TITLE: GCN CIRCULAR NUMBER: 24957 SUBJECT: LIGO/Virgo S190630ag: No counterpart candidates in KAIT observation DATE: 19/07/01 23:47:13 GMT FROM: Weikang Zheng at UC Berkeley Yukei Murakami, Shaunak Modak, Sergiy Vasylyev, Benjamin Stahl, WeiKang Zheng, Andrew Hoffman, Nachiket Girish, and Alexei 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-wavei event S190630ag (GCN 24922) 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 148 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 10:39:35, July 1st UT, about 16.0 hours after the trigger, and the last image at 11:18:34 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 RA_deg(J2000) Dec_deg(J2000) ----------------------------------------------- G0061445 341.9249572753906 1.907817006111145 G0092394 319.9082946777344 23.86920928955078 G0110246 316.32904052734375 12.999917984008789 G0113330 343.4059143066406 1.6700730323791504 G0128008 343.24871826171875 3.5833311080932617 G0138166 318.15472412109375 12.344159126281738 G0146771 330.15570068359375 36.799217224121094 G0176149 342.5879211425781 5.086748123168945 G0188614 317.3526306152344 12.957232475280762 G0191566 316.4395751953125 7.965785026550293 G0197115 343.0567932128906 2.2420759201049805 G0203366 317.57708740234375 17.720905303955078 G0217228 319.831787109375 13.57975959777832 G0228798 343.8270568847656 9.654282569885254 G0253695 342.6175231933594 4.694252967834473 G0259099 306.0604553222656 21.34751319885254 G0288824 318.0233459472656 21.468807220458984 G0317142 314.04083251953125 15.730732917785645 G0331434 317.4542541503906 19.71814727783203 G0343435 319.633056640625 22.522260665893555 G0353352 318.4770202636719 19.369688034057617 G0364054 309.0512390136719 14.561393737792969 G0372182 318.5006103515625 17.060741424560547 G0381768 319.09576416015625 16.906875610351562 G0401046 316.5504455566406 13.690340995788574 G0522663 319.3000183105469 18.278528213500977 G0523053 343.2687683105469 4.272221088409424 G0527283 316.3482666015625 15.099641799926758 G0534476 318.4536437988281 14.539608001708984 G0539495 318.87933349609375 20.40052032470703 G0545746 316.9638366699219 14.697251319885254 G0547445 341.9770202636719 5.525643825531006 G0554727 306.6247863769531 11.826129913330078 G0556840 341.6595153808594 -5.284846782684326 G0573762 317.7817077636719 -2.038830041885376 G0598776 341.6076354980469 -0.02823299914598465 G0602666 342.7663879394531 7.761270999908447 G0605573 342.9013671875 11.007864952087402 G0607582 342.7892150878906 14.765083312988281 G0614708 341.5901184082031 -0.0615679994225502 G0620749 327.75787353515625 36.54386901855469 G0631040 341.7713623046875 1.530542016029358 G0635624 341.1427307128906 -4.696380138397217 G0642167 341.23883056640625 -4.472480773925781 G0653922 341.8634338378906 -4.3395609855651855 G0660376 319.55120849609375 65.61320495605469 G0662217 342.4907531738281 10.862078666687012 G0689029 311.7810363769531 0.3004690110683441 G0744560 342.2490539550781 -0.039427999407052994 G0747850 341.4222717285156 -1.4947960376739502 G0751988 342.1326599121094 12.047146797180176 G0751994 342.0005187988281 12.067659378051758 G0770966 341.9466247558594 12.857375144958496 G0771349 341.1048278808594 -5.725611209869385 G0809046 315.7451477050781 10.550166130065918 G0823379 342.5821228027344 10.903489112854004 G0829519 342.0823059082031 -5.330543041229248 G0830281 305.8343811035156 20.03953742980957 G0851960 318.37353515625 16.89679718017578 G0866592 319.7909851074219 19.712661743164062 G0867336 341.8969421386719 3.8530919551849365 G0870427 343.1185607910156 7.70672082901001 G0886808 343.18524169921875 6.3733930587768555 G0888699 341.6392517089844 -2.4654040336608887 G0888752 317.9061584472656 20.872385025024414 G0898451 319.516357421875 23.73065948486328 