{
  "bibcode": "2020GCN.27119....1P",
  "body": "Gregory S.H. Paek (SNU), Myungshin Im (SNU), Hyun-Il Sung (KASI), Gu Lim\n(SNU), Joonho Kim (SNU), Sungyong Hwang (SNU), Bomi Park (SNU), Sophia Kim\n(SNU), Changsu Choi (SNU), Chung-Uk Lee (KASI), Seung-Lee Kim (KASI), Hyung\nMok Lee (KASI), on behalf of GECKO team\n\n We continued follow-up observation for host galaxy candidates (Paek et al,\nGCN #27067) with the 1.0-m telescope at the Lemonsan Optical Astronomical\nObservatory(LOAO), the 1.0-m telescope at the Deokheung Optical Astronomy\nObservatory(DOAO), and the 0.61-m telescope ate the Sobaeksan Optical\nAstronomy Observatory(SOAO) in the initial and updated localization area of\nS200213t (Singer et al, GCN #27042) and overlapped neutrino detection area\n(Hussain et al, GCN #27043).\n\n Each image was taken in R-band with 30 minutes exposure time. No obvious\ntransient has been identified. The list of the inspected targets is given\nbelow, and upper limit(UL) is for 3-sigma detection.\n\nOBSERVATORY          NAME          DISTANCE[Mpc]         DATE-OBS    DEL_JD\nFILTER  UL[AB]   NOTE\n----------- ---------------------- ------------- ------------------- ------\n------ ------- --------\n       LOAO               PGC11312           169 2020-02-14T02:37:28  0.93\n      R  21.676 neutrino\n       LOAO               UGC02483            91 2020-02-14T04:04:08  1.00\n      R  21.511 neutrino\n       LOAO 2MASS+03014097+3153413            97 2020-02-14T04:43:56  1.02\n      R  21.163 neutrino\n       LOAO 2MASS+03012583+3135093           254 2020-02-14T03:15:37  0.96\n      R  21.626 neutrino\n       LOAO 2MASS+00585413+5236357           138 2020-02-15T03:30:47  1.97\n      R  20.945     -\n       LOAO 2MASS+01154286+5559475           174 2020-02-15T04:15:28  2.0\n     R  21.327     -\n       LOAO                PGC7302           100 2020-02-15T04:50:59  2.02\n      R  20.751     -\n       LOAO 2MASS+01192705+5831151           154 2020-02-15T02:37:38  1.93\n      R  20.967     -\n       LOAO 2MASS+01183038+5156442           127 2020-02-16T03:50:58  2.99\n      R   21.21     -\n       LOAO              PGC137452           179 2020-02-16T03:15:08  2.96\n      R   21.15     -\n       LOAO                PGC7302           100 2020-02-16T02:36:58  2.93\n      R   21.06     -\n       LOAO              PGC137873           174 2020-02-16T04:35:36  3.02\n      R  20.952     -\n       LOAO                NGC0020            77 2020-02-18T02:35:55  4.9\n     R  20.839     -\n       LOAO 2MASS+00583689+5137088           121 2020-02-18T03:15:05  4.96\n      R  21.517     -\n---------------------------------------------------------------------------------------------------\n       DOAO               PGC11312           169 2020-02-14T12:05:30  1.32\n      R  21.016 neutrino\n       DOAO 2MASS+03012583+3135093           254 2020-02-14T12:36:39  1.35\n      R   19.96 neutrino\n       DOAO               UGC02483            91 2020-02-14T13:01:41  1.36\n      R  18.646 neutrino\n---------------------------------------------------------------------------------------------------\n       SOAO               PGC11312           169 2020-02-14T10:27:54  1.26\n      R  21.432 neutrino\n       SOAO 2MASS+03012583+3135093           254 2020-02-14T10:59:41  1.28\n      R  21.332 neutrino\n       SOAO               UGC02483            91 2020-02-14T11:33:53  1.30\n      R  21.062 neutrino\n       SOAO 2MASS+03014097+3153413            97 2020-02-14T12:07:19  1.33\n      R   20.88 neutrino\n\nWe thank the LOAO opertator for performing the observation.\n\nGravitational-wave EM Counterpart Korean Observatory (GECKO) is a network\nof 10+ 0.5m to 1m class telescopes over the world.",
  "circularId": 27119,
  "createdOn": 1582015018000,
  "email": "shpaek@astro.snu.ac.kr",
  "subject": "LIGO/Virgo S200213t: No EM counterparts found from continued GECKO observation of host galaxy candidates",
  "submitter": "Gregory SungHak Paek at SNU  <shpaek@astro.snu.ac.kr>",
  "eventId": "LIGO/Virgo S200213t"
}