Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/27012
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Bisogni, Susanna | en_US |
dc.contributor.author | Marconi, Alessandro | en_US |
dc.contributor.author | RISALITI, Guido | en_US |
dc.contributor.author | LUSSO, ELISABETA | en_US |
dc.date.accessioned | 2020-09-01T07:48:11Z | - |
dc.date.available | 2020-09-01T07:48:11Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 2296-987X | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27012 | - |
dc.description.abstract | We present an analysis of the average spectral properties of 12,000 SDSS quasars as a function of accretion disc inclination, as measured from the equivalent width of the [O III] 5007Å line. The use of this indicator on a large sample of quasars from the SDSS DR7 has proven the presence of orientation effects on the features of UV/optical spectra, confirming the presence of outflows in the NLR gas and that the geometry of the BLR is disc-like. Relying on the goodness of this indicator, we are now using it to investigate other bands/components of AGN. Specifically, the study of the UV/optical/IR SED of the same sample provides information on the obscuring “torus”. The SED shows a decrease of the IR fraction moving from face-on to edge-on sources, in agreement with models where the torus is co-axial with the accretion disc. Moreover, the fact we are able to observe the broad emission lines also in sources in an edge-on position, suggests that the torus is rather clumpy than smooth as in the Unified Model. The behaviour of the SED as a function of EW[OIII] is in agreement with the predictions of the clumpy torus models as well. | en_US |
dc.language.iso | eng | en_US |
dc.title | EW[OIII] as an orientation indicator for quasars: implications for the torus | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.3389/fspas.2017.00048 | en_US |
dc.identifier.scopus | 2-s2.0-85054076438 | en_US |
dc.identifier.isi | 000428552700001 | en_US |
dc.identifier.url | https://www.frontiersin.org/articles/10.3389/fspas.2017.00048/full | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | 4 | en_US |
dc.relation.firstpage | 48 | en_US |
dc.type.referee | REF_2 | en_US |
dc.description.numberofauthors | 4 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | FRONTIERS IN ASTRONOMY AND SPACE SCIENCES | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2017FrASS...4...48B | 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 | IASF Milano | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0003-3746-4565 | - |
crisitem.author.orcid | 0000-0002-9889-4238 | - |
crisitem.journal.journalissn | 2296-987X | - |
crisitem.journal.ance | E227194 | - |
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5_BisogniProceeding2.pdf | PDF editoriale | 1.07 MB | Adobe PDF | Visualizza/apri |
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