{
  "bibcode": "2001GCN..1061....1F",
  "body": "A. Fruchter and M. Metzger report for a larger HST GRB Collaboration:\n\nThe field of GRB 000418 was re-observed by the Hubble Space Telescope\nstarting on UT 2001 Feb 11.64 using the STIS camera in open (50CCD)\nmode.  The individual exposures were combined using Drizzle for a total\nexposure time of 5120 s.\n\nWhen this image is subtracted from that obtained by HST on 2000 June\n4.17 a small residual of magnitude R~28 is found at the position of the\ncompact galaxy believed to be the host galaxy (GCN 669); however, the\nresidual is sufficiently faint to be consistent with no detection at\nabout the 2 sigma level.  Taking into account the varying brightness of\nthe host galaxy we find an upper limit to the brightness of the OT on\n2000 June 4.2 of R > 27.5.\n\nThis upper limit on the R-band flux implies that the decay of the\noptical transient steepened to at least t ^ -1.75 to -2 at late times,\nin agreement with the result obtainted primarily from radio data by\nBerger et al (20001, astro-ph/0102278).\n\nThe images of the STIS field, with transient location indicated, can be\nseen at http://www.stsci.edu/~fruchter/GRB/000418.\n\nThis message may be cited.",
  "circularId": 1061,
  "createdOn": 989703442000,
  "email": "fruchter@stsci.edu",
  "subject": "GRB000418:  HST/STIS Second-epoch Observations",
  "submitter": "Andrew S. Fruchter at STScI  <fruchter@stsci.edu>",
  "eventId": "GRB 000418"
}