Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/32257
DC Field | Value | Language |
---|---|---|
dc.contributor.author | SEVERGNINI, Paola | en_US |
dc.contributor.author | BRAITO, Valentina | en_US |
dc.contributor.author | CICONE, CLAUDIA | en_US |
dc.contributor.author | SARACCO, Paolo | en_US |
dc.contributor.author | Vignali, C. | en_US |
dc.contributor.author | SERAFINELLI, ROBERTO | en_US |
dc.contributor.author | DELLA CECA, Roberto | en_US |
dc.contributor.author | Dotti, M. | en_US |
dc.contributor.author | CUSANO, FELICE | en_US |
dc.contributor.author | PARIS, Diego | en_US |
dc.contributor.author | Pruto, G. | en_US |
dc.contributor.author | Zaino, A. | en_US |
dc.contributor.author | Ballo, L. | en_US |
dc.contributor.author | LANDONI, Marco | en_US |
dc.date.accessioned | 2022-06-09T15:05:23Z | - |
dc.date.available | 2022-06-09T15:05:23Z | - |
dc.date.issued | 2021 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/32257 | - |
dc.description.abstract | Although thousands of galaxy mergers are known, only a handful of sub-kiloparsec-scale supermassive black hole (SMBH) pairs have been confirmed so far, leaving a huge gap between the observed and predicted numbers of such objects. In this work, we present a detailed analysis of the Sloan Digital Sky Survey optical spectrum and of near-infrared (NIR) diffraction limited imaging of <ASTROBJ>SDSS J1431+4358</ASTROBJ>. This object is a local radio-quiet type 2 active galactic nucleus (AGN) previously selected as a double AGN candidate on the basis of the double-peaked [OIII] emission line. The NIR adaptive optics-assisted observations were obtained at the Large Binocular Telescope with the LUCI+FLAO camera. We found that most of the prominent optical emission lines are characterized by a double-peaked profile, mainly produced by AGN photoionization. Our spectroscopical analysis disfavors the hypothesis that the double-peaked emission lines in the source are the signatures of outflow kinematics, leaving open the possibility that we are detecting either the rotation of a single narrow-line region or the presence of two SMBHs orbiting around a common central potential. The latter scenario is further supported by the high-spatial resolution NIR imaging: after subtracting the dominant contribution of the stellar bulge component in the host galaxy, we detect two faint nuclear sources at r < 0.5 kpc projected separation. Interestingly, the two sources have a position angle consistent with that defined by the two regions where the [OIII] double peaks most likely originate. Aside from the discovery of a promising sub-kiloparsec scale dual AGN, our analysis shows the importance of an appropriate host galaxy subtraction in order to achieve a reliable estimate of the incidence of dual AGNs at small projected separations. | en_US |
dc.language.iso | eng | en_US |
dc.title | A possible sub-kiloparsec dual AGN buried behind the galaxy curtain | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/202039576 | en_US |
dc.identifier.scopus | 2-s2.0-85101289641 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2021/02/aa39576-20/aa39576-20.html | en_US |
dc.identifier.url | http://arxiv.org/abs/2012.09184v2 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 646 | en_US |
dc.relation.firstpage | A153 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | 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 | 2021A&A...646A.153S | 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. Brera | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | O.A. Roma | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.orcid | 0000-0001-5619-5896 | - |
crisitem.author.orcid | 0000-0002-2629-4989 | - |
crisitem.author.orcid | 0000-0003-0522-6941 | - |
crisitem.author.orcid | 0000-0003-3959-2595 | - |
crisitem.author.orcid | 0000-0003-1200-5071 | - |
crisitem.author.orcid | 0000-0001-7551-2252 | - |
crisitem.author.orcid | 0000-0003-2910-6565 | - |
crisitem.author.orcid | 0000-0002-7409-8114 | - |
crisitem.author.orcid | 0000-0001-5570-5081 | - |
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 | |
---|---|---|---|---|
aa39576-20.pdf | Pdf editoriale | 580.7 kB | Adobe PDF | View/Open |
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