{
  "bibcode": "2000GCN...778....1H",
  "body": "HST/STIS observations of the host galaxy of GRB 980329\n\nStephen Holland, Bjarne Thomsen (University of Aarhus),\nJens Hjorth, Johan Fynbo (University of Copenhagen),\nMichael Andersen (University of Oulu),\nGunnlaugur Bjornsson (University of Iceland),\nAndreas Jaunsen (ESO),\nPriya Natarajan (University of Cambridge, & Yale), and\nNial Tanvir (University of Hertfordshire)\n\n     We have used the Space Telescope Imaging Spectrograph (STIS) on\nthe Hubble Space Telescope to image the host galaxy of GRB 980329.  We\nobtained 8072 seconds of STIS/CCD images with the 50CCD (clear)\naperture and 5416 seconds with the F28X50LP (long pass) aperture.\nThis data was taken as part of the Survey of the Host Galaxies of\nGamma-Ray Bursts (Holland et al., GCN 698) approximately 880 days\nafter the burst occurred.  Combined images are now available at\n\"http://www.ifa.au.dk/~hst/grb_hosts/data/index.html\".  The drizzled\nF28X50LP image is based on two orbits worth of data, and will be\nupdated when the data from the third orbit is available.\n\n       A preliminary determination of the location of the radio\ntransient VLA J070238.0+385044 associated with GRB 980329 (Taylor et\nal. 1998, ApJL, 502, L115), based on the astrometry of three USNO-A2.0\nstars, is (X,Y) = (1039,1027) where the three-sigma uncertainty in the\nastrometric solution is 20 drizzled STIS pixels (0.5 arcsec).  There\nis a faint, extended object at (X,Y) = (1031,999) in our drizzled\n50CCD image.  This object is also visible in the F28X50LP image.  The\nobject is approximately three sigma southwest of the position of the\nGRB, and is the best candidate for the host galaxy of GRB 980329.  An\nimage showing the location of the galaxy and the GRB is available at\n\"http://www.ifa.au.dk/~hst/grb_hosts/data/grb980329cd.gif\".  The\nprobable host galaxy has AB magnitudes, in an aperture of radius 0.25\narcsec, of CL = 28.6 +/- 0.3 and LP = 28.1 +/- 0.3.  If we assume that\nthe galaxy has a power-law spectrum then the preliminary Kron-Cousins\nR-band magnitude is R = 27.7 +/- 0.3.  We also derived a preliminary\ncalibration based on two stars from Rhoads et al. (GCN 157) and found\nR = 28.2 +/- 0.3.  These results are consistent with each other, and\nare consistent with the host magnitude being 26.8 < R < 29, as\ndetermined by Gorosabel et al. (1999, A&A, 347, L31) from the decay of\nthe optical light curve.  The faintness of the galaxy is consistent\nwith it having a redshift of z > 2 (Fruchter 1999, ApJ 512, L1; Lamb\net al. 1999, A&AS, 138, 479), although we can not rule out z < 2 from\nthe HST/STIS data alone.",
  "circularId": 778,
  "createdOn": 967398962000,
  "email": "holland@ifa.au.dk",
  "subject": "HST/STIS observations of the host galaxy of GRB 980329",
  "submitter": "Stephen Holland at IFA, U of Aarhus  <holland@ifa.au.dk>",
  "eventId": "GRB 980329"
}