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GCN Circular 24957

Subject
LIGO/Virgo S190630ag: No counterpart candidates in KAIT observation
Date
2019-07-01T23:47:13Z (5 years ago)
From
Weikang Zheng at UC Berkeley <weikang@berkeley.edu>
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
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