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Investigating a population of infrared-bright gamma-ray burst host galaxies
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Chrimes, Ashley, Stanway, Elizabeth R., Levan, Andrew J., Davies, Luke J. M., Angus , Charlotte and Greis, Stephanie M. L. (2018) Investigating a population of infrared-bright gamma-ray burst host galaxies. Monthly Notices of the Royal Astronomical Society, 478 (1). pp. 2-27. doi:10.1093/mnras/sty1043 ISSN 0035-8711.
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Official URL: https://doi.org/10.1093/mnras/sty1043
Abstract
We identify and explore the properties of an infrared-bright gamma-ray burst (GRB) host population. Candidate hosts are selected by coincidence with sources in WISE, with matching to random coordinates and a false alarm probability analysis showing that the contamination fraction is ∼0.5. This methodology has already identified the host galaxy of GRB 080517. We combine survey photometry from Pan-STARRS, SDSS, APASS, 2MASS, GALEX, and WISE with our own WHT/ACAM and VLT/X-shooter observations to classify the candidates and identify interlopers. Galaxy SED fitting is performed using MAGPHYS, in addition to stellar template fitting, yielding 13 possible IR-bright hosts. A further seven candidates are identified from the previously published work. We report a candidate host for GRB 061002, previously unidentified as such. The remainder of the galaxies have already been noted as potential hosts. Comparing the IR-bright population properties including redshift z, stellar mass M⋆, star formation rate SFR, and V-band attenuation AV to GRB host catalogues in the literature, we find that the infrared-bright population is biased towards low z, high M⋆, and high AV. This naturally arises from their initial selection – local and dusty galaxies are more likely to have the required IR flux to be detected in WISE. We conclude that while IR-bright GRB hosts are not a physically distinct class, they are useful for constraining existing GRB host populations, particularly for long GRBs.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Subjects: | Q Science > QB Astronomy | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Gamma ray bursts, Galaxies -- Statistics, Stars -- Formation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Monthly Notices of the Royal Astronomical Society | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Publisher: | Oxford University Press | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ISSN: | 0035-8711 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Official Date: | 21 July 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Volume: | 478 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Number: | 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Page Range: | pp. 2-27 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1093/mnras/sty1043 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reuse Statement (publisher, data, author rights): | This is a pre-copyedited, author-produced version of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Ashley A Chrimes, Elizabeth R Stanway, Andrew J Levan, Luke J M Davies, Charlotte R Angus, Stephanie M L Greis; Investigating a population of infrared-bright gamma-ray burst host galaxies, Monthly Notices of the Royal Astronomical Society, Volume 478, Issue 1, 21 July 2018, Pages 2–27, is available online at: https://doi.org/10.1093/mnras/sty1043 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Date of first compliant deposit: | 26 April 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 2 October 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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