TITLE: GCN CIRCULAR NUMBER: 25559 SUBJECT: LIGO/Virgo S190828l: No counterpart candidates in KAIT observations DATE: 19/08/29 22:43:47 GMT FROM: Weikang Zheng at UC Berkeley Shaunak Modak, Sergiy Vasylyev, Thomas de Jaeger, Keto D. Zhang, WeiKang Zheng, Andrew Hoffman, Benjamin E. Stahl, Yukei Murakami, 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, observed the 90% region of the gravitational-wave event S190828l (GCN 25503) detected by LIGO/Virgo. More than one thousand galaxies were selected from the Glade catalog V1.0 (Dalya et al., 2018, MNRAS, 479, 2374; http://aquarius.elte.hu/glade/) according to their priority score. KAIT observed 59 of them based on their priority scores and elevation visibility, with each clear-filter exposure time being 60 s. The first image was taken at 11:44:07, Aug. 29th UT, about 28.8 hours after the trigger, and the last image at 12:57:58 UT. Our typical limiting mag is 18.5. No viable counterparts were identified and the analysis is ongoing. A full list of galaxies observed by KAIT is given below. GladeID UT(Aug29) RA_J2000 Dec_J2000 ----------------------------------------------- G0595607 11:44:07 03:00:30.444 +49:21:13.3848 G0768405 11:45:18 03:03:32.1653 +49:37:19.7688 G0777619 11:46:32 03:03:40.4251 +51:34:31.8144 G0672859 11:47:43 03:05:05.8877 +50:19:24.096 G0738775 11:48:59 03:06:24.3511 +52:34:54.9264 G0599454 11:50:08 03:10:38.0302 +48:52:10.7328 G0559089 11:51:20 03:27:21.6842 +49:59:01.0032 G0695101 11:52:31 03:37:07.4249 +49:03:08.7444 G0747552 11:53:52 05:11:53.8622 +45:37:14.2356 G0336853 11:55:02 05:13:42.0134 +46:00:58.4064 G0526083 11:56:11 05:16:39.1992 +45:34:27.9696 G1097965 11:57:20 05:17:19.7606 +42:05:05.9568 G0161517 11:58:30 05:17:54.7723 +42:24:03.852 G0626286 11:59:39 05:20:14.154 +43:18:21.4056 G1302293 12:00:48 05:22:14.6686 +41:28:19.902 G0736602 12:01:58 05:24:13.1177 +42:20:18.1356 G0886051 12:03:08 05:25:17.7338 +45:24:10.6488 G1147141 12:04:17 05:25:40.6294 +41:41:53.0124 G1243574 12:05:27 05:25:51.5258 +43:10:11.5536 G1231909 12:06:36 05:26:01.8293 +43:22:56.6292 G1200246 12:07:51 05:26:30.4121 +40:26:56.0076 G0606566 12:09:03 05:27:25.0322 +45:50:49.0344 G0186139 12:10:13 05:27:27.2882 +41:59:04.848 G1414478 12:11:22 05:27:33.9991 +46:11:58.0128 G0926148 12:12:32 05:27:37.8094 +44:08:45.9852 G0934140 12:13:43 05:27:40.9222 +46:09:53.9604 G0284079 12:14:52 05:28:03.9442 +43:09:14.1516 G0386281 12:16:02 05:28:04.477 +43:39:18.162 G1287779 12:17:13 05:28:15.5364 +43:04:08.1264 G1402290 12:18:22 05:29:42.7094 +45:30:00.8928 G0344496 12:25:25 05:29:45.3058 +43:32:20.7348 G0601049 12:26:34 05:29:55.4719 +44:34:38.8056 G0069319 12:27:48 05:30:02.8692 +44:11:51.8172 G0957486 12:28:57 05:30:03.521 +44:38:15.828 G0917178 12:30:13 05:30:04.8065 +41:54:08.2584 G1464030 12:31:22 05:30:04.931 +44:44:55.824 G1121082 12:32:31 05:30:43.9013 +42:25:50.6928 G0841668 12:33:41 05:30:49.9438 +41:12:59.1228 G1331307 12:34:50 05:30:56.1384 +42:40:15.6612 G1190621 12:35:59 05:31:05.7972 +40:40:39.4608 G1122787 12:37:09 05:31:17.3767 +41:54:59.4972 G0412661 12:38:18 05:31:24.0014 +45:52:02.6292 G1138379 12:39:27 05:31:38.6134 +41:45:04.8492 G1027891 12:40:37 05:31:38.9887 +42:30:19.5696 G1216616 12:41:46 05:31:42.2717 +40:59:51.8856 G1385195 12:42:53 05:31:59.0496 +40:46:44.9472 G1101923 12:44:03 05:32:01.8403 +41:39:29.9304 G1125001 12:45:12 05:32:05.5903 +41:40:03.918 G0747978 12:46:20 05:32:17.9518 +42:30:28.2348 G1017116 12:47:30 05:32:37.8588 +45:00:12.114 G1146557 12:48:39 05:33:00.1997 +41:40:23.5164 G0957979 12:49:48 05:33:11.9054 +44:45:11.3292 G1284321 12:50:58 05:33:34.1162 +47:04:33.3408 G0965263 12:52:07 05:33:37.11 +44:33:03.3192 G1417780 12:53:14 05:34:17.5286 +44:35:02.3028 G1471417 12:54:28 05:34:19.9183 +41:45:17.6184 G1176015 12:55:39 05:34:25.2338 +46:23:48.894 G1370730 12:56:48 05:34:56.1785 +44:41:19.86 G1422126 12:57:58 05:35:16.5382 +44:26:24.09