{
  "bibcode": "2021GCN.29320....1D",
  "body": "A. de Ugarte Postigo (HETH/IAA-CSIC, DARK/NBI), D.A. Kann (HETH/IAA-CSIC),\nC.C. Thoene (HETH), M. Blazek, and J. F. Agui Fernandez (both HETH/IAA-CSIC) \nreport:\n\nWe obtained spectroscopy of the host galaxy of GRB 200613A (Fermi-LAT \ndetection: Ohno et al. GCN #27931; Fermi GBM detection: Bissaldi & Lesage, \nGCN #27930; optical counterpart discovery: Kann et al. GCN #27935) with OSIRIS, \nmounted on the 10.4m GTC telescope (Roque de los Muchachos Observatory, \nLa Palma, Spain). The observation was performed on the 18 January 2021 with \nmean epoch at 00:02 UT (218.75 days after the burst) and consisted of 3x1200s \nexposures with grism R1000R, covering the range between 5100 and 10100 ��. \n\nThe spectrum is characterised by a continuum that is detected over the complete \nspectral range, with better SNR in the blue part of the spectrum, and has a strong \nemission feature that we identify as the [OII] 3727/3729 doublet, at a redshift of \n1.2280. At a similar redshift of 1.2255 we also identify absorptions due to FeII and \nMgII, that allow us to confirm the redshift, which we identify as that of GRB 200613A.",
  "circularId": 29320,
  "createdOn": 1610990978000,
  "email": "deugarte@iaa.es",
  "subject": "GRB 200613A: Host galaxy redshift from OSIRIS/GTC",
  "submitter": "Antonio de Ugarte Postigo at IAA-CSIC  <deugarte@iaa.es>",
  "eventId": "GRB 200613A"
}