2003ApJ...586..128C


Query : 2003ApJ...586..128C

2003ApJ...586..128C - Astrophys. J., 586, 128-134 (2003/March-3)

Keck spectroscopy and Hubble Space Telescope imaging of GRB 000926: probing a host galaxy at z = 2.038.

CASTRO S., GALAMA T.J., HARRISON F.A., HOLTZMAN J.A., BLOOM J.S., DJORGOVSKI S.G. and KULKARNI S.R.

Abstract (from CDS):

We present early-time Keck spectroscopic observations and late-time Hubble Space Telescope (HST) imaging of GRB 000926. The HST images show a small offset between the optical transient and a bright, compact knot in the host galaxy. Combined with the large equivalent widths measured for metallic absorption lines by the Keck Echellette Spectrograph and Imager (ESI) and the Low Resolution Imaging Spectrometer, this indicates that the GRB exploded inside a region of high stellar density. The ESI spectroscopy reveals two absorption systems centered at z=2.0379±0.0008 with a velocity separation of 168 km/s, which we interpret as being due to individual features in the host galaxy. The ratios of chromium to zinc equivalent widths indicate that the host is depleted in dust relative to local values to a similar degree as damped Lyα systems at the same redshift.

Abstract Copyright:

Journal keyword(s): Galaxies: High-Redshift - Gamma Rays: Bursts

Simbad objects: 3

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Number of rows : 3
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 GRB 970508 gB 06 53 49.2 +79 16 19           ~ 868 1
2 GRB 000418 gB 12 25 21 +20 05.0           ~ 214 0
3 GRB 000926 gB 17 04 15 +51 46.0           ~ 364 0

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