TITLE: GCN CIRCULAR NUMBER: 18470 SUBJECT: LIGO/Virgo G194575: Kanata/J-GEM optical follow-up DATE: 15/10/25 04:09:42 GMT FROM: Michitoshi Yoshida at J-GEM R. Itoh, T. Nakaoka, M. Yoshida, K. S. Kawabata (Hiroshima Univ.) on behalf of the J-GEM collaboration We made optical follow-up observations of G149575 with HOWPol (Hiroshima Optical Wide-field Polarimeter) attached to the 1.5m Kanata telescope at Higashi-hiroshima Observatory. The instrument has a circular field-of-view whose diameter is 15'. Nearby galaxies selected from GWGC within 10 degree in radius from the skymap peak in the anti-Sun direction (RA=01:02:00 and DEC=+04:25:00). We performed R and I bands imaging observations for each galaxy. The observed galaxies and the limiting magnitudes of R and I bands (Rlim and Ilim) are listed below. No new optical transient was found in these data. ############################################################# # START-TIME EXP-T RA DEC Rlim Ilim OBJECT ############################################################# 2015-10-23T09:46:35 270.0 12.0958 4.0917 18.3 18.7 IC0052 2015-10-23T09:59:36 270.0 13.1375 6.0025 19.2 19.6 UGC00537 2015-10-23T10:10:09 270.0 13.3625 5.7703 18.8 19.4 IC1592 2015-10-23T10:20:41 270.0 13.5792 6.1975 20.6 20.6 PGC003199 2015-10-23T10:31:15 270.0 12.9292 3.1714 17.7 19.5 UGC00526 2015-10-23T10:42:12 270.0 13.6708 5.7739 19.6 ---- IC1598 2015-10-23T10:52:43 90.0 12.9542 3.1056 16.2 20.4 UGC00527 2015-10-23T11:03:12 270.0 13.3833 2.9236 18.6 18.7 UGC00544 2015-10-23T11:13:44 270.0 13.2792 2.6206 18.4 18.3 PGC1232627 2015-10-23T11:24:16 270.0 14.0625 4.4094 18.8 19.4 UGC00574 2015-10-23T11:34:57 270.0 13.3667 2.7739 18.9 19.0 PGC003137 2015-10-23T11:45:43 270.0 14.6250 4.8956 19.0 19.1 PGC003495 2015-10-23T11:56:21 270.0 15.0875 4.6653 19.3 18.8 PGC003600 2015-10-23T12:06:48 270.0 14.6583 3.0289 19.5 19.3 PGC003500 2015-10-23T12:17:38 270.0 16.2375 5.6528 18.6 18.7 UGC00667 2015-10-23T12:28:09 270.0 16.2208 4.7672 18.3 19.0 IC0073 2015-10-23T12:38:41 270.0 15.4417 3.0817 19.8 19.2 UGC00637 2015-10-23T12:49:14 270.0 16.4792 4.0900 20.0 20.0 IC0074 2015-10-23T12:59:45 270.0 16.5583 3.5742 19.9 19.4 UGC00678 2015-10-23T13:10:14 270.0 17.6708 3.6136 18.9 19.2 PGC004199 2015-10-23T13:20:42 270.0 16.6792 2.8219 19.1 19.2 PGC1238390 2015-10-23T13:31:11 270.0 17.2208 3.1358 19.9 20.2 PGC1245956 2015-10-23T13:41:54 270.0 15.9333 2.2831 20.0 19.8 UGC00656 2015-10-23T13:52:27 270.0 16.2250 2.1331 20.2 19.9 IC1613 2015-10-23T14:02:57 270.0 14.4833 0.8689 19.2 19.0 PGC1177707 2015-10-23T14:13:30 270.0 14.9250 0.9164 19.2 19.1 UGC00618 2015-10-23T14:24:03 270.0 14.7292 1.0047 19.6 19.4 PGC003524 2015-10-23T14:34:31 270.0 14.7667 1.0011 19.9 19.8 PGC003530 2015-10-23T14:44:58 270.0 15.6292 1.3436 19.6 19.5 PGC003718 2015-10-23T16:04:32 270.0 17.1500 1.6417 18.9 19.0 UGC00711 2015-10-23T16:15:10 270.0 16.7250 1.9453 20.0 20.1 PGC003943 #############################################################