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Time-dependent Optical Spectroscopy of GRB 010222: Clues to the Gamma-ray burst environment

Mirabal, N; Halpern, J.; Kulkarni, Shrinivas R; Castro, S; Bloom, J S; Djorgovski, S G; Galama, T J; Harrison, F A; Frail, Dale A; Price, Paul; Reichart, D E; Ebeling, H; Bunker, Andrew; Dawson, Steve; Dey, Arjun; Spinrad, Hyron; Stern, Daniel


We present sequential optical spectra of the afterglow of GRB 010222 obtained 1 day apart using the Low-Resolution Imaging Spectrometer (LRIS) and the Echellette Spectrograph and Imager (ESI) on the Keck Telescopes. Three low-ionization absorption systems are spectroscopically identified at z 1 = 1.47688, z2 = 1.15628, and z3 = 0.92747. The higher resolution ESI spectrum reveals two distinct components in the highest redshift system at z1a = 1.47590 and z1b = 1.47688. We interpret the z1b =...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Astrophysical Journal, The
DOI: 10.1086/342619


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