TITLE: GCN CIRCULAR NUMBER: 25437 SUBJECT: LIGO/Virgo S190814bv: No Optical Counterpart Candidates in Second-Epoch Lick/KAIT Observations DATE: 19/08/21 23:04:48 GMT FROM: Weikang Zheng at UC Berkeley Sergiy Vasylyev, Benjamin E. Stahl, Keto D. Zhang, Thomas de Jaeger, Yukei Murakami, Shaunak Modak, Kishore Patra, James Sunseri, Nachiket Girish, WeiKang Zheng, and Alexei V. Filippenko (UC Berkeley) report on behalf of the Lick/KAIT GW follow-up team: The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, performed second-epoch follow-up observations of the gravitational-wave event S190814bv (GCN 25324) detected by LIGO/Virgo on Aug. 18 UT, in addition to the first-epoch observations conducted on Aug. 15 (Vasylyev et al., GCN 25353). 52 galaxies were observed based on their priority scores and elevation visibility, with each clear-filter exposure time being 60 s. Our typical limiting magnitude is 18.0. No viable counterparts were identified and the analysis is ongoing. A full list of galaxies observed by KAIT is given below. GladeID UT(Aug18) RA_J2000 Dec_J2000 ----------------------------------------------- G0759372 09:43:15 00:44:14.1631 -25:06:33.2676 G0769196 10:16:17 00:49:23.1202 -26:30:26.9928 G0722022 10:36:40 00:53:44.8306 -27:36:18.306 G0648787 10:52:57 00:58:52.3109 -28:18:11.4696 G0744674 10:54:06 00:59:12.2695 -26:28:32.5092 G0678447 10:56:25 01:00:12.6631 -25:29:38.6376 G0621801 10:57:34 01:08:06.253 -27:37:43.3704 G0654768 10:59:53 01:15:28.2518 -30:22:28.0344 G0798266 11:01:02 01:17:59.3158 -30:45:45.4284 G0820330 11:02:11 01:18:15.4531 -30:46:28.4592 G0781747 11:03:23 01:20:07.6502 -32:55:51.8736 G0569298 11:04:32 01:20:15.8002 -30:11:07.9224 G0620221 11:19:09 01:22:11.3681 -31:32:34.5444 G0818640 11:20:18 01:22:29.1362 -32:43:02.0496 G0648167 11:21:28 01:22:31.0716 -31:19:02.0568 G0577695 11:22:37 01:23:01.4191 -31:08:15.5724 G0595298 11:23:46 01:23:14.8567 -32:50:28.6008 G1019706 11:24:58 01:23:40.9826 -31:20:33.5328 G0654122 11:26:07 01:24:33.2378 -31:21:58.6476 G0607401 11:27:16 01:24:34.5158 -33:10:24.6432 G0779486 11:28:28 01:24:50.3083 -31:45:23.8392 G0719778 11:29:37 01:24:55.1633 -30:37:15.8484 G0575310 11:30:46 01:25:37.1508 -30:21:55.7424 G0577764 11:31:55 01:25:47.5049 -30:02:04.0992 G0649850 11:33:05 01:26:45.6499 -32:53:47.742 G0682486 11:34:14 01:28:12.0859 -32:09:53.5356 G0689849 11:35:24 01:28:37.7206 -32:20:33.2844 G0971291 11:36:33 01:29:10.2703 -31:34:41.628 G0656725 11:37:40 01:29:22.2941 -32:50:57.6744 G1156151 11:38:50 01:30:08.341 -32:10:05.25 G0654024 11:39:59 01:30:11.9796 -32:54:13.2012 G0660500 11:41:08 01:31:45.2472 -32:24:56.2428 G0798774 11:42:18 01:32:04.3397 -33:48:10.3536 G0568433 11:43:27 01:32:21.4769 -31:05:32.3556 G0624721 11:45:47 01:32:58.309 -30:04:57.27 G0740474 11:46:57 01:34:01.9937 -33:26:37.5756 G0579643 11:48:08 01:34:04.2989 -32:48:31.554 G0805272 11:49:17 01:34:14.725 -31:38:56.112 G0568762 11:50:27 01:34:17.6906 -32:44:30.1164 G0664339 11:51:38 01:34:22.7609 -32:50:07.1376 G1428108 11:52:47 01:34:24.3581 -31:36:20.1348 G0235366 12:05:05 01:34:32.5068 -30:42:37.1232 G1435270 12:06:12 01:34:48.2006 -30:58:50.2356 G0651587 12:07:22 01:35:30.5822 -32:58:14.2032 G0658915 12:08:31 01:35:42.7565 -33:08:10.1976 G0638405 12:09:42 01:37:33.875 -32:13:45.5412 G0632982 12:10:51 01:37:49.3337 -32:54:36.5904 G0562220 12:12:01 01:38:28.5005 -33:36:28.9836 G0567443 12:13:13 01:39:30.4092 -34:02:25.9404 G0606993 12:14:22 01:39:52.207 -34:05:35.1924 G0554073 12:15:32 01:39:55.5854 -34:07:25.2084 G0033739 12:16:43 01:47:44.4682 -33:36:05.5152