Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

GRB 160410A: The first chemical study of the interstellar medium of a short GRB

Agüí Fernández, JF, Thöne, CC, Kann, DA, de Ugarte Postigo, A, Selsing, J, Schady, P, Yates, RM, Greiner, J, Oates, SR, Malesani, DB, Xu, D, Klotz, A, Campana, S, Rossi, A, Perley, DA, Blažek, M, D’Avanzo, P, Giunta, A, Hartmann, D, Heintz, KE , Jakobsson, P, Kirkpatrick IV, CC, Kouveliotou, C, Melandri, A, Pugliese, G, Salvaterra, R, Starling, RLC, Tanvir, NR, Vergani, SD and Wiersema, K (2023) GRB 160410A: The first chemical study of the interstellar medium of a short GRB. Monthly Notices of the Royal Astronomical Society, 520 (1). pp. 613-636. ISSN 0035-8711

GRB 160410A The first chemical study of the interstellar medium of a short GRB.pdf - Published Version

Download (5MB) | Preview


Short gamma-ray bursts (SGRBs) are produced by the coalescence of compact binary systems which are remnants of massive stars. GRB 160410A is classified as a short-duration GRB with extended emission and is currently the farthest SGRB with a redshift determined from an afterglow spectrum and also one of the brightest SGRBs to date. The fast reaction to the Neil Gehrels Swift Observatory alert allowed us to obtain a spectrum of the afterglow using the X-shooter spectrograph at the Very Large Telescope (VLT). The spectrum shows several absorption features at a redshift of z = 1.7177, in addition, we detect two intervening systems at z = 1.581 and z = 1.444. The spectrum shows Ly α in absorption with a column density of log (N(H I)/cm2) = 21.2 ± 0.2 which, together with Fe II, C II, Si II, Al II, and O I, allow us to perform the first study of chemical abundances in a SGRB host galaxy. We determine a metallicity of [X/H] = −2.3 ± 0.2 for Fe II and −2.5 ± 0.2 for Si II and no dust depletion. We also find no evidence for extinction in the afterglow spectral energy distribution modelling. The environment has a low degree of ionization and the C IV and Si IV lines are completely absent. We do not detect an underlying host galaxy down to deep limits. Additionally, we compare GRB 160410A to GRB 201221D, another high-z short GRB that shows absorption lines at z = 1.045 and an underlying massive host galaxy.

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2023 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
Uncontrolled Keywords: 0201 Astronomical and Space Sciences; Astronomy & Astrophysics
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: Oxford University Press (OUP)
SWORD Depositor: A Symplectic
Date Deposited: 15 Mar 2023 13:12
Last Modified: 15 Mar 2023 13:15
DOI or ID number: 10.1093/mnras/stad099
URI: https://researchonline.ljmu.ac.uk/id/eprint/19102
View Item View Item