EAS Publications Series
Volume 61, 2013Gamma-ray Bursts: 15 Years of GRB Afterglows – Progenitors, Environments and Host Galaxies from the Nearby to the Early Universe
|Page(s)||431 - 433|
|Section||Chapter IX: Host Galaxies|
|Published online||22 July 2013|
A.J. Castro-Tirado, J.Gorosabel and I.H. Park (eds)
EAS Publications Series, 61 (2013) 431-433
A deep search for the host galaxies of GRBs with no detected optical afterglow
1 Thüringer Landessternwarte
Tautenburg, Sternwarte 5, 07778
2 Instituto de Astrofísica de Canarias (IAC), 38200 La Laguna, Tenerife, Spain
3 Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstraße, 85748 Garching, Germany
4 Department of Physics and Astronomy, Dickinson College, Carlisle, PA 17013, USA
5 Dark Cosmology Centre, Niels Bohr Institute, Univ. of Copenhagen, Juliane Maries Vej 30, 2100 Købnhaven, Denmark
Long gamma-ray bursts (GRBs) pinpoint star-forming galaxies as they are linked to the deaths of massive stars. In most cases, these galaxies have been found to be blue, sub-luminous and of low-metallicity. However, our recent survey have demonstrated that a sizeable fraction of GRBs reside in massive, dusty and star-forming extremely red objects (EROs, (R − K)AB > 3.5). The most remarkable case is the host of GRB 080207, one of the reddest galaxies ever associated with a GRB. This discovery suggests that at least a fraction of GRB afterglows trace a subpopulation of massive starburst galaxies, which are markedly different from the most studied blue, sub-luminous and compact GRB host galaxies.
© EAS, EDP Sciences 2013
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