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http://hdl.handle.net/20.500.12386/27015
Titolo: | EW [OIII] as an orientation indicator | Autori: | Bisogni, Susanna Marconi, Alessandro RISALITI, Guido LUSSO, ELISABETA |
Data pubblicazione: | 2017 | Abstract: | We present an analysis of the average spectral properties of 12,000 SDSS quasars as a function of accretion disk 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 disk-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 an increase of the IR fraction moving from face-on to to edge-on positions, in agreement with models where the torus is coaxial with the accretion disk, and characterised by a clumpy structure. | Titolo del convegno: | Quasars at all Cosmic Epochs | Luogo del convegno: | Padova, Italy | Periodo del convegno: | 2-7 Aprile, 2017 | URI: | http://hdl.handle.net/20.500.12386/27015 | URL: | https://zenodo.org/record/569785#.X03-QMgzZyw https://indico.ict.inaf.it/event/338/ |
DOI: | 10.5281/zenodo.569785 | Bibcode ADS: | 2017qace.confE..18B | Fulltext: | open |
È visualizzato nelle collezioni: | 4.09 Prodotti multimediali |
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