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GCN Circular 27070

Subject
LIGO/Virgo S200213t: No counterpart candidates from Nanshan-0.6m observations
Date
2020-02-14T18:53:26Z (4 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
D. Xu, Z.P. Zhu, 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:

In the night of 2020-02-13, we first observed the 16 NED galaxy fields 
of LIGO/Virgo S200213t (GCN #27042) + IceCube neutrino candidate (GCN 
#27043), as reported in GCN #27047, using the NEXT 0.6m optical 
telescope, located at Nanshan, Xinjiang, China. Observations started at 
13:19:16 UT and ended at 14:27:36 UT in the Sloan r-filter, and each 
field was imaged twice with 90 sec for each exposure. Typical limiting 
magnitude is r~19.0.

Subsequently we observed 120 GLADE galaxy fields that are selected 
according to the probability skymap of LIGO/Virgo S200213t, the galaxy 
distance within the 3sigma limit, the B-band absolute magnitude for the 
galaxy < -18, as well as the observable altitude > ~20 deg. Observations 
were again taken in the Sloan r-filter, with 90 sec for each exposure. 
Typical limiting magnitude is r~19.0.

The list of the observed galaxies is given below.

Galaxy_Name                     R.A.(deg)  Dec.(deg)  Dist(Mpc)    M_B
GL00410559+5020596	10.27333	50.34990	295.58	-20.30
GL01133253+5515015	18.38556	55.25044	288.89	-19.91
GL01034582+5730374	15.94093	57.51041	303.28	-20.28
GL01212232+5912170	20.34303	59.20474	234.82	-19.26
GL01060074+5732009	16.50312	57.53359	145.83	-20.30
GL00575274+4850369	14.46978	48.84361	251.04	-20.20
GL01242568+5912446	21.10700	59.21240	264.02	-20.55
GL00461573+5130239	11.56556	51.50666	287.05	-20.65
GL01174717+5159283	19.44656	51.99122	315.92	-20.53
GL01281451+5910375	22.06049	59.17711	120.19	-19.63
GL01230059+5512035	20.75249	55.20097	323.84	-20.41
GL01125842+5730428	18.24345	57.51190	215.37	-19.81
GL01143751+5725468	18.65629	57.42967	358.31	-20.85
GL00342296+4948170	8.59568	49.80473	66.74        -18.56
GL00530055+5020315	13.25232	50.34211	79.53	        -19.45
GL01273606+5515383	21.90027	55.26065	80.67	        -18.99
GL00592237+5131224	14.84322	51.52291	130.21	-18.04
GL01204709+5725326	20.19623	57.42573	281.89	-21.01
GL01384386+5911064	24.68276	59.18513	310.01	-20.87
GL00583640+5027498	14.65167	50.46384	289.90	-21.02
GL00331360+4645013	8.30671	46.75037	207.42	-19.70
GL01172389+6056245	19.34955	60.94017	324.08	-20.13
GL01011268+5027319	15.30283	50.45887	186.99	-20.50
GL01110139+5220280	17.75580	52.34112	327.98	-20.33
GL01344735+5157212	23.69732	51.95591	229.92	-19.98
GL01101769+5125501	17.57371	51.43060	246.46	-19.51
GL00475975+4948595	11.99897	49.81654	148.94	-20.17
GL01421791+5513022	25.57464	55.21729	205.59	-20.96
GL01433282+5510459	25.88677	55.17944	380.55	-20.50
GL01442052+5508501	26.08553	55.14726	284.44	-20.90
GL01183234+5551083	19.63478	55.85233	119.99	-19.91
GL00430939+4648314	10.78914	46.80874	299.44	-20.89
GL00435971+4648338	10.99882	46.80940	236.67	-20.77
GL00444381+4644478	11.18258	46.74663	211.81	-19.87
GL01184793+5127462	19.69974	51.46285	143.83	-20.29
GL01422918+5730133	25.62161	57.50372	107.60	-19.67
GL01144438+5027094	18.68492	50.45263	128.25	-18.68
GL00434180+5226314	10.92417	52.44206	151.92	-18.56
GL01172570+5022512	19.35710	50.38090	97.30	        -20.33
GL01252822+5130299	21.36761	51.50833	352.84	-20.49
GL00502343+5444363	12.59766	54.74343	93.31  	-19.30
GL00542554+4642347	13.60642	46.70965	176.06	-20.20
GL01540363+5728127	28.51515	57.47021	424.54	-20.79
GL00395816+4534239	9.99235	45.57333	213.80	-20.22
GL01213941+5315288	20.41425	53.25800	267.61	-21.55
GL01223711+5314207	20.65466	53.23909	136.21	-20.26
GL00410855+5316416	10.28565	53.27823	270.03	-19.76
GL00542451+5123343	13.60215	51.39287	104.03	-19.93
GL01294222+5023095	22.42590	50.38596	89.33 	-19.86
