{
  "bibcode": "2020GCN.27060....1V",
  "body": "A. F. Valeev (SAO-RAS), Y.-D. Hu, A. J. Castro-Tirado and E. \nFernandez-Garcia (IAA-CSIC), V. Sokolov (SAO-RAS), I. Carrasco and A. \nCastellon (UMA) and G. Lombardi (GRANTECAN, IAC, ULL), on behalf of a \nlarger collaboration, report:\n\nFollowing the detection of AT2020ciy/ZTF20aamvqxl, \nAT2020cjg/ZTF20aamvoxx and AT2020cje/ZTF20aamvtip (Kasliwal et al. GCNC \n27051) within the error area of the GW event S200213t (LVC, GCNC 27042), \nwe obtained optical spectra covering the range 3700-7400 A with the \n10.4m GTC telescope equipped with OSIRIS in La Palma (Spain) starting on \nFeb 13, 20:08 UT. Details follow:\n\nAT2020ciy/ZTF20aamvqxl, a magnitude r'=20.04 +/- 0.03 on 21:29UT is \nderived. The GTC spectrum is consistent with a SNIa at redshift z = \n0.1018 +/- 0.0005.\n\nAT2020cjg/ZTF20aamvoxx, a magnitude r'=18.19 +/- 0.07 on 20:33UT is \nderived. The GTC spectrum is consistent with a SNIa at redshift z = \n0.097 +/- 0.005.\n\nAT2020cje/ZTF20aamvtip, a magnitude r'=20.08 +/- 0.02 on 20:55UT is \nderived. The GTC spectrum is consistent with a SNIa at redshift z = \n0.1512 +/- 0.0005.\n\nTherefore we consider that AT2020ciy/ZTF20aamvqxl, \nAT2020cjg/ZTF20aamvoxx and AT2020cje/ZTF20aamvtip are unrelated to the \nS200213t GW alert.",
  "circularId": 27060,
  "createdOn": 1581635206000,
  "email": "ajct@iaa.es",
  "subject": "LIGO/Virgo S200213t: AT2020ciy/ZTF20aamvqxl, AT2020cjg/ZTF20aamvoxx and AT2020cje/ZTF20aamvtip 10.4m GTC spectroscopy",
  "submitter": "Alberto J. Castro-Tirado at IAA-CSIC  <ajct@iaa.es>",
  "eventId": "LIGO/Virgo S200213t"
}