Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29745
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bisogni, Susanna | en_US |
dc.contributor.author | LUSSO, ELISABETA | en_US |
dc.contributor.author | Marconi, Alessandro | en_US |
dc.contributor.author | RISALITI, Guido | en_US |
dc.date.accessioned | 2021-01-13T15:08:09Z | - |
dc.date.available | 2021-01-13T15:08:09Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29745 | - |
dc.description.abstract | We recently proposed the equivalent width (EW) of the narrow [O III]5007 Å emission line as an orientation indicator for active galactic nuclei. We tested this method on about 12 300 optically selected broad-line quasars from the SDSS seventh Data Release at redshift z < 0.8 and with full width at half-maximum values of broad emission lines (H α, H β, and Mg II) larger than 2000 km s<SUP>-1</SUP>. We now examine their spectral energy distributions (SEDs) using broad-band photometry from the near-infrared to the ultraviolet to look for variations in the overall shape as a function of the EW[O III]. We find that quasars with low EW[O III] values (close to face-on position) have flatter near-infrared SEDs with respect to sources with high EW[O III] values (almost edge-on). Moreover, quasars with high EW[O III] values show a factor of ∼2 lower emission in the UV to quasars with low EW[O III] values. Our findings indicate that the torus is clumpy and, on average, co-axial with the accretion disc and broad-line region, in agreement with the most recent theoretical models for the obscuring torus. | en_US |
dc.language.iso | eng | en_US |
dc.title | Orientation effects on the near-infrared broad-band emission of quasars | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stz495 | en_US |
dc.identifier.scopus | 2-s2.0-85072283995 | en_US |
dc.identifier.isi | 000466786400097 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/485/1/1405/5322189 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 485 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 1405 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 4 | 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 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019MNRAS.485.1405B | 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_6 Stars and stellar systems | 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.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | Article | - |
item.cerifentitytype | Publications | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.dept | O.A. Arcetri | - |
crisitem.author.orcid | 0000-0003-3746-4565 | - |
crisitem.author.orcid | 0000-0002-9889-4238 | - |
crisitem.author.orcid | 0000-0002-3556-977X | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1902.05543_bisogni2019.pdf | 3.14 MB | Adobe PDF | View/Open | |
stz495.pdf | PDF editoriale | 1.63 MB | Adobe PDF | View/Open |
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