TITLE:   GCN CIRCULAR
NUMBER:  27196
SUBJECT: LIGO/Virgo S200219ac: No counterpart candidates from Nanshan/NEXT observations
DATE:    20/02/25 07:26:25 GMT
FROM:    Dong Xu at NAOC/CAS  <dxu@nao.cas.cn>

Z.P. Zhu, D. Xu, X. Liu, B.Y. Yu, H.J. Wang, L. Ge, C.Z. Cui, Y.F. Xu, 
T.M. Zhang, X. Zhou,  (NAOC), X. Gao (Urumqi No.1 Senior High School), 
S. Yang (Stockholm U.), H.B. Zhao, B. Li (PMO), J.Z. Liu, X. Zhang 
(XAO), J.R. Mao (YNAO) report on behalf of the GWFUNC collaboration:

We observed 275 GLADE galaxy fields that are selected according to the 
probability sky map of LIGO/Virgo S200219ac (GCN 27130), the B-band 
absolute magnitude for the galaxy < -18, as well as the observable 
altitude > ~30 deg with respect to the NEXT 0.6m optical telescope, 
located at Nanshan, Xinjiang, China. Observations started at 12:26:21 UT 
and ended at 22:40:03 UT on 2020-02-19 in the Sloan r-filter, with 90 
sec for each exposure. Typical limiting magnitude is of r~19.0.

No credible optical counterpart was identified in all the galaxies. Full 
analysis is still ongoing.

The list of the observed galaxies is given below.

Galaxy_Name R.A.(deg)  Dec.(deg)  Dist(Mpc)    M_B

GL12291559+5838076 187.31500 58.63547 824.14 -20.57
GL12310095+5841156 187.75400 58.68767 688.65 -20.63
GL12530791+6334088 193.28300 63.56913 1706.08 -20.62
GL12554103+6331366 193.92099 63.52685 859.01 -21.20
GL12162400+5619433 184.10000 56.32872 1445.44 -20.90
GL12204200+5617097 185.17500 56.28604 1148.15 -20.49
GL12444608+6130585 191.19200 61.51625 1122.02 -21.42
GL12153048+5502200 183.87700 55.03889 1706.08 -20.73
GL12382063+6054212 189.58600 60.90590 1745.82 -20.71
GL11304181+3948444 172.67425 39.81234 866.96 -21.34
GL11512136+4506190 177.83900 45.10529 1028.02 -20.97
GL11531151+4507188 178.29800 45.12189 916.22 -20.82
GL11570576+4505440 179.27400 45.09556 1905.46 -20.92
GL12143407+5218097 183.64200 52.30272 1336.60 -20.76
GL12173840+5217259 184.41000 52.29055 801.68 -20.52
GL12240936+5221303 186.03900 52.35842 783.43 -20.92
GL12250261+5219310 186.26090 52.32528 732.30 -21.43
GL11154421+3220386 168.93422 32.34407 1061.70 -21.18
GL12574991+5628485 194.45800 56.48016 1432.19 -20.21
GL12343808+5417150 188.65869 54.28751 1066.60 -21.38
GL12365327+5421081 189.22200 54.35227 903.65 -21.07
GL12412111+5424184 190.33800 54.40513 1770.11 -21.33
GL12453499+5422302 191.39580 54.37506 1174.90 -21.62
GL12480768+5424302 192.03200 54.40841 1367.73 -21.95
GL12490733+5421347 192.28055 54.35966 1180.32 -21.50
GL12500815+5423362 192.53400 54.39340 1706.08 -21.29
GL12000880+4506574 180.03668 45.11596 1318.26 -23.40
GL12012231+4502539 180.34300 45.04832 1870.68 -20.62
GL12014991+4505598 180.45800 45.09997 1870.68 -20.72
GL12035519+4507599 180.98000 45.13333 912.01 -20.74
GL12290281+5219514 187.26175 52.33096 1076.47 -21.18
GL12324344+5214175 188.18100 52.23821 1651.96 -20.55
GL12333576+5220160 188.39900 52.33779 1061.70 -20.76
GL12343576+5219169 188.64900 52.32137 1051.96 -21.54
GL11395364+3539583 174.97354 35.66621 928.97 -20.98
GL12404680+5214012 190.19500 52.23369 866.96 -20.76
GL12481872+5221490 192.07800 52.36362 1023.29 -20.91
