TITLE: GCN CIRCULAR NUMBER: 18471 SUBJECT: LIGO/Virgo G194575: Near-infrared follow-up with OAO-WFC DATE: 15/10/26 04:09:55 GMT FROM: Michitoshi Yoshida at J-GEM K. Yanagisawa, D. Kuroda (OAO/NAOJ), Y. Utsumi, M. Yoshida (Hiroshima), K. Ohta(Kyoto) and N. Kawai(Tokyo Tech.) on behalf of the J-GEM collaboration. We carried out J-band imaging observations of 32 nearby galaxies to search for new point sources associated with the objects, in response to G194575. The target galaxies were selected from nearby galaxies listed in GWGC, close to the anti-solar direction. The observations were made on 23rd and 24th October 2015, with a wide-field infrared camera (D=0.91 m), OAOWFC, of Okayama Astrophysical Observatory of NAOJ. We could find no new point sources brighter than the limiting magnitude of J=17-18(S/N=3) in Vega system. The photometric calibration was made against 2MASS field stars. Summary of the observations are listed below. #----------------------------------------- #Object UT Start Exp Limit J # (min) (S/N=3) #----------------------------------------- UGC00637 2015-10-23 09:15 15 17.2 PGC003718 2015-10-23 09:35 20 17.5 UGC00656 2015-10-23 10:02 15 17.7 IC0073 2015-10-23 10:22 15 17.6 IC1613 2015-10-23 10:42 15 17.8 UGC00667 2015-10-23 11:02 15 17.9 IC0074 2015-10-23 11:22 15 18.1 UGC00678 2015-10-23 11:41 29 18.2 PGC1238390 2015-10-23 12:42 13 18.1 UGC00711 2015-10-23 13:50 20 18.4 PGC1245956 2015-10-23 14:17 15 18.3 PGC004199 2015-10-23 14:37 15 18.2 IC0052 2015-10-23 14:57 15 18.2 UGC00526 2015-10-23 15:17 15 18.2 UGC00527 2015-10-23 15:37 15 18.2 UGC00537 2015-10-23 15:57 15 18.2 PGC1232627 2015-10-23 16:17 15 18.2 IC1592 2015-10-23 16:36 15 18.2 PGC003137 2015-10-23 16:56 15 18.1 UGC00544 2015-10-23 17:16 15 17.8 PGC003199 2015-10-23 17:36 15 17.9 IC1598 2015-10-23 17:56 15 17.7 UGC00574 2015-10-23 18:16 15 17.6 PGC1177707 2015-10-23 18:36 09 17.1 PGC003495 2015-10-24 09:56 15 17.7 PGC003500 2015-10-24 10:16 15 17.9 PGC003524 2015-10-24 10:36 15 17.9 PGC003530 2015-10-24 10:56 15 17.9 UGC00618 2015-10-24 11:16 15 17.7 PGC003600 2015-10-24 11:36 15 17.9 UGC00637 2015-10-24 11:55 15 18.0 PGC003718 2015-10-24 12:15 15 17.8 #-----------------------------------------