{
  "bibcode": "2013GCN.14358....1S",
  "body": "V. Sudilovsky and J. Greiner (both MPE Garching) report on behalf of the \nGROND\nteam:\n\nBased on follow-up observations taken on 2013-03-29 (T+47 days after the \ninitial\nSwift trigger 548276; Oates et al., GCN 14195) of the source reported in GCN\n14196, we retract our classification of this object. Since there is no\nsignificant time variability associated with this source, we conclude \nthat it\ncannot be the afterglow of GRB 130211A.\n\nThe final magnitudes of this source (all AB) are:\n\ng' > 24.0 mag,\nr' = 23.5 +/- 0.1 mag,\ni' = 22.3 +/- 0.1 mag,\nz' = 21.7 +/- 0.1 mag,\nJ = 20.9 +/- 0.2 mag,\nH = 20.5 +/- 0.2 mag, and\nK > 20.2 mag.\n\nWe note that the large r'-i' color is consistent with the 4000 Angstrom \nbreak\nexpected from a galaxy at z~0.8. However, we caution that at this time \nthere are\nnot enough data to make a definitive statement about this source.\n\nGiven magnitudes are calibrated against GROND zeropoints (g'r'i'z') as \nwell as\n2MASS field stars (JHK) and are not corrected for the expected Galactic\nforeground extinction corresponding to a reddening of E_(B-V)=0.53 mag \nin the\ndirection of the burst (Schlegel et al. 1998).",
  "circularId": 14358,
  "createdOn": 1364911440000,
  "email": "vsudilov@mpe.mpg.de",
  "subject": "GRB 130211A: Retraction of afterglow candidate",
  "submitter": "Vladimir Sudilovsky at MPE  <vsudilov@mpe.mpg.de>",
  "eventId": "GRB 130211A"
}