{
  "bibcode": "2008GCN..7621....1T",
  "body": "N. R. Tanvir (U. Leicester), D. A. Perley (UC Berkeley),\nA. J. Levan (U. Warwick), J. S. Bloom (UC Berkeley),\nA. S. Fruchter (STScI) and E. Rol (U. Leicester) report:\n\nWe obtained a further epoch of observations of GRB 080319B with\nGemini-North/GMOS on April 14 UT. These observations yielded the\nfollowing magnitudes: g=25.80+/-0.09, r=24.93+/-0.07, i=24.22+/-0.05.\n\nAlthough the r-band magnitude is consistent with a continued power-law\ndecline in flux, the source is now clearly much redder than it was at\nearly times, suggesting it is likely contaminated by light from a host\ngalaxy and/or associated supernova.  The g-band observation, which\nwould be less contaminated by any SN light, indicates a steeper\ndecline which may be consistent with a break in the underlying\nafterglow light curve (GCN 7567).\n\nThe absence of any extended emission in the previous HST observations\n(GCN 7569) argues against a significant host contribution, although a very\ncompact host is not ruled out.\n\nFurther analysis is ongoing.\n\nWe thank Gemini staff astronomers, particularly Sandy Leggett, for\ntheir support in obtaining these observations.",
  "circularId": 7621,
  "createdOn": 1208299011000,
  "email": "nrt@ast.cam.ac.uk",
  "subject": "GRB 080319B: Continued Gemini-N monitoring",
  "submitter": "Nial Tanvir at IofA U.Cambridge  <nrt@ast.cam.ac.uk>",
  "eventId": "GRB 080319B"
}