Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/28954
Campo DC | Valore | Lingua |
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dc.contributor.author | Heintz, K. E. | en_US |
dc.contributor.author | Zafar, T. | en_US |
dc.contributor.author | De Cia, A. | en_US |
dc.contributor.author | Vergani, S. D. | en_US |
dc.contributor.author | Jakobsson, P. | en_US |
dc.contributor.author | Fynbo, J. P. U. | en_US |
dc.contributor.author | Watson, D. | en_US |
dc.contributor.author | Japelj, J. | en_US |
dc.contributor.author | Møller, P. | en_US |
dc.contributor.author | COVINO, Stefano | en_US |
dc.contributor.author | Kaper, L. | en_US |
dc.contributor.author | Andersen, A. C. | en_US |
dc.date.accessioned | 2020-12-17T16:06:33Z | - |
dc.date.available | 2020-12-17T16:06:33Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/28954 | - |
dc.description.abstract | We present a study of the extinction and depletion-derived dust properties of gamma-ray burst (GRB) absorbers at 1 < z < 3 showing the presence of neutral atomic-carbon (C I). By modelling their parametric extinction laws, we discover a broad range of dust models characterizing the GRB C I absorption systems. In addition to the already well-established correlation between the amount of C I and visual extinction, A<SUB>V</SUB>, we also observe a correlation with the total-to-selective reddening, R<SUB>V</SUB>. All three quantities are also found to be connected to the presence and strength of the 2175 Å dust extinction feature. While the amount of C I is found to be correlated with the SED-derived dust properties, we do not find any evidence for a connection with the depletion-derived dust content as measured from [Zn/Fe] and N(Fe)<SUB>dust</SUB>. To reconcile this, we discuss a scenario where the observed extinction is dominated by the composition of dust particles confined in the molecular gas-phase of the interstellar medium (ISM). We argue that since the depletion level trace non-carbonaceous dust in the ISM, the observed extinction in GRB C I absorbers is primarily produced by carbon-rich dust in the molecular cloud and is therefore only observable in the extinction curves and not in the depletion patterns. This also indicates that the 2175 Å dust extinction feature is produced by dust and molecules in the cold and molecular gas-phase. This scenario provides a possible resolution to the discrepancy between the depletion- and SED-derived amounts of dust in high- z absorbers. | en_US |
dc.language.iso | eng | en_US |
dc.title | On the dust properties of high-redshift molecular clouds and the connection to the 2175 Å extinction bump | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz1012 | en_US |
dc.identifier.scopus | 2-s2.0-85067917405 | en_US |
dc.identifier.isi | 000474899400046 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article-abstract/486/2/2063/5437691?redirectedFrom=fulltext | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 486 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 2063 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019MNRAS.486.2063H | 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 | 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. Brera | - |
crisitem.author.orcid | 0000-0001-9078-5507 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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stz1012.pdf | Pdf editoriale | 1.03 MB | Adobe PDF | Visualizza/apri |
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