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http://hdl.handle.net/20.500.12386/31033
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Asmus, D. | en_US |
dc.contributor.author | Greenwell, C. L. | en_US |
dc.contributor.author | Gandhi, P. | en_US |
dc.contributor.author | Boorman, P. G. | en_US |
dc.contributor.author | Aird, J. | en_US |
dc.contributor.author | Alexander, D. M. | en_US |
dc.contributor.author | Assef, R. J. | en_US |
dc.contributor.author | BALDI, RANIERI DIEGO | en_US |
dc.contributor.author | Davies, R. I. | en_US |
dc.contributor.author | Hönig, S. F. | en_US |
dc.contributor.author | Ricci, C. | en_US |
dc.contributor.author | Rosario, D. J. | en_US |
dc.contributor.author | Salvato, M. | en_US |
dc.contributor.author | Shankar, F. | en_US |
dc.contributor.author | Stern, D. | en_US |
dc.date.accessioned | 2021-09-03T13:23:22Z | - |
dc.date.available | 2021-09-03T13:23:22Z | - |
dc.date.issued | 2020 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/31033 | - |
dc.description.abstract | To answer major questions on supermassive black hole (SMBH) and galaxy evolution, a complete census of SMBH growth, I.e. active galactic nuclei (AGN), is required. Thanks to all-sky surveys by the Wide-field Infrared Survey Explorer (WISE) and the Spectrum-Roentgen-Gamma (SRG) missions, this task is now feasible in the nearby Universe. We present a new survey, the Local AGN Survey (LASr), with the goal of identifying AGN unbiased against obscuration and determining the intrinsic Compton-thick (CT) fraction. We construct the most complete all-sky galaxy sample within 100 Mpc (90 per cent completeness for log (M<SUB>*</SUB>/M<SUB>⊙</SUB>) ∼ 9.4), four times deeper than the current reference, the Two Micron All-Sky Survey Redshift Survey (2MRS), which misses 20 per cent of known luminous AGN. These 49k galaxies serve as parent sample for LASr, called LASr-GPS. It contains 4.3k already known AGN, 82 per cent of these are estimated to have L<SUP>nuc</SUP> (12μm) < 10<SUP>42.3</SUP> erg s<SUP>-1</SUP>, I.e. are low-luminosity AGN. As a first method for identifying Seyfert-like AGN, we use WISE-based infrared colours, finding 221 galaxies at L<SUP>nuc</SUP> (12 μm) ≥ 10<SUP>42.3</SUP> erg s<SUP>-1</SUP> to host an AGN at 90 per cent reliability. This includes 61 new AGN candidates and implies an optical type 2 fraction of 50-71 per cent. We quantify the efficiency of this technique and estimate the total number of AGN with L<SUP>int</SUP> (2-10 keV) ≥ 10<SUP>42</SUP> erg s<SUP>-1</SUP> in the volume to be 362<SUP>+145</SUP><SUB>-116</SUB> (8.6<SUP>+3.5</SUP><SUB>-2.8</SUB> × 10<SUP>-5</SUP> Mpc<SUP>-3</SUP>). X-ray brightness estimates indicate the CT fraction to be 40-55 per cent to explain the Swift non-detections of the infrared selected objects. One third of the AGN within 100 Mpc remain to be identified, and we discuss the prospects for the eROSITA all-sky survey to detect them. | en_US |
dc.language.iso | eng | en_US |
dc.title | Local AGN survey (LASr): I. Galaxy sample, infrared colour selection, and predictions for AGN within 100 Mpc | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/staa766 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/494/2/1784/5809379 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 494 | en_US |
dc.relation.issue | 2 | en_US |
dc.relation.firstpage | 1784 | en_US |
dc.type.referee | REF_1 | 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 | 2020MNRAS.494.1784A | 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 | IRA Bologna | - |
crisitem.author.orcid | 0000-0002-1824-0411 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista |
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File | Descrizione | Dimensioni | Formato | |
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Asmus20.pdf | preprint | 8.05 MB | Adobe PDF | Visualizza/apri |
staa766.pdf | Pdf editoriale | 8.08 MB | Adobe PDF | Visualizza/apri |
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