TITLE: GCN CIRCULAR NUMBER: 25366 SUBJECT: LIGO/Virgo S190814bv : No Counterpart Candidates in Galaxy Targeted Search with Magellan DATE: 19/08/16 13:07:29 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 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 00EQY 00:46:38.0 -24:18:07.0 2019-08-16 09:24:18.2 00HB7 00:53:54.5 -25:23:43.4 2019-08-16 10:19:37.4 00LCX 00:48:13.9 -23:29:35.0 2019-08-16 09:27:10.7 01P3P 00:45:40.8 -24:34:53.6 2019-08-16 10:14:28.9 01P47 00:48:45.3 -23:47:23.4 2019-08-16 10:30:01.7 025PZ 00:46:59.1 -25:22:19.2 2019-08-16 09:15:42.1 02EP7 00:50:42.2 -26:14:39.9 2019-08-16 09:41:26.9 02ESQ 00:49:42.4 -25:54:23.5 2019-08-16 09:12:49.4 02ET0 00:50:40.6 -25:53:07.9 2019-08-16 08:58:20.0 02F2M 00:54:08.0 -24:59:54.3 2019-08-16 09:56:41.9 02F6B 00:49:23.9 -24:38:18.8 2019-08-16 08:37:56.0 02F6F 00:51:45.7 -24:37:48.5 2019-08-16 08:47:00.8 02FGS 00:50:05.2 -23:32:59.8 2019-08-16 10:00:06.7 02UYQ 00:54:39.4 -25:23:13.3 2019-08-16 09:51:01.0 02UYR 00:47:54.9 -25:31:37.4 2019-08-16 09:04:14.4 02WGO 00:52:11.7 -25:39:54.9 2019-08-16 08:40:45.9 02Z2Y 00:48:32.1 -23:44:33.7 2019-08-16 09:01:26.7 03BPH 00:52:35.0 -24:38:08.8 2019-08-16 08:43:55.6 03BPX 00:51:00.2 -24:34:26.5 2019-08-16 08:21:39.0 03BUR 00:48:13.4 -23:42:15.8 2019-08-16 09:18:30.3 04EGS 00:48:25.2 -25:00:02.9 2019-08-16 08:32:12.9 04EGT 00:49:12.0 -24:58:56.4 2019-08-16 08:15:37.9 04EGV 00:50:48.6 -26:16:35.9 2019-08-16 09:47:05.2 04EGW 00:52:34.3 -26:06:07.7 2019-08-16 09:21:19.0 06Q49 00:45:05.5 -24:10:47.5 2019-08-16 10:24:51.4 06Q4B 00:46:37.7 -25:35:31.5 2019-08-16 10:11:35.0 06WM6 00:53:51.2 -25:57:17.2 2019-08-16 10:22:13.5 06WOX 00:47:22.7 -25:46:21.9 2019-08-16 09:53:51.3 06WTE 00:50:22.6 -25:30:30.5 2019-08-16 08:55:27.0 06WTS 00:50:47.9 -25:29:06.7 2019-08-16 08:26:24.7 07KMR 00:52:48.0 -25:07:01.3 2019-08-16 08:35:01.0 07KMZ 00:49:00.8 -25:12:12.5 2019-08-16 08:29:33.4 07KNO 00:47:52.7 -25:31:57.9 2019-08-16 09:07:01.9 07KO9 00:52:55.0 -25:45:29.3 2019-08-16 08:52:35.4 07KOH 00:51:06.7 -25:52:24.8 2019-08-16 08:49:49.6 0BEQ6 00:50:48.8 -26:05:57.8 2019-08-16 09:30:10.4 0BUM7 00:47:52.1 -25:03:29.3 2019-08-16 09:09:53.7 0CED3 00:51:01.5 -26:00:30.7 2019-08-16 10:05:47.4 0P05U 00:48:28.4 -25:37:29.3 2019-08-16 09:44:16.8 0PG1R 00:50:33.5 -25:54:49.5 2019-08-16 10:17:03.2 0PG2E 00:50:45.8 -25:53:32.1 2019-08-16 10:02:58.3 0PG2N 00:50:03.0 -25:53:18.9 2019-08-16 09:33:01.0 0SRXP 00:51:04.1 -26:00:18.6 2019-08-16 09:35:51.5 0SRYJ 00:49:21.1 -25:47:35.6 2019-08-16 09:38:39.9 0SRYS 00:49:03.1 -25:49:43.1 2019-08-16 10:08:42.4 Comparison of the images to the PS1 3pi survey (Chambers et al. 2016, arXiv:1612.05560) reveals no new sources brighter than ~22.2 mag within a 7.6 arcmin field of view. We especially thank Tyler Gardner for taking these observations at Magellan.