{
  "bibcode": "2008GCN..7749....1P",
  "body": "D. A. Perley (UC Berkeley), J. S. Bloom (UCB), A. J. Levan (U. Warwick), \nW. Li (UCB), N. R. Tanvir (U. Leicester), N. R. Butler (UCB),  H-W. Chen \n(U. Chicago), R. Chornock (UCB), J. X. Prochaska (UCO/Lick), C. D. \nBailyn (Yale), A. Bunker (U. Exeter), R. Chornock (UCB), B. Cobb (Yale), \nP. B. Hall (York U.), A. V. Filippenko (UCB), N. Gehrels (NASA/GSFC), K. \nGlazebrook (Swinburne), J. Granot (U.  Hertfordshire), K. C. Hurley \n(UCB), D. Kocevski (UCB), B. Metzger (UCB),  M. Modjaz (UCB), A. Miller \n(UCB), W. Lee (I. de Astronomia), S. Lopez (U. Chile), J. Norris \n(NASA/Ames), P. E. Nugent (LBNL), M. Pettini (U. Cambridge), D. \nPoznanski (UCB), A. L. Piro (UCB), E. Quataert (UCB), E. Ramirez-Ruiz \n(UCSC), J. Shiode (UCB), and T. Sakamoto (GSFC/UMBC) report:\n\nFurther to GCN 7703 (Bloom et al.), we obtained additional imaging using \nthe Hubble Space Telescope (+WFPC2) of GRB 080503 (Mao et al., GCN 7665) \nstarting at 15:05:05 on UT 2008-05-12, about 9.2 days after the trigger. \nFour exposures of 1000s each were acquired in F606W and in F814W.\n\nThe afterglow has faded significantly since the previous HST epoch, and \nis not detected in either filter, or in a combined stack of the imaging \nfrom both filters.  The approximate limiting magnitude is F606W(AB) > \n28.0, confirming the rapid fading observed previously.  No sign of \nhost-galaxy emission is present in either filter.",
  "circularId": 7749,
  "createdOn": 1211167040000,
  "email": "dperley@astro.berkeley.edu",
  "subject": "GRB 080503: Further HST imaging",
  "submitter": "Daniel Perley at U.C. Berkeley  <dperley@astro.berkeley.edu>",
  "eventId": "GRB 080503"
}