 148.343 20.4487 2017/2/18-12:22 18.66 -------------------------------------------------------------