GL12530023+5216390 193.25100 52.27751 1342.76 -20.86
GL11404584+4326353 175.19100 43.44314 1230.27 -21.28
GL11415640+4321244 175.48500 43.35680 895.37 -21.47
GL11453480+4321004 176.39500 43.35013 1584.89 -21.71
GL11471727+4324157 176.82200 43.40437 1548.82 -20.89
GL12324511+5835085 188.18800 58.58572 851.14 -20.74
GL11491896+4322367 177.32900 43.37687 1629.30 -20.48
GL11552843+4325113 178.86848 43.41983 724.44 -20.80
GL12442971+5838107 191.12380 58.63632 1412.54 -21.94
GL11591230+4329081 179.80127 43.48559 1445.44 -21.44
GL12480623+5841400 192.02600 58.69445 950.61 -20.59
GL12554127+5839214 193.92200 58.65597 698.23 -20.55
GL12535782+6102089 193.49092 61.03582 790.68 -21.08
GL12555376+6100147 193.97400 61.00410 1086.43 -20.96
GL12590905+6057127 194.78775 60.95355 1094.04 -21.45
GL13024103+6056015 195.67100 60.93375 1706.08 -20.68
GL13091895+6100319 197.32896 61.00887 702.96 -21.23
GL13134655+6059074 198.44400 60.98541 1614.36 -20.84
GL13145568+6057350 198.73200 60.95974 1659.59 -21.05
GL11331185+3306003 173.29938 33.10010 941.89 -19.95
GL12121415+5024583 183.05900 50.41621 1778.28 -20.96
GL12153863+5021541 183.91100 50.36503 866.96 -20.55
GL12165087+5018422 184.21200 50.31174 862.98 -20.99
GL12165807+5026337 184.24200 50.44272 1940.89 -21.33
GL12180647+5021347 184.52700 50.35965 1949.84 -20.29
GL12201511+5019345 185.06300 50.32627 1976.97 -20.73
GL12214954+5023106 185.45642 50.38629 950.61 -21.34
GL12311183+5022337 187.79932 50.37605 1294.20 -21.38
GL12322280+5026203 188.09500 50.43900 1300.17 -21.07
GL12331176+5027018 188.29900 50.45051 1527.57 -21.06
GL12345736+5021278 188.73900 50.35774 1004.62 -20.76
GL11581589+4645479 179.56621 46.76333 1288.25 -21.06
GL11591857+4646341 179.82741 46.77615 899.50 -20.75
GL12032855+4648060 180.86900 46.80167 1995.26 -20.73
GL12043541+4641592 181.14755 46.69978 1330.45 -23.42
GL12090168+4646446 182.25700 46.77908 1753.88 -20.10
GL13042831+6335591 196.11800 63.59976 1534.62 -20.63
GL13084345+6328580 197.18105 63.48280 820.21 -21.29
GL13111200+6327497 197.80000 63.46383 827.94 -21.01
GL13130336+6332352 198.26400 63.54313 924.70 -21.25
GL12011451+4830585 180.31050 48.51626 1361.44 -20.73
GL12030048+4830362 180.75200 48.51007 1753.88 -20.71
GL12034034+4833557 180.91812 48.56550 758.58 -21.29
GL12043863+4829463 181.16100 48.49621 765.60 -21.04
GL12224223+5619316 185.67600 56.32547 1713.96 -20.93
GL12252496+5621227 186.35400 56.35631 1836.54 -20.47
GL12502087+5621132 192.58700 56.35367 1621.81 -20.82
GL12551511+5618112 193.81300 56.30313 1845.02 -20.55
GL13000258+5621441 195.01076 56.36227 1009.25 -21.28
GL12133340+5416086 183.38919 54.26906 862.98 -20.95
GL12330072+5414517 188.25300 54.24770 1367.73 -21.29
GL12344848+5414322 188.70200 54.24230 1614.36 -20.49
GL12354691+5414341 188.94548 54.24282 924.70 -21.18
GL12365519+5415300 189.22996 54.25834 1086.43 -21.40
GL12373337+5418061 189.38905 54.30170 916.22 -20.93
GL12382780+5418224 189.61587 54.30624 1076.47 -21.67
GL12394920+5415445 189.95500 54.26237 920.45 -20.98
GL12443402+5416517 191.14178 54.28105 938.37 -21.08
GL12342663+5830102 188.61100 58.50286 1028.02 -20.65
