{
  "bibcode": "2008GCN..7524....1T",
  "body": "I. Tanaka, T.-S. Pyo, T. Hattori, K. Aoki (Subaru, NAOJ), C. Tokoku,\nT. Yamada (Tohoku U), K. Ohta (Kyoto U), and N. Kawai (Tokyo Tech)\nreport on behalf of the Subaru GRB team:\n\nWe observed the field of GRB 080325 (Vetere et al., GCN 7512) with\nMOIRCS on the Subaru Telescope in J and Ks bands starting at 12:51 UT,\nMarch 25, about 8.7 hours after the trigger.  The observation lasted\nuntil 15:43 UT with effective exposures of 18 min in J band and 80 min\nin Ks band.  We detected a faint extended object (Ks=19.5) in the\nenhanced Swift XRT error circle (Osborne et al., GCN 7513).  We\nmeasure the coordinates of its center as:\n\n18:31:34.24 +36:31:24.3 (J2000, uncertainty 0\".3).\n\nThere seemed to be a bright spot at the north end of this object.\n\nWe performed another set of observation with MOIRCS at March\n26.5-26.7 in Ks and J bands.  We confirmed that the north spot of the\nsource had faded significantly, and the total magnitude of the source\nhad faded by 0.5 mag.\n\nBased on the positional coincidence and the fading behavior, we\nsuggest that the faint extended source is the host galaxy of GRB\n080325, and the spot in the north was the afterglow.\n\nThe source 6\" south of the enhanced Swift-XRT error circle reported by\nUpdike et al. (GCN 7515) was also present in our image, and we measure\nits magnitude at ~14:00 UT, March 25 (10 hours after the trigger) as:\n\nJ = 18.62 +/- 0.03,\n\nconsistent with the magnitude reported by Clemens et al. (GCN 7520).  \nThus it is not likely to be the afterglow of the GRB.",
  "circularId": 7524,
  "createdOn": 1206600655000,
  "email": "nkawai@hp.phys.titech.ac.jp",
  "subject": "GRB 080325: Subaru detection of NIR afterglow candidate",
  "submitter": "Nobuyuki Kawai at Tokyo Tech  <nkawai@hp.phys.titech.ac.jp>",
  "eventId": "GRB 080325"
}