{ "bibcode": "2019GCN.24315....1X", "createdOn": 1556412538000, "eventId": "LIGO/Virgo S190425z", "editedBy": "Judith Racusin at NASA/GSFC on behalf of Leo P. Singer at NASA/GSFC ", "email": "xlp@nao.cas.cn", "editedOn": 1731773713400, "subject": "LIGO/Virgo S190425z: SVOM/GWAC-F60A observations", "format": "text/plain", "circularId": 24315, "version": 2, "body": "L.P. Xin (NAOC), X.H. Han (NAOC), J.Y. Wei (NAOC), C. Wu (NAOC), \nD. Turpin (NAOC), J.G. Ducoin (CNRS/LAL), D. Corre (CNRS/LAL), \nL. Huang (NAOC), Y. Xu (NAOC), H.B. Cai (NAOC), J. Wang (NAOC), \nX.M. Lu (NAOC), Y.L. Qiu (NAOC), J.S. Deng (NAOC), L. Jia (NAOC), \nS.C. Zou (NAOC), S.F. Liu (NAOC), Q.C. Feng (NAOC), H.L. Li (NAOC), \nD.W. Xu (NAOC), Y.J. Xiao (NAOC), W.L. Dong (NAOC), Y.T. Zheng (NAOC), \nP. P. Zhang (NAOC), R.S. Zhang (NAOC), E.W. Liang (GXU), \nX.G. Wang (GXU), Z.G. Dai (NJU), X.Y. Wang (NJU), Y.G. Yang (HBNU), \nJ.R. Mao (YNAO), B. Cordier (CEA/AIM), S. Basa (CNRS/LAM), \nJ.L. Atteia (UPS/IRAP), D. Götz (CEA/AIM), A. Claret (CEA/AIM), \nN. Leroy (CNRS/LAL), C. Lachaud (CNRS/APC), S. Antier (CNRS/APC/CNES), \nS.N. Zhang (IHEP), B.B. Wu (IHEP), report on behalf of the SVOM Ground Follow-up Group:\n\nWe observed the LIGO/Virgo trigger S190425z with GWAC-F60A.\nTwo 60cm GWAC-F60(A/B) are operated by Guangxi University and NAOC,\nCAS, at Xinglong Observatory. China. They are equipped with Standard\nJohnson filters and 2Kx2K Andor CCD (FOV~18x18 arcmin). GWAC-F60(A/B)\nare used for galaxy-targeted observations. The galaxies are selected\nfrom the GLADE catalog (Version 2.3, Dalya et al. 2018) in the probability\nskymap of GW event. All these galaxies were observed in clear band. \nThe weather was not good during the observations.\n\nThe first image was taken ~6 hours after the event trigger. No credible\nnew source was detected in our pipeline. A total number of\n80 galaxies were observed. The coordinates (J2000) of galaxies,\nthe observation time, the limit magnitude (3sigma) and telescopes \nare listed below:\n\n # Ra\t Dec start-obs(UTC) Limit (R) Telescope\n246.40900 16.45500 2019-04-25T14:07:30.157 16.86 F60A\n235.47600 28.13410 2019-04-25T12:26:20.678 20.16 F60A\n236.94100 28.64190 2019-04-25T13:38:20.485 18.81 F60A\n186.25200 28.55850 2019-04-25T12:14:11.215 20.25 F60A\n241.23600 23.93290 2019-04-25T13:09:22.662 16.66 F60A\n243.74100 21.93830 2019-04-25T13:49:55.528 14.15 F60A\n246.11400 19.48260 2019-04-25T13:44:10.488 16.35 F60A\n247.40100 15.65840 2019-04-25T14:03:29.676 17.11 F60A\n252.98900 4.38356 2019-04-26T15:14:39.330 20.03 F60A\n253.53600 -7.63537 2019-04-26T15:41:09.103 19.00 F60A\n248.25700 22.79720 2019-04-26T16:18:33.855 18.88 F60A\n246.40900 16.45500 2019-04-26T13:39:32.350 19.24 F60A\n242.31500 25.71250 2019-04-26T13:29:26.576 18.96 F60A\n101.82200 33.56730 2019-04-26T13:03:41.172 18.12 F60A\n213.21400 35.71070 2019-04-26T19:31:21.044 15.55 F60A\n252.26500 -17.64590 2019-04-26T18:17:23.676 15.12 F60A\n213.61300 36.40440 2019-04-26T19:12:15.038 16.48 F60A\n252.69500 4.60474 2019-04-26T15:10:41.648 18.50 F60A\n253.24500 2.40099 2019-04-26T15:06:31.427 18.98 F60A\n252.92700 -2.61525 2019-04-26T15:30:55.776 18.12 F60A\n251.59400 9.03763 2019-04-26T14:23:38.733 17.37 F60A\n188.92200 26.52300 2019-04-26T12:50:39.801 19.69 