Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/24970
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zonca, Alberto | en_US |
dc.contributor.author | CECCHI PESTELLINI, Cesare | en_US |
dc.contributor.author | MULAS, Giacomo | en_US |
dc.contributor.author | CASU, Silvia | en_US |
dc.contributor.author | ARESU, Giambattista | en_US |
dc.date.accessioned | 2020-05-19T16:32:15Z | - |
dc.date.available | 2020-05-19T16:32:15Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-637X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24970 | - |
dc.description.abstract | We analyze extragalactic extinction profiles derived through gamma-ray burst afterglows, using a dust model specifically constructed on the assumption that dust grains are not immutable but respond, time-dependently, to the local physics. Such a model includes core-mantle spherical particles of mixed chemical composition (silicate core, sp<SUP>2</SUP>, and sp<SUP>3</SUP> carbonaceous layers), and an additional molecular component in the form of free-flying polycyclic aromatic hydrocarbons. We fit most of the observed extinction profiles. Failures occur for lines of sight, presenting remarkable rises blueward of the bump. We find a tendency for the carbon chemical structure to become more aliphatic with the galactic activity, and to some extent with increasing redshifts. Moreover, the contribution of the molecular component to the total extinction is more important in younger objects. The results of the fitting procedure (either successes and failures) may be naturally interpreted through an evolutionary prescription based on the carbon cycle in the interstellar medium of galaxies. | en_US |
dc.language.iso | eng | en_US |
dc.title | Modeling Extragalactic Extinction through Gamma-Ray Burst Afterglows | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3847/0004-637X/829/1/22 | en_US |
dc.identifier.scopus | 2-s2.0-84990903105 | en_US |
dc.identifier.isi | 000385374500022 | en_US |
dc.identifier.url | https://iopscience.iop.org/article/10.3847/0004-637X/829/1/22 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 829 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 22 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | no | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | THE ASTROPHYSICAL JOURNAL | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016ApJ...829...22Z | 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. Palermo | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.orcid | 0000-0001-7480-0324 | - |
crisitem.author.orcid | 0000-0003-0602-6669 | - |
crisitem.author.orcid | 0000-0002-0154-3571 | - |
crisitem.journal.journalissn | 0004-637X | - |
crisitem.journal.ance | E016252 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Zonca_2016_ApJ_829_22.pdf | 378.4 kB | Adobe PDF | View/Open |
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