LIGO/Virgo S200224ca: No counterpart candidates in KAIT observations

James Sunseri, Keto D. Zhang, Shaunak Modak, 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, observed the 90% region of the gravitational-wave event S200224ca (GCN 27184) 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 77 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 05:01:26, Feb. 25th UT, about 6.7 hours after the trigger, and the last image at 09:29:37 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(Feb25) RA_J2000 Dec_J2000 ----------------------------------------------- G0673461 05:01:26 10:44:53.496 +12:35:05.892 G0698936 05:03:45 10:46:08.2543 +12:36:58.5792 G0629402 05:04:52 10:46:19.801 +12:37:19.56 G0806101 05:06:03 10:46:38.9429 +11:45:55.1124 G0518983 05:07:12 10:47:22.1998 +12:43:49.764 G0165487 05:08:21 10:48:17.6659 +13:54:41.58 G0400195 05:11:48 10:50:23.4156 +13:48:52.2252 G0259691 05:12:57 10:50:42.0482 +12:56:50.2152 G0782778 05:16:27 10:51:08.6683 +13:50:53.7324 G0654615 05:17:37 10:51:09.4445 +08:43:32.2752 G0679827 05:18:46 10:51:11.2975 +10:38:36.2796 G0787037 05:19:56 10:51:16.5161 +11:51:47.2824 G0619835 05:21:08 10:51:19.9915 +11:49:29.28 G0591424 05:22:17 10:51:29.4984 +10:41:08.4408 G0669021 05:26:59 10:51:43.3375 +10:45:24.4728 G0200654 05:28:09 10:51:46.8823 +08:46:31.476 G0583050 05:29:18 10:51:59.0551 +12:12:55.4868 G0556324 05:30:28 10:52:11.4074 +12:17:48.462 G1138356 05:31:37 10:52:32.9772 +10:36:20.5128 G0660070 05:32:46 10:52:48.241 +10:41:31.4772 G0626622 05:33:56 10:52:49.4347 +12:07:44.472 G0787922 05:35:05 10:52:59.4288 +10:12:38.772 G0628137 05:45:32 10:53:02.8565 +11:31:16.7772 G0296593 05:46:41 10:53:03.7097 +09:37:24.7764 G0709189 05:47:51 10:53:53.7487 +12:37:21.27 G0619660 05:49:00 10:54:09.1882 +12:33:24.2856 G0749789 05:50:09 10:54:17.19 +10:48:55.7316 G0841361 05:51:19 10:54:17.6844 +09:18:30.7332 G0828471 05:52:28 10:54:49.2773 +09:11:04.362 G0884104 05:53:37 10:54:59.8829 +09:11:26.3724 G1295231 05:54:46 10:55:00.8275 +12:02:53.3724 G0565461 05:55:56 10:55:23.4559 +11:18:59.256 G0549630 05:57:05 10:55:31.9044 +08:50:49.2648 G0093456 05:58:15 10:55:36.1524 +08:23:18.2688 G0569013 05:59:24 10:55:38.1408 +11:00:20.268 G0623088 06:00:34 10:55:53.6388 +15:20:27.3624 G0790896 06:01:43 10:56:06.8554 +10:58:22.6344 G0608596 06:02:53 10:56:15.487 +09:45:15.6168 G0280245 06:04:02 10:56:17.2303 +09:33:57.384 G1005344 06:05:16 10:56:39.4006 +07:07:20.4168 G0602699 06:06:25 10:56:44.0772 +09:45:32.4144 G0624595 06:07:34 10:56:44.1686 +07:09:04.4172 G1069807 06:08:44 10:57:07.2144 +10:20:32.892 G1163532 06:09:53 10:57:15.2381 +07:47:24.882 G1337604 06:11:02 10:57:23.5034 +08:49:37.1748 G0827745 06:12:12 10:57:31.8641 +08:17:56.1768 G1228502 06:13:21 20:11:20.7934 +69:57:42.7824 G0565601 08:55:53 10:59:10.1551 +07:48:32.2776 G0782794 08:57:02 10:59:18.175 +12:18:46.7856 G0743465 08:58:14 10:59:33.2189 +07:41:03.3288 G0682241 08:59:24 10:59:53.4706 +08:54:27.2052 G0791401 09:00:33 11:00:12.3888 +08:46:15.7584 G0797621 09:01:40 11:00:22.716 +08:20:17.7756 G0565575 09:02:50 11:00:31.4026 +07:16:16.7808 G0632512 09:03:59 11:00:33.6144 +06:12:13.7808 G0564972 09:05:08 11:00:40.8362 +07:13:24.7512 G0549831 09:06:17 11:01:01.9373 +07:16:50.7612 G0587079 09:07:27 11:02:43.7878 +05:22:52.5036 G0745333 09:08:36 11:05:26.3818 +03:17:33.0828 G0637766 09:09:50 11:06:38.1886 -02:43:10.2684 G0644398 09:11:01 11:07:28.6963 +03:48:08.9928 G0662623 09:12:10 11:08:03.9257 +02:00:13.7196 G0610069 09:13:20 11:08:21.731 +00:49:21.72 G0687196 09:14:29 11:08:43.7292 +00:27:27.5796 G0685235 09:15:38 11:09:46.2708 +00:48:49.2624 G0489553 09:16:48 11:09:48.5266 +01:25:23.2644 G0707360 09:17:57 11:10:33.3874 -00:34:58.2888 G0711373 09:19:06 11:11:00.5969 -00:53:34.7676 G0739801 09:20:18 11:11:16.3661 -06:16:03.3168 G0740915 09:21:29 11:11:16.9298 -00:49:27.75 G1052029 09:22:38 11:13:37.489 -01:57:20.5488 G0569482 09:23:48 11:14:00.6043 -00:20:11.1948 G0810723 09:25:00 11:14:39.1478 -05:18:24.5016 G1070206 09:26:09 11:14:42.1471 -03:48:51.5016 G0662104 09:27:19 11:15:57.8614 -02:10:14.304 G0203483 09:28:28 11:16:00.0074 -03:46:47.3052 G0726560 09:29:37 11:16:06.6761 -02:52:10.3008