{
  "email": "fruchter@stsci.edu",
  "version": 2,
  "eventId": "XRF 020427",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "bibcode": "2002GCN..1440....1F",
  "circularId": 1440,
  "body": "A. Fruchter, J. Rhoads, I. Burud, A. Levan (STScI), S. Patel, C.\nKouveliotou (MSFC), Javier Gorosabel (IAA-CSIC, Granada), J. Hjorth\n(Copenhagen U.)  report for the larger GOSH (Grb Optical Studies with\nHST) Collaboration:\n\nThe field of XRF/GRB 020427 (Zand et al., GCN 1383) was observed with\nHST on 10 June 2002 using the STIS CCD camera in open mode (50ccd).\nThe HST image was aligned to the USNO coordinate system using a\nwide-field image obtained by the Danish 1.5m telescope at La Silla on\n11 May 2002.  The position obtained by Fox et al. (GCN 1387, 1392) was\nthen located on the HST image.\n\nWe believe the combined error in the position of the X-ray transient\nand the transfer to the HST image is less than 0.\"45, one-sigma.   The\nXRF appears to lie on a galaxy with V magnitude of ~24.7.  This galaxy,\nwhich is extended in the NE-SW direction with a total length of ~1.\"5,\nhas two neighbors within a few arseconds of similar magnitude and\nmorphology, as well as a number of fainter neighbors.   The position\nobtained by Fox et al. places the GRB preferentially towards an end of\nthe galaxy.  If we use only the header of the Chandra image to do the\nalignment, we find a location near a bright knot on the apparent host,\nabout one-sigma from the Fox position.   Images taken at a later date\ncould allow a search for an optical counterpart.\n\nObservations of this field have also been undertaken independently at\nthe VLT (see the accompanying GCN 1439, Castro-Tirado et al.).  The VLT\nobservations show the complex of the three similar galaxies to be blue,\nwhich is consistent with observations of GRB hosts in general (Fruchter\net al., Ap J. 519L, 13, 1999).\n\nImages of the field are available at\n\nhttp://www.stsci.edu/~fruchter/GRB/020427",
  "createdOn": 1024984905000,
  "subject": "The Probable Host Galaxy of GRB/XRF 020427",
  "submitter": "Andrew S. Fruchter at STScI  <fruchter@stsci.edu>",
  "editedOn": 1777052633617
}