GL01122684+4949445	18.11187	49.82903	152.31	-20.34
GL01274813+5321445	21.95057	53.36239	339.92	-21.17
GL02004334+6059449	30.18060	60.99581	208.30	-21.30
GL01161034+4952100	19.04309	49.86946	301.02	-20.88
GL01052909+5224528	16.37125	52.41468	263.13	-20.53
GL01341630+5320302	23.56792	53.34174	169.84	-19.15
GL01082772+5222341	17.11551	52.37615	336.11	-20.44
GL01211814+4948037	20.32559	49.80104	315.85	-20.59
GL01372343+5317515	24.34764	53.29766	285.73	-19.61
GL01175368+5432325	19.47367	54.54237	215.24	-19.89
GL01131402+5226144	18.30846	52.43736	128.30	-20.23
GL01150037+5225564	18.75156	52.43236	112.42	-19.50
GL01434654+5316206	25.94392	53.27240	261.11	-21.47
GL00583960+5002425	14.66503	50.04516	85.01	        -20.69
GL01003319+5241549	15.13831	52.69859	267.84	-20.76
GL01221529+5224550	20.56373	52.41530	312.19	-21.23
GL01243181+5223493	21.13257	52.39705	324.90	-20.01
GL01252477+5222580	21.35322	52.38278	302.65	-20.54
GL01073402+5359379	16.89176	53.99387	304.19	-19.99
GL00562909+5224271	14.12124	52.40754	103.75	-18.63
GL00591838+5016187	14.82662	50.27186	131.54	-20.12
GL01305475+5412455	22.72814	54.21266	297.88	-20.38
GL01330184+5224545	23.25767	52.41515	257.42	-20.52
GL01245620+5432186	21.23418	54.53851	105.89	-20.52
GL01015265+5924475	15.46940	59.41321	184.57	-20.26
GL01050655+5929246	16.27733	59.49019	315.56	-20.42
GL01014789+5128138	15.44956	51.47051	261.00	-19.91
GL01115172+5928373	17.96553	59.47705	307.34	-20.45
GL00511775+5611426	12.82399	56.19517	295.41	-20.23
GL00530999+5615243	13.29166	56.25677	316.08	-20.37
GL01291424+5158552	22.30934	51.98203	318.34	-20.52
GL01281694+5929022	22.07060	59.48396	298.37	-19.92
GL01121331+5955414	18.05550	59.92818	291.49	-19.69
GL01262972+5923369	21.62386	59.39361	373.13	-20.53
GL01032872+5614324	15.86970	56.24234	180.66	-20.20
GL01423598+5417334	25.64994	54.29261	141.80	-20.87
GL01432226+5930019	25.84275	59.50054	328.61	-20.72
GL01040289+5919003	16.01205	59.31678	170.74	-19.38
GL01470616+5931206	26.77569	59.52240	113.26	-18.17
GL01561522+5932363	29.06344	59.54342	319.31	-20.48
GL01583167+5925229	29.63198	59.42304	305.33	-19.85
GL01412969+5612438	25.37374	56.21217	261.90	-19.35
GL01431008+5446598	25.79203	54.78328	330.75	-20.91
GL01502384+5613049	27.59936	56.21803	189.20	-20.09
GL01215887+5538133	20.49532	55.63703	96.39	        -19.16
GL01134004+6031353	18.41686	60.52649	91.70 	-19.07
GL01310388+5532096	22.76619	55.53601	195.38	-19.31
GL01313530+5534046	22.89710	55.56794	175.54	-19.30
GL01325027+5535520	23.20946	55.59779	159.76	-19.26
GL01231913+6029355	20.82972	60.49321	239.39	-19.72
GL01370732+5534325	24.28054	55.57571	249.07	-19.81
GL01384099+5534414	24.67079	55.57819	274.65	-20.88
GL01471291+5707276	26.80382	57.12435	381.46	-20.34
GL01405953+6021130	25.24806	60.35363	217.79	-20.11
GL01440860+5946120	26.03584	59.77003	215.23	-19.92
GL01451454+5949020	26.31060	59.81725	294.78	-20.34
GL01194420+6043069	19.93419	60.71859	259.04	-20.36
GL01383197+5652414	24.63321	56.87819	202.71	-19.02
GL01524731+5655069	28.19713	56.91860	301.75	-21.16
GL01575361+5843286	29.47340	58.72464	155.53	-20.85
GL01470751+5914576	26.78132	59.24934	297.45	-20.38
GL01344887+6043329	23.70365	60.72583	92.39	        -18.87
GL01531807+5915358	28.32532	59.25997	119.58	-20.78
GL01525926+5834286	28.24694	58.57464	204.72	-19.25
GL01554543+5822323	28.93932	58.37565	295.40	-20.61
GL01574657+5829567	29.44406	58.49910	386.86	-20.12
GL01532514+5812179	28.35478	58.20497	383.78	-20.43
GL01511041+5841163	27.79341	58.68787	408.56	-19.80
GL01590512+5843327	29.77135	58.72576	325.94	-20.08
GL01543478+5752397	28.64494	57.87772	310.87	-20.38
GL01580404+5858448	29.51685	58.97912	406.74	-20.55

Preliminary analysis doesn't reveal any credible optical counterpart in 
all the above galaxies. Full analysis is still ongoing.
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