VLT/X-Shooter spectroscopy of the afterglow of the Swift GRB 130606A
| Autor: | Nial R. Tanvir, Martin Sparre, J. P. U. Fynbo, V. D'Elia, Jesper Sollerman, Thomas Krühler, R. Salinas, K. Wiersema, K. Mikkelsen, S. D. Vergani, J. Datson, Jens Hjorth, Palle Møller, P. Goldoni, A. de Ugarte Postigo, P. M. Vreeswijk, Stefano Covino, Lex Kaper, Dong Xu, Pall Jakobsson, B. Milvang-Jensen, Andrew J. Levan, Gianpiero Tagliaferri, T. Goto, A. De Cia, D. Malesani, O. E. Hartoog, N. Aghanim, Jens-Kristian Krogager, C. Ledoux, Hector Flores |
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| Přispěvatelé: | Astronomical Institute Anton Pannekoek (AI PANNEKOEK), University of Amsterdam [Amsterdam] (UvA), Dark Cosmology Centre (DARK), Niels Bohr Institute [Copenhagen] (NBI), Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH)-Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), AstroParticule et Cosmologie (APC (UMR_7164)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Observatoire de Paris, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), T.K. acknowledges support by the European Commission under the Marie Curie Intra-European Fellowship Programme in FP7. The research of A.d.U.P. is supported by the Spanish project AYA2012-39362-C02-02 and by the European Commission under the Marie Curie Career Integration Grant programme (FP7-PEOPLE-2012-CIG 322307). The Dark Cosmology Centre is funded by the DNRF., European Project: 278202,EC:FP7:ERC,ERC-2011-StG_20101014,EGGS(2011), European Project: 322307,EC:FP7:PEOPLE,FP7-PEOPLE-2012-CIG,HETRANSIENTS(2012), University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU)-Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU), Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), High Energy Astrophys. & Astropart. Phys (API, FNWI), PSL Research University (PSL)-PSL Research University (PSL)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Stellar population Metallicity first stars FOS: Physical sciences Astrophysics Gunn–Peterson trough 01 natural sciences ISM: abundances [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] 0103 physical sciences dark ages 010303 astronomy & astrophysics Reionization Physics 010308 nuclear & particles physics Astronomy and Astrophysics Quasar Astrophysics - Astrophysics of Galaxies Galaxy Afterglow gamma-ray burst: individual: GRB 130606A [PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA] 13. Climate action Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) cosmology: observations reionization Gamma-ray burst [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] Astrophysics - Cosmology and Nongalactic Astrophysics |
| Zdroj: | Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2015, 580, pp.A139. ⟨10.1051/0004-6361/201425001⟩ Astronomy and Astrophysics-A&A, EDP Sciences, 2015, 580, pp.A139. ⟨10.1051/0004-6361/201425001⟩ Astronomy & Astrophysics, 580:A139. EDP Sciences |
| ISSN: | 0004-6361 |
| Popis: | The reionisation of the Universe is thought to have ended around z~6, as inferred from spectroscopy of distant bright background sources, such as quasars (QSO) and gamma-ray burst (GRB) afterglows. Furthermore, spectroscopy of a GRB afterglow provides insight in its host galaxy, which is often too dim and distant to study otherwise. We present the high S/N VLT/X-shooter spectrum of GRB130606A at z=5.913. We aim to measure the degree of ionisation of the IGM between 5.025.6. GRBs are useful probes of the ionisation state of the IGM in the early Universe, but because of internal scatter we need a larger statistical sample to draw robust conclusions. The high [Si/Fe] in the host can be due to dust depletion, alpha-element enhancement, or a combination of both. The very high value of [Al/Fe]=2.40+/-0.78 might connected to the stellar population history. We estimate the host metallicity to be -1.7 Comment: 15 pages, 12 figures |
| Databáze: | OpenAIRE |
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