Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36

Full listo of authors: Krühler, T.; Ledoux, C.; Fynbo, J. P. U.; Vreeswijk, P. M.; Schmidl, S.; Malesani, D.; Christensen, L.; De Cia, A.; Hjorth, J.; Jakobsson, P.; Kann, D. A.; Kaper, L.; Vergani, S. D.; Afonso, P. M. J.; Covino, S.; de Ugarte Postigo, A.; D'Elia, V.; Filgas, R.; Goldoni, P.;...

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Detalles Bibliográficos
Autores: Krühler, T., de Ugarte Postigo, A., Sánchez-Ramírez, R.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/409057
Acceso en línea:http://hdl.handle.net/10261/409057
Access Level:acceso abierto
Palabra clave:Dust, extinction
Galaxies: high-redshift
Galaxies: ISM
Gamma-ray burst: individual: GRB 120815A
ISM: molecules
id ES_2b9a0c9780e2e48f02e43da5df4e158b
oai_identifier_str oai:digital.csic.es:10261/409057
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36
title Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36
spellingShingle Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36
Krühler, T.
Dust, extinction
Galaxies: high-redshift
Galaxies: ISM
Gamma-ray burst: individual: GRB 120815A
ISM: molecules
title_short Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36
title_full Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36
title_fullStr Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36
title_full_unstemmed Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36
title_sort Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36
dc.creator.none.fl_str_mv Krühler, T.
de Ugarte Postigo, A.
Sánchez-Ramírez, R.
author Krühler, T.
author_facet Krühler, T.
de Ugarte Postigo, A.
Sánchez-Ramírez, R.
author_role author
author2 de Ugarte Postigo, A.
Sánchez-Ramírez, R.
author2_role author
author
dc.contributor.none.fl_str_mv European Commission
Alexander von Humboldt Foundation
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Dust, extinction
Galaxies: high-redshift
Galaxies: ISM
Gamma-ray burst: individual: GRB 120815A
ISM: molecules
topic Dust, extinction
Galaxies: high-redshift
Galaxies: ISM
Gamma-ray burst: individual: GRB 120815A
ISM: molecules
description Full listo of authors: Krühler, T.; Ledoux, C.; Fynbo, J. P. U.; Vreeswijk, P. M.; Schmidl, S.; Malesani, D.; Christensen, L.; De Cia, A.; Hjorth, J.; Jakobsson, P.; Kann, D. A.; Kaper, L.; Vergani, S. D.; Afonso, P. M. J.; Covino, S.; de Ugarte Postigo, A.; D'Elia, V.; Filgas, R.; Goldoni, P.; Greiner, J.; Hartoog, O. E.; Milvang-Jensen, B.; Nardini, M.; Piranomonte, S.; Rossi, A.; Sánchez-Ramírez, R.; Schady, P.; Schulze, S.; Sudilovsky, V.; Tanvir, N. R.; Tagliaferri, G.; Watson, D. J.; Wiersema, K.; Wijers, R. A. M. J.; Xu, D.
publishDate 2013
dc.date.none.fl_str_mv 2013
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/409057
url http://hdl.handle.net/10261/409057
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/EC/FP7/322307
http://dx.doi.org/10.1051/0004-6361/201321772
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Molecular hydrogen in the damped Lyman α system towards GRB 120815A at z = 2.36Krühler, T.de Ugarte Postigo, A.Sánchez-Ramírez, R.Dust, extinctionGalaxies: high-redshiftGalaxies: ISMGamma-ray burst: individual: GRB 120815AISM: moleculesFull listo of authors: Krühler, T.; Ledoux, C.; Fynbo, J. P. U.; Vreeswijk, P. M.; Schmidl, S.; Malesani, D.; Christensen, L.; De Cia, A.; Hjorth, J.; Jakobsson, P.; Kann, D. A.; Kaper, L.; Vergani, S. D.; Afonso, P. M. J.; Covino, S.; de Ugarte Postigo, A.; D'Elia, V.; Filgas, R.; Goldoni, P.; Greiner, J.; Hartoog, O. E.; Milvang-Jensen, B.; Nardini, M.; Piranomonte, S.; Rossi, A.; Sánchez-Ramírez, R.; Schady, P.; Schulze, S.; Sudilovsky, V.; Tanvir, N. R.; Tagliaferri, G.; Watson, D. J.; Wiersema, K.; Wijers, R. A. M. J.; Xu, D.We