Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29607
DC Field | Value | Language |
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dc.contributor.author | MARZIANI, Paola | en_US |
dc.contributor.author | del Olmo, A. | en_US |
dc.contributor.author | Martínez-Carballo, M. A. | en_US |
dc.contributor.author | Martínez-Aldama, M. L. | en_US |
dc.contributor.author | STIRPE, Giovanna Maria | en_US |
dc.contributor.author | Negrete, C. A. | en_US |
dc.contributor.author | Dultzin, D. | en_US |
dc.contributor.author | D'Onofrio, M. | en_US |
dc.contributor.author | Bon, E. | en_US |
dc.contributor.author | Bon, N. | en_US |
dc.date.accessioned | 2021-01-08T14:24:18Z | - |
dc.date.available | 2021-01-08T14:24:18Z | - |
dc.date.issued | 2019 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29607 | - |
dc.description.abstract | Context. The inter-line comparison between high- and low-ionization emission lines has yielded a wealth of information on the structure and dynamics of the quasar broad line region (BLR), including perhaps the earliest unambiguous evidence in favor of a disk + wind structure in radio-quiet quasars. <BR /> Aims: We carried out an analysis of the C IVλ1549 and Hβ line profiles of 28 Hamburg-ESO high-luminosity quasars and of 48 low-z, low-luminosity sources in order to test whether the width of the high-ionization line C IVλ1549 could be correlated with Hβ and be used as a virial broadening estimator. <BR /> Methods: We analyze intermediate- to high-S/N, moderate-resolution optical and near-infrared (NIR) spectra covering the redshifted C IVλ1549 and Hβ over a broad range of luminosity log L ∼ 44 - 48.5 [erg s<SUP>-1</SUP>] and redshift (0 - 3), following an approach based on the quasar main sequence. <BR /> Results: The present analysis indicates that the line width of C IVλ1549 is not immediately offering a virial broadening estimator equivalent to Hβ. At the same time a virialized part of the BLR appears to be preserved even at the highest luminosities. We suggest a correction to FWHM(C IVλ1549) for Eddington ratio (using the C IVλ1549 blueshift as a proxy) and luminosity effects that can be applied over more than four dex in luminosity. <BR /> Conclusions: Great care should be used in estimating high-L black hole masses M<SUB>BH</SUB> from C IVλ1549 line width. However, once a corrected FWHM C IVλ1549 is used, a C IVλ1549-based scaling law can yield unbiased M<SUB>BH</SUB> values with respect to the ones based on Hβ with sample standard deviation ≈0.3 dex. | en_US |
dc.language.iso | eng | en_US |
dc.title | Black hole mass estimates in quasars. A comparative analysis of high- and low-ionization lines | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201935265 | en_US |
dc.identifier.scopus | 2-s2.0-85069440905 | en_US |
dc.identifier.isi | 000474197300001 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2019/07/aa35265-19/aa35265-19.html | en_US |
dc.identifier.url | https://arxiv.org/abs/1905.00617 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 627 | en_US |
dc.relation.firstpage | A88 | en_US |
dc.type.referee | REF_1 | en_US |
dc.relation.scientificsector | FIS/05 - ASTRONOMIA E ASTROFISICA | en_US |
dc.relation.journal | ASTRONOMY & ASTROPHYSICS | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2019A&A...627A..88M | 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. Padova | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0002-6058-4912 | - |
crisitem.author.orcid | 0000-0002-3702-8731 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1905.00617.pdf | preprint | 2.45 MB | Adobe PDF | View/Open |
aa35265-19.pdf | pdf editoriale | 1.98 MB | Adobe PDF | View/Open |
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