TITLE: GCN CIRCULAR NUMBER: 25213 SUBJECT: LIGO/Virgo S190728q: No counterpart candidates in KAIT observations DATE: 19/07/29 03:05:42 GMT FROM: Weikang Zheng at UC Berkeley Keto D. Zhang, Andrew Hoffman, Shaunak Modak, Thomas de Jaeger, James Sunseri, Yukei Murakami, WeiKang Zheng, Benjamin Stahl, and Alexei V. Filippenko (UC Berkeley) report on behalf of 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-wavei event S190728q (GCN 25187) 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 90 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 08:55:35, July 28th UT, about 2.17 hours after the trigger, and the last image at 12:10:36 UT. Our typical limiting mag is 19.0. No viable counterparts were identified and the analysis is ongoing. A full list of galaxies observed by KAIT is given below. GladeID UT(July20) RA_J2000 Dec_J2000 ----------------------------------------------- G0236749 08:55:35 00:46:32.0078 +36:19:31.8972 G1023167 08:57:20 20:07:32.9297 -03:33:22.1148 G0905906 08:58:32 20:08:32.7026 -09:39:24.642 G0480402 08:59:41 20:09:32.8272 -09:08:46.3272 G1255471 09:00:50 20:12:16.692 -08:54:07.254 G0476578 09:02:00 20:14:33.523 -08:27:53.3772 G0149230 09:03:11 20:16:11.5502 -03:45:40.7916 G0439598 09:04:24 20:43:57.3048 +06:06:35.0028 G1406085 09:05:34 20:44:26.9018 +07:13:14.574 G1258469 09:06:43 20:46:50.7494 +08:50:41.01 G1248314 09:07:52 20:47:20.713 +05:40:54.0048 G0935153 09:09:02 20:47:29.6191 +09:24:06.9264 G1385959 09:10:11 20:47:44.0258 +09:55:53.9148 G1069077 09:11:20 20:47:58.6303 +06:23:52.2024 G0691529 09:12:30 20:48:10.2466 +07:00:59.1948 G0170309 09:13:39 20:49:02.3438 +06:45:15.228 G0992709 09:14:48 20:49:02.527 +04:50:16.1304 G1163136 09:15:58 20:49:13.1251 +08:38:37.2084 G0261631 09:17:07 20:49:13.3008 +05:33:47.0484 G0218951 09:18:16 20:51:14.934 +06:05:54.6576 G0192870 09:19:26 20:51:29.209 +05:25:38.658 G0329085 09:20:35 20:52:48.0322 +09:58:34.4784 G0953363 09:21:44 20:52:51.8189 +06:59:25.4976 G1022213 09:22:53 20:53:06.9434 +10:05:32.6868 G1039531 09:24:03 20:53:14.9194 +06:07:48.7236 G1379283 09:25:12 20:53:17.0069 +10:37:26.7312 G0401694 09:26:23 20:53:22.1338 +05:25:43.5684 G1410599 09:27:35 20:53:58.0445 +10:24:23.9616 G0335395 09:28:44 20:54:03.955 +07:13:44.9904 G0201390 09:29:53 20:54:04.5043 +08:02:35.9916 G0860377 10:08:00 20:54:21.2402 +06:17:09.2148 G1294503 10:09:09 20:54:26.4038 +05:01:57.2916 G0201635 10:10:18 20:54:51.1889 +07:57:13.1976 G1106635 10:11:28 20:55:16.3404 +05:46:24.816 G1289462 10:12:41 20:55:30.7104 +10:22:18.03 G0169160 10:13:52 20:55:36.0864 +05:22:42.3012 G0373718 10:15:02 20:55:46.333 +07:13:06.2652 G1344558 10:16:11 20:55:57.2681 +10:29:33.2916 G1476964 10:17:21 20:55:59.839 +12:08:12.0552 G0844170 10:18:30 20:56:00.2198 +08:15:01.2996 G0295104 10:19:37 20:56:21.0938 +09:17:19.9176 G1164188 10:20:47 20:56:37.7563 +12:16:00.2532 G1227822 10:21:56 20:56:49.9512 +13:04:25.2876 G0601857 10:23:03 20:57:18.7939 +12:11:13.6032 G1339441 10:24:13 20:57:38.5034 +10:24:32.292 G0523320 10:25:22 20:57:56.5356 +06:04:22.512 G1128719 10:26:31 20:58:01.56 +08:30:10.9224 G0960770 10:27:40 20:58:01.8384 +10:00:02.9232 G0195999 10:28:50 20:58:12.942 +10:07:23.9376 G1355518 10:29:59 20:58:14.9122 +08:25:38.9388 G1307621 10:31:08 20:58:19.0063 +06:51:04.9392 G1273242 10:32:18 20:58:45.6151 +09:30:09.9936 G0839466 10:33:31 20:58:53.8769 +13:50:54.6396 G1346841 10:34:41 20:58:55.7299 +10:34:42.9816 G1140068 10:35:50 20:59:23.3057 +12:10:37.9812 G1095715 10:37:01 20:59:24.2066 +05:49:13.7496 G0964188 10:38:12 20:59:24.961 +10:53:23.064 G0574494 10:39:22 21:00:06.3427 +09:55:56.5788 G0860425 10:40:31 21:00:21.5551 +07:45:47.5632 G1146620 10:41:40 21:00:32.124 +10:03:39.9348 G1346944 11:37:03 21:00:33.0761 +09:25:51.9348 G0846026 11:38:13 21:00:39.7558 +08:14:21.9372 G1080012 11:39:22 21:01:01.0034 +12:11:04.3728 G1422051 11:40:31 21:01:10.7446 +12:27:34.398 G0932932 11:41:41 21:01:30.8496 +11:30:03.5928 G1111413 11:42:50 21:01:37.5 +10:15:56.5956 G0778389 11:43:57 21:02:39.0235 +10:49:30.0216 G1012503 11:45:07 21:02:48.6401 +13:08:10.878 G0757614 11:46:16 21:02:57.7368 +10:10:38.5968 G0809046 11:47:25 21:02:58.8355 +10:33:00.5976 G0852728 11:48:34 21:03:25.2101 +14:33:19.3572 G0904365 11:49:44 21:03:51.4747 +11:45:49.4892 G1297650 11:50:53 21:03:58.1837 +13:08:29.13 G1188076 11:52:02 21:04:04.5482 +11:18:48.4956 G0994698 11:53:16 21:04:08.1811 +14:42:15.1668 G0373310 11:54:25 21:04:15.791 +10:33:25.47 G0804854 11:55:35 21:04:37.163 +09:42:57.6792 G0873177 11:56:44 21:04:50.7641 +11:52:38.856 G1293574 11:57:53 21:04:50.9179 +12:55:38.8632 G1284258 11:59:02 21:05:06.8042 +13:34:37.6572 G0311386 12:00:12 21:05:15.0514 +12:10:32.6928 G1449742 12:01:21 21:05:16.6478 +11:24:56.1312 G0110246 12:02:30 21:05:18.9698 +12:59:59.7048 G0527283 12:03:40 21:05:23.5841 +15:05:58.7112 G0892624 12:04:49 21:05:25.6274 +11:22:41.1528 G0191566 12:05:58 21:05:45.498 +07:57:56.826 G0326509 12:07:08 21:05:46.5454 +09:36:39.1284 G0403282 12:08:17 21:05:57.715 +13:35:19.1652 G1332587 12:09:26 21:06:02.9297 +13:28:21.1908 G0401046 12:10:36 21:06:12.107 +13:41:25.2276