GL12442988+5833050 191.12454 58.55141 1235.95 -21.32
GL12493815+5829507 192.40900 58.49742 1492.79 -21.72
GL12533090+6048579 193.37875 60.81611 1011.80 -21.53
GL12580408+6050279 194.51700 60.84109 741.31 -20.87
GL12594176+6056582 194.92400 60.94950 762.08 -20.92
GL13012808+6051230 195.36700 60.85639 1651.96 -21.38
GL13023696+6049289 195.65400 60.82470 941.89 -21.05
GL13041583+6053332 196.06600 60.89256 1761.98 -20.19
GL13082304+6051182 197.09602 60.85506 717.31 -21.10
GL13091194+6051149 197.29976 60.85415 711.21 -20.23
GL11141765+3242437 168.57356 32.71215 1000.00 -21.51
GL11144368+3243365 168.68200 32.72683 1018.59 -20.68
GL11154596+3118326 168.94153 31.30907 1056.82 -21.52
GL11171776+3241534 169.32400 32.69819 1465.55 -21.53
GL11174304+3116484 169.42935 31.28013 810.00 -21.35
GL11183379+3115167 169.64082 31.25464 1087.36 -21.59
GL11191008+3245457 169.79200 32.76271 1506.61 -20.38
GL11202515+2954278 170.10480 29.90774 1174.90 -20.88
GL11232784+3405097 170.86600 34.08604 707.95 -20.27
GL11242280+2953560 171.09500 29.89890 809.10 -20.89
GL11244200+2955429 171.17500 29.92861 812.83 -20.32
GL11253911+3836228 171.41296 38.60636 941.89 -22.00
GL11260336+3244349 171.51400 32.74305 977.24 -20.70
GL11265280+2958170 171.72000 29.97141 1845.02 -21.04
GL11273359+3242157 171.89000 32.70438 1230.27 -21.12
GL11282141+3533117 172.08923 35.55327 748.17 -19.45
GL11290455+3830439 172.26900 38.51222 717.79 -21.19
GL11294935+3832085 172.45566 38.53570 941.89 -21.59
GL11311264+4006405 172.80270 40.11127 981.75 -20.04
GL11313984+3242486 172.91600 32.71352 787.05 -20.85
GL11323541+3833081 173.14757 38.55227 1096.48 -22.05
GL12161103+5213363 184.04600 52.22675 794.33 -20.53
GL11340768+3832501 173.53200 38.54725 1306.17 -21.92
GL12175544+5216227 184.48100 52.27298 776.25 -20.42
GL11353119+4004324 173.88000 40.07567 883.08 -21.28
GL11360503+3404314 174.02100 34.07541 835.60 -21.32
GL12205063+5216081 185.21100 52.26894 741.31 -20.57
GL11372663+3410224 174.36100 34.17291 765.60 -21.07
GL11381078+3237525 174.54495 32.63127 1445.18 -21.45
GL11383815+3409182 174.65900 34.15507 887.16 -20.99
GL12254079+5212081 186.42000 52.20226 1753.88 -20.21
GL11405184+3837411 175.21600 38.62809 928.97 -21.39
GL11423048+4145194 175.62700 41.75539 879.02 -20.77
GL11432190+3836117 175.84125 38.60326 831.76 -20.74
GL11451542+4010510 176.31427 40.18086 835.60 -21.90
GL11460106+3708414 176.50442 37.14485 772.68 -21.26
GL12325831+5218196 188.24300 52.30547 920.45 -21.15
GL11471752+3708009 176.82300 37.13359 870.96 -21.06
GL11485255+3834044 177.21899 38.56791 1142.88 -23.09
GL12364559+5215104 189.19000 52.25291 1967.89 -21.09
GL11500888+4139104 177.53700 41.65289 1520.55 -21.18
GL11504799+4145473 177.70000 41.76315 1202.26 -20.67
GL12411615+5210433 190.31731 52.17871 866.96 -21.64
GL11535855+4142517 178.49400 41.71437 1202.26 -21.09
GL11551752+4141042 178.82300 41.68452 1923.09 -20.95
GL11563894+4144316 179.16226 41.74212 856.80 -21.34
GL12480368+5212512 192.01537 52.21424 801.68 -21.17
GL12491008+5216130 192.29200 52.27029 1312.20 -19.30
GL12500647+5212217 192.52700 52.20604 1148.15 -19.07
GL12013312+4500402 180.38800 45.01119 1122.02 -21.25
