{
  "bibcode": "2007GCN..6666....1C",
  "body": "S. Covino (INAF/OABr), S. Piranomonte (INAF/OAR), S.D. Vergani (DIAS and\nDCU), P. D'Avanzo (INAF-OABr), L. Stella (INAF/OAR), report on behalf of\nthe MISTICI collaboration:\n\nWe observed the afterglow of GRB 070724 (Ziaeepour et al., GCN 6654)\nwith the ESO-VLT equipped with FORS2. Starting on 2007 Jul 25.3735 UT\n(22.1 hr after the trigger), we acquired 10 minutes of imaging in the I\nband. Inside the XRT error circle (Page & Ziaeepour, GCN 6659), we\ndetect both objects reported by Bloom (GCN 6658) and Cenko et al. (GCN\n6664).\n\nWhen compared with the photometry reported by Cenko et al. (GCN 6664),\nnone of the objects seems to have faded. The faintest object is\npointlike (seeing of 0.7\").\n\nWe also took two 10-min spectra with VLT+FORS2. Based on detection of [OII] 3727\nHbeta and [OIII] 4959,5007, we confirm the redshift z=0.457 proposed by Cucchiara\net al. (GCN 6665).\n\nWe thank Brad Cenko for very useful discussion.\n\n-------------------------------------------------\nThis mail sent through IMP: http://horde.org/imp/",
  "circularId": 6666,
  "createdOn": 1185369672000,
  "email": "piranomonte@mporzio.astro.it",
  "subject": "GRB 070724: optical observations",
  "submitter": "Silvia Piranomonte at OAR  <piranomonte@mporzio.astro.it>",
  "eventId": "GRB 070724"
}