Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/29182
Campo DC | Valore | Lingua |
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dc.contributor.author | Christensen, L. | en_US |
dc.contributor.author | Vergani, S. D. | en_US |
dc.contributor.author | Schulze, S. | en_US |
dc.contributor.author | Annau, N. | en_US |
dc.contributor.author | Selsing, J. | en_US |
dc.contributor.author | Fynbo, J. P. U. | en_US |
dc.contributor.author | de Ugarte Postigo, A. | en_US |
dc.contributor.author | Cañameras, R. | en_US |
dc.contributor.author | Lopez, S. | en_US |
dc.contributor.author | Passi, D. | en_US |
dc.contributor.author | Cortés-Zuleta, P. | en_US |
dc.contributor.author | Ellison, S. L. | en_US |
dc.contributor.author | D'ODORICO, Valentina | en_US |
dc.contributor.author | Becker, G. | en_US |
dc.contributor.author | Berg, T. A. M. | en_US |
dc.contributor.author | Cano, Z. | en_US |
dc.contributor.author | COVINO, Stefano | en_US |
dc.contributor.author | CUPANI, Guido | en_US |
dc.contributor.author | D'Elia, V. | en_US |
dc.contributor.author | Goldoni, P. | en_US |
dc.contributor.author | Gomboc, A. | en_US |
dc.contributor.author | Hammer, F. | en_US |
dc.contributor.author | Heintz, K. E. | en_US |
dc.contributor.author | Jakobsson, P. | en_US |
dc.contributor.author | Japelj, J. | en_US |
dc.contributor.author | Kaper, L. | en_US |
dc.contributor.author | Malesani, D. | en_US |
dc.contributor.author | Møller, P. | en_US |
dc.contributor.author | Petitjean, P. | en_US |
dc.contributor.author | Pugliese, V. | en_US |
dc.contributor.author | Sánchez-Ramírez, R. | en_US |
dc.contributor.author | Tanvir, N. R. | en_US |
dc.contributor.author | Thöne, C. C. | en_US |
dc.contributor.author | Vestergaard, M. | en_US |
dc.contributor.author | Wiersema, K. | en_US |
dc.contributor.author | Worseck, G. | en_US |
dc.date.accessioned | 2020-12-23T16:55:32Z | - |
dc.date.available | 2020-12-23T16:55:32Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29182 | - |
dc.description.abstract | Previous studies have shown that the incidence rate of intervening strong Mg II absorbers towards gamma-ray bursts (GRBs) were a factor of 2-4 higher than towards quasars. Exploring the similar sized and uniformly selected legacy data sets XQ-100 and XSGRB, each consisting of 100 quasar and 81 GRB afterglow spectra obtained with a single instrument (VLT/X-shooter), we demonstrate that there is no disagreement in the number density of strong Mg II absorbers with rest-frame equivalent widths W_r<SUP>λ2796>1</SUP> Å towardsGRBs and quasars in the redshift range 0.1 ≲ z ≲ 5. With large and similar sample sizes, and path length coverages of ∆z = 57.8 and 254.4 for GRBs and quasars, respectively, the incidences of intervening absorbers are consistent within 1σ uncertainty levels at all redshifts. For absorbers at z < 2.3, the incidence towards GRBs is a factor of 1.5 ± 0.4 higher than the expected number of strong Mg II absorbers in Sloan Digital Sky Survey (SDSS) quasar spectra, while for quasar absorbers observed with X-shooter we find an excess factor of 1.4 ± 0.2 relative to SDSS quasars. Conversely, the incidence rates agree at all redshifts with reported high-spectral-resolution quasar data, and no excess is found. The only remaining discrepancy in incidences is between SDSS Mg II catalogues and high-spectral-resolution studies. The rest-frame equivalent-width distribution also agrees to within 1σ uncertainty levels between the GRB and quasar samples. Intervening strong Mg II absorbers towards GRBs are therefore neither unusually frequent, nor unusually strong. <P />Based on observations collected at the European Southern Observatory, Paranal, Chile, Program ID: 098.A-0055, 097.A-0036, 096.A-0079, 095.B-0811(B), 095.A-0045, 094.A-0134, 093.A-0069, 092.A-0124, 0091.C-0934, 090.A-0088, 089.A-0067, 088.A-0051, 087.A-0055, 086.A-0073, 085.A-0009 and 084.A-0260. XQ-100: 189.A-0424. | en_US |
dc.language.iso | eng | en_US |
dc.title | Solving the conundrum of intervening strong Mg II absorbers towards gamma-ray bursts and quasars | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201731382 | en_US |
dc.identifier.scopus | 2-s2.0-85038215597 | en_US |
dc.identifier.isi | 000417621800002 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2017/12/aa31382-17/aa31382-17.html | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 608 | en_US |
dc.relation.firstpage | A84 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 36 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | USA | en_US |
dc.contributor.country | GBR | en_US |
dc.contributor.country | FRA | en_US |
dc.contributor.country | DEU | en_US |
dc.contributor.country | ESP | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017A&A...608A..84C | en_US |
dc.relation.ercsector | ERC sectors::Physical Sciences and Engineering::PE9 Universe sciences: astro-physics/chemistry/biology; solar systems; stellar, galactic and extragalactic astronomy, planetary systems, cosmology, space science, instrumentation::PE9_8 Formation and evolution of galaxies | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegare il file al passo 5-Carica) | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.orcid | 0000-0003-3693-3091 | - |
crisitem.author.orcid | 0000-0001-9078-5507 | - |
crisitem.author.orcid | 0000-0002-6830-9093 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
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