GL12383383+6324313 189.64100 63.40872 1142.88 -21.11
GL12512040+6327460 192.83500 63.46280 1520.55 -20.64
GL13021061+6323070 195.54425 63.38530 757.94 -21.04
GL13023696+6326564 195.65400 63.44901 1706.08 -21.58
GL13065831+6329158 196.74300 63.48774 711.21 -20.55
GL13080888+6329410 197.03700 63.49473 990.83 -20.82
GL13105951+6328098 197.74800 63.46939 920.45 -20.71
GL13115964+6327508 197.99854 63.46413 820.35 -20.54
GL11351223+3055560 173.80100 30.93224 779.83 -20.81
GL11361537+3234536 174.06406 32.58158 783.43 -21.09
GL11445208+4313474 176.21700 43.22984 843.34 -21.00
GL11490359+4319077 177.26500 43.31882 1202.26 -21.53
GL11492197+4315182 177.34157 43.25508 1570.36 -21.08
GL11500000+4316195 177.50000 43.27210 1995.26 -20.64
GL11512793+4314211 177.86641 43.23922 1185.77 -21.62
GL11535384+4317028 178.47437 43.28413 895.88 -21.12
GL11543082+4316491 178.62843 43.28031 959.40 -21.36
GL11560672+4317057 179.02800 43.28493 1682.67 -20.29
GL12052448+5016365 181.35200 50.27681 1786.49 -20.93
GL12064943+5020196 181.70600 50.33879 1887.99 -20.19
GL12105687+5016229 182.73700 50.27304 1091.44 -21.59
GL12110072+5018440 182.75300 50.31224 1786.49 -20.70
GL12130215+5018304 183.25900 50.30845 1778.28 -20.51
GL12180312+5017281 184.51300 50.29115 920.45 -21.07
GL12184511+5019371 184.68800 50.32698 1931.97 -20.10
GL12230144+5021385 185.75600 50.36072 1976.97 -20.63
GL12305640+5016360 187.73500 50.27667 928.97 -20.88
GL12320312+5014034 188.01300 50.23428 1294.20 -20.70
GL12580169+6047594 194.50708 60.79984 741.03 -21.48
GL11392756+3719243 174.86485 37.32344 899.50 -21.50
GL11334729+3604444 173.44705 36.07900 789.20 -21.36
GL11525752+4641541 178.23969 46.69838 839.46 -20.42
GL11533600+4644184 178.40000 46.73847 1584.89 -20.04
GL11541128+4641379 178.54703 46.69387 1164.13 -21.04
GL11582214+4644476 179.59227 46.74657 711.21 -20.41
GL11595448+4639452 179.97700 46.66258 891.25 -20.90
GL12041986+4636572 181.08276 46.61591 1023.29 -21.03
GL12051367+4638580 181.30698 46.64945 1342.76 -23.44
GL12075376+4643595 181.97400 46.73322 963.83 -20.70
GL12000690+4828271 180.02879 48.47421 776.25 -20.46
GL12014176+4825448 180.42404 48.42912 1004.62 -21.35
GL12042423+4828462 181.10100 48.47952 758.58 -20.35
GL12083187+4828113 182.13283 48.46982 779.83 -21.42
GL12102807+4822338 182.61700 48.37606 883.08 -20.50
GL12143407+5616470 183.64200 56.27973 794.33 -20.77
GL12161391+5613106 184.05800 56.21962 1803.02 -20.57
GL12241631+5613344 186.06800 56.22624 1729.82 -20.78
GL12322759+5610432 188.11500 56.17868 1534.62 -20.86
GL12371488+5616246 189.31200 56.27351 1845.02 -20.28
GL11255475+3523490 171.47813 35.39696 924.70 -19.91
GL12472087+5610204 191.83700 56.17234 1659.59 -21.40
GL12500023+5617017 192.50100 56.28381 1614.36 -20.93
GL12514608+5617097 192.94200 56.28603 1142.88 -20.54
GL12570551+5616176 194.27300 56.27158 721.11 -20.69
GL12584511+5619241 194.68800 56.32337 1563.15 -20.63
GL12595831+5612281 194.99300 56.20783 912.01 -20.78
GL13003240+5614237 195.13500 56.23993 912.01 -20.82
GL12413768+5838105 190.40700 58.63627 711.21 -20.47
GL12173888+5407109 184.41200 54.11970 1191.24 -20.24
