The Interstellar Medium of GRB Host Galaxies I. Echelle Spectra of Swift GRB Afterglows

Abstract

We present optical echelle spectra of four gamma-ray burst (GRB) afterglows (GRB 050730, GRB 050820, GRB 051111, and GRB 060418) discovered during the first 1.5 years of operation of the Swift satellite and localized by either the Swift telescope or follow-up ground-based imaging. We analyze the spectra to derive accurate column density measurements for the transitions arising in the interstellar medium (ISM) of the GRB host galaxies. These measurements can be used to constrain the physical properties of the ISM including the metallicity, dust-to-gas ratio, ionization state, and chemical abundances of the gas. We also present measurements of the strong MgII systems in the GRB afterglow spectra. With the publication of this paper, we provide the first data release of echelle afterglow spectra by the GRAASP collaboration to the general community.

52 pages, 18 figures. Accepted to ApJS. The spectra will be published with the paper and is also available upon request. A complete version with full-resolution figures is available at http://lambda.uchicago.edu/public/tmp/echelle.pdf

References in corpus (11)

• The afterglow, the redshift, and the extreme energetics of the gamma-ray burst 990123
• The SDSS Damped Lya Survey: Data Release 3
• Echelle Spectroscopy of a GRB Afterglow at z=3.969: A New Probe of the Interstellar and Intergalactic Media in the Young Universe
• The ESI/KeckII Damped Lya Abundance Database
• The UCSD HIRES/KeckI Damped Lya Abundance Database: I. The Data
• A Procedure for Correcting the Apparent Optical Depths of Moderately Saturated Interstellar Absorption Lines
• On the Incidence of Strong MgII Absorbers Along GRB Sightlines
• A flash in the dark: UVES/VLT high resolution spectroscopy of GRB afterglows
• On the Perils of Curve-of-Growth Analysis: Systematic Abundance Underestimates for the Gas in Gamma-Ray Burst Host Galaxies
• An efficient technique for pre-selecting low redshift damped Lyman alpha systems
• Spectroscopy of GRB 051111 at z=1.54948: Kinematics and Elemental Abundances of the GRB Environment and Host Galaxy

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