{
  "bibcode": "2000GCN...594....1F",
  "body": "A. Fruchter and J. Rhoads (STScI) report:\n\nThe field of the presumed afterglow of GRB 000301C was re-oberved with\nthe NASA IRTF and NSFCam in the K' band (2.1) microns on UT March\n5.61.  We use our calibration from GCN 586 and comparison to the\nbrighter star ~6\" to the W for photometry.  We find that the presumed\nOT is now fainter than the reference star by 2.04 mag, so that\nK'=18.00.  The formal error from photon statistics is 0.05 mag.  The\ntotal error on the relative magnitude might be as large as 0.07 mag,\nand the total error on the absolute magnitude as large as 0.10 mag.\nRelative photometry of five other sources in the field shows no\nvariation with respect to the bright star greater than 1.5 sigma.\n\nThe transient has therefore declined by 0.35 +- 0.08 mag in K' between\nUT 4.64 March and 5.61 March.  This is in contrast with a decline of\n0.13 +/- 0.05 mags between 3.55 and 4.64 March (GCN 586 and 587).\n\nThe slow-down in the rate of decline in the R band over the same time\nspan (Veillet GCN 588) suggests a remarkable decoupling of the optical\nand near-infrared behavior of this transient.\n\nThe candidate host is 1\" W (not E as incorrectly reported in GCN 586)\nand 2\"N of the OT.  It is the same object reported by Veillet in GCN\n592.  This galaxy has colors of order R-K'=5, J-K'=1; however, the\ncolor must be considered highly uncertain until better comparison of\nthe optical and infrared images can be made.",
  "circularId": 594,
  "createdOn": 952325603000,
  "email": "fruchter@stsci.edu",
  "subject": "GRB 000301C: K' Observations",
  "submitter": "Andrew S. Fruchter at STScI  <fruchter@stsci.edu>",
  "eventId": "GRB 000301C"
}