The Host Galaxy of the Gamma--Ray Burst 971214

Details The Host Galaxy of the Gamma--Ray Burst 971214 The Host Galaxy of the Gamma--Ray Burst 971214

1998-07-21

arxiv.org/abs/astro-ph/9807212v3

Astronomy and Astrophysics

Astrophysics

LaTex, 10 pages, 3 figures, accepted to ApJL

Scientific paper

10.1086/311752

We report on Hubble Space Telescope (HST) observations of the host galaxy of GRB 971214, about four months after the burst. The redshift of the proposed host galaxy at z=3.418, combined with optical and radio observations of the burst afterglow, implies the extremely large isotropic energy release from the burst in gamma-rays of approximately 3x10^53 ergs, some two orders of magnitude higher than the previously commonly assumed numbers. The positional offset between the optical transient observed at the Keck telescope and the centroid of the proposed host galaxy in the HST image is 0.14 -+0.07 arcsec. We find no evidence in our deep HST image for a chance foreground galaxy superposed along the line of sight to the proposed host at z=3.418. The morphology and photometric properties of this galaxy, such as the total flux, morphology, radial surface profile and scale length, are typical as compared to other, spectroscopically confirmed z>3 galaxies.

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