GL12201511+5410198 185.06300 54.17219 1061.70 -21.63
GL12205544+5408346 185.23100 54.14295 1520.55 -20.66
GL12222951+5413352 185.62300 54.22647 1412.54 -21.55
GL12253815+5410070 186.40900 54.16863 1324.34 -21.27
GL12304056+5405318 187.66900 54.09219 1737.80 -20.31
GL12325015+5411488 188.20900 54.19690 1374.04 -21.37
GL12360815+5408298 189.03400 54.14163 1132.40 -21.05
GL12420359+5413429 190.51500 54.22859 933.25 -21.05
GL12553936+5409295 193.91400 54.15820 950.61 -20.95
GL12481938+6047470 192.08077 60.79639 839.46 -21.19
GL12504680+6048486 192.69500 60.81352 1106.62 -20.79
GL12561511+6048469 194.06300 60.81304 1294.20 -21.00
GL13084823+6050536 197.20100 60.84824 1614.36 -21.32
GL12240888+5824382 186.03700 58.41063 839.46 -21.28
GL12304991+5829517 187.70800 58.49771 851.14 -21.06
GL12493954+5827430 192.41478 58.46196 916.94 -21.76
GL12520095+5828182 193.00400 58.47173 758.58 -20.29
GL12532807+5828573 193.36700 58.48259 701.46 -21.11
GL12544049+5826434 193.66875 58.44541 713.06 -21.30
GL12550424+5831553 193.76767 58.53205 690.82 -21.16
GL12485304+6324301 192.22100 63.40837 765.60 -20.68
GL12501704+6325203 192.57100 63.42231 790.68 -21.02
GL12542400+6318532 193.60000 63.31478 1520.55 -20.85
GL12570095+6319139 194.25400 63.32054 1570.36 -21.04
GL13003768+6318540 195.15700 63.31500 1698.24 -19.99
GL13031608+6316132 195.81700 63.27036 899.50 -20.89
GL13045352+6322417 196.22300 63.37826 1690.44 -20.52
GL13084792+6319558 197.19969 63.33217 798.00 -20.38
GL13142975+6317121 198.62400 63.28671 1644.37 -20.58
GL13163456+6324305 199.14400 63.40848 758.58 -20.59
GL11295368+3436315 172.47368 34.60876 920.45 -21.03
GL12171344+5207308 184.30600 52.12525 1737.80 -19.94
GL12181943+5204028 184.58100 52.06745 1037.53 -21.30
GL12203095+5208509 185.12900 52.14748 794.33 -20.55
GL12253431+5202056 186.39300 52.03491 862.98 -21.24
GL12351511+5203363 188.81300 52.06011 1406.05 -20.24
GL12352949+5208338 188.87288 52.14275 1086.43 -21.33
GL12383239+5209245 189.63496 52.15683 1061.70 -21.35
GL12394272+5203284 189.92800 52.05791 1164.13 -21.15
GL11145936+3313370 168.74736 33.22697 790.68 -21.08
GL11192021+3232233 169.83421 32.53981 702.51 -21.40
GL11195136+2900424 169.96400 29.01179 1761.98 -20.53
GL11211707+3355598 170.32114 33.93328 972.75 -20.02
GL11244092+2945268 171.17052 29.75747 977.24 -20.84
GL11253517+3611178 171.39655 36.18830 954.99 -19.98
GL11260950+3606047 171.53961 36.10132 1037.53 -20.16
GL11265302+3230419 171.72092 32.51166 990.83 -20.80
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GL11290768+3910229 172.28200 39.17303 711.21 -21.04
GL11293907+3400049 172.41280 34.00138 737.90 -21.07
GL11302940+3824033 172.62250 38.40094 746.91 -21.27
GL11310072+3822434 172.75300 38.37873 859.01 -21.37
GL11314319+3821127 172.93000 38.35353 851.14 -21.12
GL11323584+4039261 173.14935 40.65727 1101.99 -21.60
GL11331964+3906123 173.33186 39.10343 1056.82 -21.49
GL11334767+4041113 173.44865 40.68650 1101.54 -20.70
GL11343523+3956143 173.64682 39.93732 1472.31 -20.92
GL11353180+4042553 173.88252 40.71538 955.04 -21.27
GL11364518+3818560 174.18829 38.31558 1127.20 -21.66
GL11371272+3653096 174.30300 36.88600 827.94 -21.01