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Far-infrared observations of an unbiased sample of gamma-ray burst host galaxies

Kohn, S.A.; Micha owski, M.J.; Bourne, N.; Baes, M.; Fritz, J.; Cooray, A.; de Looze, I.; De Zotti, G.; Dannerbauer, H.; Dunne, L.; Dye, S.; Eales, S.; Furlanetto, C.; Gonzalez-Nuevo, J.; Ibar, E.; Ivison, R.J.; Maddox, S.J.; Scott, D.; Smith, D.J.B.; Smith, M.W.L.; Symeonidis, M.; Valiante, E.

Authors

S.A. Kohn

M.J. Micha owski

N. Bourne

M. Baes

J. Fritz

A. Cooray

I. de Looze

G. De Zotti

H. Dannerbauer

L. Dunne

SIMON DYE Simon.Dye@nottingham.ac.uk
Associate Professor

S. Eales

C. Furlanetto

J. Gonzalez-Nuevo

E. Ibar

R.J. Ivison

S.J. Maddox

D. Scott

D.J.B. Smith

M.W.L. Smith

M. Symeonidis

E. Valiante



Abstract

Gamma-ray bursts (GRBs) are the most energetic phenomena in the Universe; believed to result from the collapse and subsequent explosion of massive stars. Even though it has profound consequences for our understanding of their nature and selection biases, little is known about the dust properties of the galaxies hosting GRBs. We present analysis of the far-infrared properties of an unbiased sample of 20 BeppoSAX and Swift GRB host galaxies (at an average redshift of z = 3.1) located in the Herschel Astrophysical Terahertz Large Area Survey, the Herschel Virgo Cluster Survey, the Herschel Fornax Cluster Survey, the Herschel Stripe 82 Survey and the Herschel Multi-tiered Extragalactic Survey, totalling 880 deg2, or ∼3 per cent of the sky in total. Our sample selection is serendipitous, based only on whether the X-ray position of a GRB lies within a large-scale Herschel survey – therefore our sample can be considered completely unbiased. Using deep data at wavelengths of 100–500 μm, we tentatively detected 1 out of 20 GRB hosts located in these fields. We constrain their dust masses and star formation rates (SFRs), and discuss these in the context of recent measurements of submillimetre galaxies and ultraluminous infrared galaxies. The average far-infrared flux of our sample gives an upper limit on SFR of 500 M⊙ yr−1 is consistent with the contribution of such luminous galaxies to the cosmic star formation density.

Journal Article Type Article
Publication Date Feb 5, 2015
Journal Monthly Notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 1365-2966
Publisher Oxford University Press
Peer Reviewed Peer Reviewed
Volume 448
Issue 2
APA6 Citation Kohn, S., Micha owski, M., Bourne, N., Baes, M., Fritz, J., Cooray, A., …Valiante, E. (2015). Far-infrared observations of an unbiased sample of gamma-ray burst host galaxies. Monthly Notices of the Royal Astronomical Society, 448(2), https://doi.org/10.1093/mnras/stv088
DOI https://doi.org/10.1093/mnras/stv088
Keywords gamma-ray burst: general, dust, extinction, galaxies: high-redshift, galaxies: star formation, infrared: galaxies
Publisher URL https://academic.oup.com/mnras/article-lookup/doi/10.1093/mnras/stv088
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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