Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27584
DC Field | Value | Language |
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dc.contributor.author | Melnyk, O. | en_US |
dc.contributor.author | Elyiv, A. | en_US |
dc.contributor.author | Smolčić, V. | en_US |
dc.contributor.author | Plionis, M. | en_US |
dc.contributor.author | Koulouridis, E. | en_US |
dc.contributor.author | Fotopoulou, S. | en_US |
dc.contributor.author | CHIAPPETTI, LUCIO | en_US |
dc.contributor.author | Adami, C. | en_US |
dc.contributor.author | Baran, N. | en_US |
dc.contributor.author | Butler, A. | en_US |
dc.contributor.author | Delhaize, J. | en_US |
dc.contributor.author | Delvecchio, I. | en_US |
dc.contributor.author | Finet, F. | en_US |
dc.contributor.author | Huynh, M. | en_US |
dc.contributor.author | Lidman, C. | en_US |
dc.contributor.author | Pierre, M. | en_US |
dc.contributor.author | Pompei, E. | en_US |
dc.contributor.author | Vignali, C. | en_US |
dc.contributor.author | Surdej, J. | en_US |
dc.date.accessioned | 2020-10-05T13:45:40Z | - |
dc.date.available | 2020-10-05T13:45:40Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27584 | - |
dc.description.abstract | Context. This work is part of a series of studies focusing on the environment and the properties of the X-ray selected active galactic nuclei (AGN) population from the XXL survey. The present survey, given its large area, continuity, extensive multiwavelength coverage, and large-scale structure information, is ideal for this kind of study. Here, we focus on the XXL-South (XXL-S) field. <BR /> Aims: Our main aim is to study the environment of the various types of X-ray selected AGN and investigate its possible role in AGN triggering and evolution. <BR /> Methods: We studied the large-scale (>1 Mpc) environment up to redshift z = 1 using the nearest neighbour distance method to compare various pairs of AGN types. We also investigated the small-scale environment (<0.4 Mpc) by calculating the local overdensities of optical galaxies. In addition, we built a catalogue of AGN concentrations with two or more members using the hierarchical clustering method and we correlated them with the X-ray galaxy clusters detected in the XXL survey. <BR /> Results: It is found that radio detected X-ray sources are more obscured than non-radio ones, though not all radio sources are obscured AGN. We did not find any significant differences in the large-scale clustering between luminous and faint X-ray AGN, or between obscured and unobscured ones, or between radio and non-radio sources. At local scales (<0.4 Mpc), AGN typically reside in overdense regions, compared to non-AGN; however, no differences were found between the various types of AGN. A majority of AGN concentrations with two or more members are found in the neighbourhood of X-ray galaxy clusters within <25-45 Mpc. Our results suggest that X-ray AGN are typically located in supercluster filaments, but they are also found in over- and underdense regions. | en_US |
dc.language.iso | eng | en_US |
dc.title | The XXL Survey. XXI. The environment and clustering of X-ray AGN in the XXL-South field | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201730479 | en_US |
dc.identifier.scopus | 2-s2.0-85057265975 | en_US |
dc.identifier.isi | 000450930100006 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/full_html/2018/12/aa30479-17/aa30479-17.html | en_US |
dc.identifier.url | https://arxiv.org/abs/1712.01872 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 620 | en_US |
dc.relation.firstpage | A6 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.note | Part of the second data release of the XXL Survey. Associated data is accessible via CDS and via the XXL Database hosted at IASF-MI | 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 | 2018A&A...620A...6M | 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 | 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.orcid | 0000-0001-7857-7908 | - |
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 | |
---|---|---|---|---|
j103.pdf | Pdf editoriale | 9.94 MB | Adobe PDF | View/Open |
j103arxiv-1712.01872.pdf | postprint | 469.23 kB | Adobe PDF | View/Open |
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