TITLE: GCN CIRCULAR NUMBER: 25382 SUBJECT: LIGO/Virgo S190814bv : No Counterpart Candidates in Continued Galaxy Targeted Search with Magellan DATE: 19/08/17 10:45:12 GMT FROM: Sebastian Gomez at Harvard U S. Gomez, G. Hosseinzadeh, E. Berger, P. K. Blanchard, T. Eftekhari, J. Gill, L. Patton, V. A. Villar, P. K. G. Williams (Harvard U), T. Gardner (U of Michigan), P. S. Cowperthwaite (Carnegie Obs), R. Chornock (Ohio U), W. Fong, R. Margutti (Northwestern U), and M. Nicholl (U Edinburgh) report: We continued observations first reported in GCN 25366. We obtained 60s i-band images of the following galaxies from the GLADE catalog (Dalya et al. 2018, MNRAS, 479, 2374) in the LIGO/Virgo localization region of S190814bv (GCN 25324) with the IMACS imager on the Magellan Baade 6.5-m telescope: Shortname R.A. Dec. Date UT 00O78 00:54:43.5 -26:15:09.4 2019-08-17 09:39:06.3 00Q1K 00:54:43.6 -23:58:31.5 2019-08-17 10:11:31.6 01P3X 00:46:59.0 -22:57:15.8 2019-08-17 10:08:54.2 O1P47 00:48:45.2 -23:47:24.1 2019-08-17 08:13:23.8 01P4L 00:50:44.0 -26:23:32.7 2019-08-17 09:25:56.0 01P52 00:52:05.8 -26:40:56.3 2019-08-17 09:41:40.8 01P5C 00:52:41.9 -26:01:31.5 2019-08-17 08:24:10.3 01PFS 00:54:19.1 -26:18:09.2 2019-08-17 08:48:28.4 01Z17 00:53:25.0 -24:00:30.3 2019-08-17 09:20:51.3 01Z18 00:45:23.9 -23:42:14.0 2019-08-17 09:07:27.0 01Z1I 00:49:16.0 -26:22:27.7 2019-08-17 08:21:31.2 01Z1J 00:48:57.5 -26:28:10.8 2019-08-17 09:10:05.3 O2097 00:48:49.6 -26:24:27.8 2019-08-17 08:38:17.0 025Q2 00:49:40.4 -23:12:41.1 2019-08-17 08:59:23.5 025QB 00:44:33.9 -24:57:04.0 2019-08-17 09:36:32.4 02RYZ 00:54:42.8 -26:15:44.2 2019-08-17 09:02:22.6 02UYV 00:48:32.9 -26:33:00.1 2019-08-17 09:15:44.3 02WGH 00:50:28.3 -23:29:22.0 2019-08-17 08:16:19.3 034FY 00:50:03.8 -23:13:36.4 2019-08-17 09:12:46.7 O3BG6 00:52:56.0 -26:31:52.2 2019-08-17 08:43:22.7 03BPO 00:44:32.4 -24:36:47.6 2019-08-17 08:51:02.6 03BU1 00:54:14.0 -23:48:31.4 2019-08-17 09:46:59.3 03BU6 00:44:34.6 -23:46:55.6 2019-08-17 10:00:56.4 03BX8 00:50:15.4 -23:16:12.7 2019-08-17 09:23:21.8 03BZH 00:46:23.7 -22:57:53.2 2019-08-17 09:33:46.2 042ZA 00:45:23.8 -23:42:42.7 2019-08-17 09:18:16.2 06WD0 00:50:10.6 -26:36:29.4 2019-08-17 08:53:41.4 06WGS 00:54:23.4 -26:18:45.2 2019-08-17 09:04:53.2 06WGY 00:50:50.5 -26:18:08.8 2019-08-17 08:29:18.0 06WHY 00:55:38.8 -26:13:21.1 2019-08-17 10:27:14.3 06X0M 00:55:37.0 -24:58:01.3 2019-08-17 09:58:20.0 07KOT 00:45:47.3 -25:45:19.3 2019-08-17 09:28:35.9 0BUME 00:48:53.1 -26:26:19.8 2019-08-17 09:31:11.0 0BUMG 00:49:02.5 -26:28:11.7 2019-08-17 09:49:39.1 0CE0N 00:50:08.9 -26:20:16.1 2019-08-17 10:03:29.2 0CEW6 00:45:19.8 -25:27:10.5 2019-08-17 10:14:31.6 OCFN6 00:53:28.2 -24:28:28.3 2019-08-17 08:35:44.3 0CFU7 00:46:35.7 -24:10:12.4 2019-08-17 08:18:56.4 0G51H 00:50:25.1 -23:33:47.8 2019-08-17 10:06:19.0 0PFOO 00:51:52.3 -26:15:37.6 2019-08-17 08:45:57.6 0PFR3 00:48:52.5 -26:11:25.8 2019-08-17 10:22:07.0 0PFY3 00:52:11.9 -25:59:57.3 2019-08-17 08:31:50.0 0PG2Y 00:49:22.3 -25:52:39.0 2019-08-17 08:26:42.2 0PG6Z 00:47:12.7 -25:46:08.2 2019-08-17 09:52:11.7 0PGRC 00:45:40.7 -25:08:40.6 2019-08-17 10:19:36.1 OSRQ0 00:50:47.4 -25:27:54.1 2019-08-17 08:40:49.6 0SRQ6 00:49:53.9 -25:34:51.5 2019-08-17 09:44:24.8 0SRQL 00:45:22.2 -25:24:57.5 2019-08-17 10:17:03.6 OSRWW 00:52:29.1 -25:58:56.9 2019-08-17 08:08:38.9 0SRYR 00:49:04.2 -26:13:09.0 2019-08-17 09:55:03.3 0SRZB 00:48:16.0 -25:53:51.1 2019-08-17 08:56:18.6 Comparison of the images to the PS1 3pi survey (Chambers et al. 2016, arXiv:1612.05560) reveals no new sources brighter than ~22.0 mag within a 7.6 arcmin field of view. We especially thank Tyler Gardner for taking these observations at Magellan.