GRB 991216 follow-up work

S. G. Djorgovski, S. R. Kulkarni, J. S. Bloom, A. Dierks, F. Harrison (CIT), R. Goodrich (CARA), and D. A. Frail (NRAO), on behalf of the Caltech-CARA-NRAO GRB collaboration:


GCN Circ. #510: Detection of the Host and/or Absorber Galaxy

GCN Circ. #497: GRB 991216 Optical Spectroscopy/Imaging

GCN Circ. #477: GRB 991216 Optical Observations



CCD image in the R band obtained at the Keck-II telescope on UT 1999 Dec 29.41. The field shown is approximately 19.6 arcsec square, and the image is tilted w.r.t. the standard orientation by about 7.2 degrees. Galaxy A (R ~ 24.5 mag) is the probable host galaxy of the burst.


A larger field, 78.3 arcsec square. The OT and the galaxies are circled.