{
  "bibcode": "2019GCN.25571....1L",
  "body": "O. Lopez-Cruz (INAOE), A. J. Castro-Tirado (IAA-CSIC), L. Macri \n(TAMU),A. F. Valeev (SAO-RAS), E. Rios-Lopez (INAOE), Y.-D. Hu \n(IAA-CSIC), M. Diaz (UTRGV), E. Fernandez-Garcia (IAA-CSIC), E. Troja \n(UMD), A. Castellon (UMA), Chavushyan (INAOE), D. A. Kann \n(HETH/IAA-CSIC) and J. Font Serra (GRANTECAN, IAC,ULL), on behalf of \nthree larger collaborations (including TOROS), report:\n\nFollowing the detection of DG19qabkc/AT2019nqc and DG19ayfjc/AT2019nqz \n(Andreoni et al., GCNC 25362) within the error area of the GW event \nS190814bv (LVC, GCNC 25324), we obtained imaging and optical spectra \ncovering the range 3700-10000 A with the 10.4m GTC telescope equipped \nwith OSIRIS at La Palma (Spain), on Aug 19 and Aug 21.\n\nDG19ayfjc/AT2019nqz is located closer than 0.5 arcsec to the center of \nits host galaxy. On the stacked image with an exposure time of 3x10sec \nwe could not detected the transient itself. From the emission lines of \nthe host galaxy, a redshift z = 0.1076 +/- 0.0005 is measured, outside \nthe expected LVC redshift range. The slit also covered the transient \nposition, but no broad lines are detected.\n\nDG19aqbkc/AT2019nqc spectroscopy reveals narrow galaxy lines at redshift \n  0.078 +/- 0.001. Cross-correlating the transient spectrum (broad lines) \nwith supernova template spectra in SNID (Blondin & Tonry, 2007), we find \na good match to the spectra of SNIIP at about week after maximum at same \nredshift, about a week after maximum at the same redshift in agreement \nwith the result reported by Buckley et al. (GCNC 25481).\n\nTherefore we consider both DG19qabkc/AT2019nqc and DG19ayfjc/AT2019nqz\nto be unrelated to the GW event S190814bv.\n\n[GCN OPS NOTE(31aug19): In the first sentence, \"DG19aqbkc/AT2019nqc\"\nwas changed to \"DG19qabkc/AT2019nqc\".  In the last sentence,\n\"DG19aqbkc/AT2019nqc and DG19aqbkc/AT2019nqc\" was changed to\n\"DG19qabkc/AT2019nqc and DG19ayfjc/AT2019nqz\".  We thank C. Balcon (ISSP)\nfor his comments.",
  "circularId": 25571,
  "createdOn": 1567161866000,
  "email": "ajct@iaa.es",
  "subject": "LIGO/Virgo S190814bv: AT2019nqc and AT2019nqz 10.4m GTC spectroscopy",
  "submitter": "Alberto J. Castro-Tirado at IAA-CSIC  <ajct@iaa.es>",
  "eventId": "LIGO/Virgo S190814bv"
}