G0915065 308.6819763183594 17.92630386352539 G0915839 305.86822509765625 23.06815528869629 G0928322 330.2781066894531 36.06706237792969 G0929178 316.63287353515625 23.183130264282227 G0932932 315.3785400390625 11.500997543334961 G0935605 307.2861328125 14.036181449890137 G0941438 316.7498474121094 16.186092376708984 G0945181 342.4139404296875 1.4307090044021606 G0952296 342.9849853515625 6.389228820800781 G0994698 316.0340881347656 14.70421314239502 G0999336 341.67108154296875 1.467797040939331 G1005682 319.7104797363281 23.598472595214844 G1008274 341.0709228515625 11.441901206970215 G1009351 317.86376953125 18.007173538208008 G1016681 306.0959777832031 20.025863647460938 G1021078 304.6157531738281 24.826311111450195 G1026057 332.6576232910156 27.30628776550293 G1034138 343.5093078613281 1.7944929599761963 G1037493 342.1183776855469 3.353332996368408 G1046084 341.8002624511719 1.3708219528198242 G1051237 319.9819030761719 19.465940475463867 G1054477 316.6243896484375 9.170035362243652 G1055764 319.5661926269531 19.174840927124023 G1067663 318.821044921875 21.971057891845703 G1077484 318.376220703125 14.921242713928223 G1079830 317.7655029296875 15.193946838378906 G1080012 315.2541809082031 12.184548377990723 G1080147 317.9605407714844 20.99880027770996 G1086075 304.7977600097656 22.706878662109375 G1090502 330.4983215332031 33.39694595336914 G1090610 331.0491027832031 38.59846115112305 G1104348 318.2252197265625 13.14095401763916 G1106349 318.9924011230469 21.520658493041992 G1107026 315.6747131347656 22.257457733154297 G1108527 319.6886901855469 19.316713333129883 G1110425 318.8880310058594 23.226354598999023 G1121342 317.30206298828125 15.693902015686035 G1125633 342.62713623046875 3.7509210109710693 G1139958 341.84130859375 -1.8711689710617065 G1140068 314.84710693359375 12.177216529846191 G1140350 317.4183654785156 15.956110954284668 G1156117 343.60394287109375 5.693478107452393 G1178742 318.2795104980469 21.693946838378906 G1185561 306.64056396484375 21.61431884765625 G1192099 342.04345703125 -4.658606052398682 G1195858 318.24822998046875 21.24338722229004 G1196493 304.9854736328125 18.736492156982422 G1198664 342.1663513183594 1.5813930034637451 G1199228 342.7058410644531 1.948989987373352 G1205282 317.37872314453125 19.153308868408203 G1212826 303.58270263671875 19.835834503173828 G1244768 342.6612854003906 4.645647048950195 G1249024 343.2779541015625 3.833332061767578 G1275042 315.7004699707031 24.66737937927246 G1275459 344.1455383300781 7.17429780960083 G1283274 341.17327880859375 0.6272280216217041 G1284258 316.2783508300781 13.577127456665039 G1301461 318.7709655761719 17.448251724243164 G1308708 318.75531005859375 12.57158374786377 G1314325 342.0331115722656 8.019875526428223 G1319236 319.9844055175781 23.858163833618164 G1334362 318.15118408203125 22.59657859802246 G1342808 341.9000549316406 -3.1834468841552734 G1361431 342.41815185546875 7.987196922302246 G1366506 318.9411926269531 22.696460723876953 G1367112 341.81072998046875 7.746367931365967 G1367500 341.3768615722656 2.083343982696533 G1369863 343.3456115722656 5.787590980529785 G1371060 305.9384460449219 19.860227584838867 G1389431 310.9674377441406 15.59082317352295 G1391634 317.9789733886719 18.553525924682617 G1398951 317.0672302246094 18.098711013793945 G1405412 317.8551940917969 18.500783920288086 G1410444 306.4672546386719 22.671737670898438 G1410599 313.4918518066406 10.406656265258789 G1417508 315.5130615234375 16.657384872436523 G1426221 319.7685852050781 13.95448112487793 G1445948 340.8894958496094 -5.12808895111084 G1449047 342.3941650390625 1.8826509714126587 G1451963 316.8103332519531 19.12601661682129 G1462570 318.6368408203125 18.65683364868164 G1738900 342.4949951171875 0.918330013751983