F60A\n236.90100 26.06370 2019-04-26T12:40:17.254 19.40 F60A\n252.71300 8.78387 2019-04-26T15:57:48.620 18.05 F60A\n216.14600 35.27980 2019-04-26T13:12:20.095 18.89 F60A\n256.23700 -1.53050 2019-04-26T19:27:31.002 14.74 F60A\n239.01600 24.44800 2019-04-26T18:58:18.867 16.39 F60A\n240.75100 27.01030 2019-04-26T12:36:02.920 18.67 F60A\n246.06300 20.18360 2019-04-26T14:06:52.457 18.67 F60A\n256.68100 -4.93311 2019-04-26T19:42:41.710 14.82 F60A\n236.97500 25.72940 2019-04-26T16:10:06.932 18.87 F60A\n189.55500 28.93690 2019-04-26T12:03:09.117 18.55 F60A\n203.60500 34.69040 2019-04-26T12:59:12.069 19.63 F60A\n240.68800 25.25220 2019-04-26T14:45:39.591 19.17 F60A\n251.85200 -20.14170 2019-04-26T18:25:26.961 13.73 F60A\n252.33700 -17.64450 2019-04-26T16:46:18.132 14.91 F60A\n254.52400 -21.27410 2019-04-26T18:29:34.531 13.66 F60A\n265.63300 0.21675 2019-04-26T18:54:30.920 13.77 F60A\n252.72300 -15.00400 2019-04-26T16:22:46.980 16.61 F60A\n217.50600 36.36090 2019-04-26T19:08:30.994 16.65 F60A\n242.40600 28.05180 2019-04-26T14:31:48.522 19.80 F60A\n258.11900 -9.12416 2019-04-26T16:26:50.153 16.71 F60A\n218.40500 35.96650 2019-04-26T14:11:05.568 19.82 F60A\n200.21300 43.96540 2019-04-26T12:26:20.960 19.19 F60A\n243.14800 29.48450 2019-04-26T19:16:03.251 16.82 F60A\n208.41000 36.13420 2019-04-26T13:33:42.807 19.49 F60A\n249.86000 11.21050 2019-04-26T14:27:45.663 19.03 F60A\n216.08600 36.46140 2019-04-26T12:16:57.909 19.57 F60A\n190.43600 35.06290 2019-04-26T13:08:04.914 19.41 F60A\n212.69800 35.91340 2019-04-26T12:08:27.646 19.09 F60A\n243.14800 29.48480 2019-04-26T18:42:22.185 16.77 F60A\n251.94600 -7.21269 2019-04-26T16:30:59.956 16.95 F60A\n203.64600 34.77790 2019-04-26T19:19:52.570 15.29 F60A\n253.27000 -16.29090 2019-04-26T18:13:21.035 15.42 F60A\n221.59100 32.78010 2019-04-26T13:20:54.590 20.53 F60A\n182.57600 26.43080 2019-04-26T14:19:29.899 20.04 F60A\n243.14700 29.36490 2019-04-26T19:35:09.298 15.77 F60A\n252.07700 6.31221 2019-04-26T14:53:56.092 18.74 F60A\n254.78000 -5.74199 2019-04-26T15:45:20.977 17.63 F60A\n253.60000 -9.88924 2019-04-26T16:01:51.545 16.91 F60A\n193.51000 29.60370 2019-04-26T13:25:15.579 19.72 F60A\n194.91500 53.34130 2019-04-26T12:12:42.478 20.34 F60A\n242.27700 24.87030 2019-04-26T18:46:29.445 15.58 F60A\n260.77200 12.69540 2019-04-26T16:05:56.399 17.81 F60A\n256.25200 -1.54133 2019-04-26T19:38:57.637 14.77 F60A\n253.72400 -16.95200 2019-04-26T16:50:26.458 14.38 F60A\n205.41500 55.67070 2019-04-26T16:14:20.651 19.45 F60A\n252.09000 6.22276 2019-04-26T14:49:46.057 18.45 F60A\n196.48300 53.65920 2019-04-26T16:35:23.719 18.93 F60A\n240.66900 37.35940 2019-04-26T12:21:33.662 19.43 F60A\n252.38800 6.01625 2019-04-26T14:57:55.285 18.43 F60A\n253.03200 -17.05380 2019-04-26T18:21:23.262 14.86 F60A\n254.50500 -1.82269 2019-04-26T15:26:51.357 17.91 F60A\n240.36900 22.42770 2019-04-26T14:15:09.801 19.36 F60A\n232.92900 40.86490 2019-04-26T13:16:36.533 20.10 F60A\n243.89800 19.45340 2019-04-26T18:50:43.803 15.42 F60A\n255.21800 2.10185 2019-04-26T15:18:42.705 18.77 F60A\n197.38900 53.49420 2019-04-26T12:31:38.012 20.40 F60A\n250.01400 15.88340 2019-04-26T14:02:46.419 19.04 F60A\n245.79700 16.93260 2019-04-26T13:58:39.077 19.32 F60A\n\n\nThis circular is citable.", "submitter": "Liping Xin at NAOC, SVOM " }