present the discovery of molecular hydrogen (H2), including the presence of vibrationally-excited H2 in the optical spectrum of the afterglow of GRB 120815A at z = 2:36 obtained with X-shooter at the VLT. Simultaneous photometric broad-band data from GROND and X-ray observations by Swift/XRT place further constraints on the amount and nature of dust along the sightline. The galactic environment of GRB 120815A is characterized by a strong DLA with log(N(Hi)=cm-2) = 21:95 ± 0:10, prominent H 2 absorption in the Lyman-Werner bands (log(N(H2)=cm -2) = 20:54 ± 0:13) and thus a molecular gas fraction log f (H2) = -1:14 ± 0:15. The distance d between the absorbing neutral gas and GRB 120815A is constrained via photo-excitation modeling of fine-structure and meta-stable transitions of Fe ii and Ni ii to d = 0:5 ± 0:1 kpc. The DLA metallicity ([Zn=H] = -1:15 ± 0:12), visual extinction (AV 0:15 mag) and dust depletion ([Zn=Fe] = 1:01 ± 0:10) are intermediate between the values of well-studied, H2- deficient GRB-DLAs observed at high spectral resolution, and the approximately solar metallicity, highly-obscured and H2-rich GRB 080607 sightline. With respect to N(Hi), metallicity, as well as dust-extinction and depletion, GRB 120815A is fairly representative of the average properties of GRB-DLAs. This demonstrates that molecular hydrogen is present in at least a fraction of the more typical GRBDLAs, and H2 and H2 are probably more wide-spread among GRB-selected systems than the few examples of previous detections would suggest. Because H2 transitions are located redwards of the Lyman α absorption, H2 opens a second route for positive searches for molecular absorption also in GRB afterglows at lower redshifts and observed at lower spectral resolution. Further detections of molecular gas in GRB-DLAs would allow statistical studies, and, coupled with host follow-up and sub-mm spectroscopy, provide unprecedented insights into the process and conditions of star-formation at high redshift. © ESO, 2013.We acknowledge very helpful comments and a very timely report from the anonymous referee that helped to improve the quality of the manuscript, and thank S. Savaglio for their insightful and constructive com- ments. T.K. acknowledges support by the European Commission under the Marie Curie Intra-European Fellowship Programme in FP7. J.P.U.F. acknowledges sup- port from the ERC-StG grant EGGS-278202. A.d.U.P. acknowledges support 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 Danish National Research Foundation. P.S. acknowledges sup- port through the Sofja Kovalevskaja Award from the Alexander von Humboldt Foundation of Germany. S. Schmidl acknowledges support by the Thüringer Ministerium für Bildung, Wissenschaft und Kultur under FKZ 12010-514. T.K. acknowledges the use of the free software VPFit, written by Bob Carswell and John Webb. Part of the funding for GROND (both hardware as well as personnel) was generously granted from the Leibniz-Prize to Prof. G. Hasinger (DFG grant HA 1850/28-1). This work made use of data supplied by the UK Swift Science Data Centre at the University of Leicester. Finally, we acknowledge expert sup- port from the ESO staff at the Paranal and La Silla observatories in obtaining these target of opportunity data.Peer reviewedEDP SciencesEuropean CommissionAlexander von Humboldt FoundationConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/409057reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/FP7/322307http://dx.doi.org/10.1051/0004-6361/201321772Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4090572026-05-22T06:33:51Z
score 15,81155

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