Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/24883
Campo DC | Valore | Lingua |
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dc.contributor.author | Baran, N. | en_US |
dc.contributor.author | Smolčić, V. | en_US |
dc.contributor.author | Milaković, D. | en_US |
dc.contributor.author | Novak, M. | en_US |
dc.contributor.author | Delhaize, J. | en_US |
dc.contributor.author | GASTALDELLO, FABIO | en_US |
dc.contributor.author | Ramos-Ceja, M. E. | en_US |
dc.contributor.author | Pacaud, F. | en_US |
dc.contributor.author | Bourke, S. | en_US |
dc.contributor.author | Carilli, C. L. | en_US |
dc.contributor.author | ETTORI, STEFANO | en_US |
dc.contributor.author | Hallinan, G. | en_US |
dc.contributor.author | Horellou, C. | en_US |
dc.contributor.author | Koulouridis, E. | en_US |
dc.contributor.author | CHIAPPETTI, LUCIO | en_US |
dc.contributor.author | Miettinen, O. | en_US |
dc.contributor.author | Melnyk, O. | en_US |
dc.contributor.author | Mooley, K. | en_US |
dc.contributor.author | Pierre, M. | en_US |
dc.contributor.author | Pompei, E. | en_US |
dc.contributor.author | Schinnerer, E. | en_US |
dc.date.accessioned | 2020-05-15T14:33:52Z | - |
dc.date.available | 2020-05-15T14:33:52Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0004-6361 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24883 | - |
dc.description.abstract | We present observations with the Karl G. Jansky Very Large Array (VLA) at 3 GHz (10 cm) toward a sub-field of the XXL-North 25 deg<SUP>2</SUP> field targeting the first supercluster discovered in the XXL Survey. The structure has been found at a spectroscopic redshift of 0.43 and extending over 0.̊35 × 0.̊1 on the sky. The aim of this paper is twofold. First, we present the 3 GHz VLA radio continuum observations, the final radio mosaic and radio source catalogue, and, second, we perform a detailed analysis of the supercluster in the optical and radio regimes using photometric redshifts from the CFHTLS survey and our new VLA-XXL data. Our final 3 GHz radio mosaic has a resolution of 3.̋2 × 1.̋9, and encompasses an area of 41' × 41' with rms noise level lower than ~ 20 μJy beam<SUP>-1</SUP>. The noise in the central 15' × 15' region is ≈ 11 μJy beam<SUP>-1</SUP>. From the mosaic we extract a catalogue of 155 radio sources with signal-to-noise ratio (S/N) ≥ 6, eight of which are large, multicomponent sources, and 123 (79%) of which can be associated with optical sources in the CFHTLS W1 catalogue. Applying Voronoi tessellation analysis (VTA) in the area around the X-ray identified supercluster using photometric redshifts from the CFHTLS survey we identify a total of seventeen overdensities at z<SUB>phot</SUB> = 0.35 - 0.50, 7 of which are associated with clusters detected in the XMM-Newton XXL data. We find a mean photometric redshift of 0.43 for our overdensities, consistent with the spectroscopic redshifts of the brightest cluster galaxies of seven X-ray detected clusters. The full VTA-identified structure extends over ~ 0.̊6 × 0.̊2 on the sky, which corresponds to a physical size of ~ 12 × 4 Mpc<SUP>2</SUP> at z = 0.43. No large radio galaxies are present within the overdensities, and we associate eight (S/N> 7) radio sources with potential group/cluster member galaxies. The spatial distribution of the red and blue VTA-identified potential group member galaxies, selected by their observed g - r colours, suggests that the clusters are not virialised yet, but are dynamically young, as expected for hierarchical structure growth in a ΛCDM universe. Further spectroscopic data are required to analyse the dynamical state of the groups. <P />The full catalogue is available as a queryable database table XXL_VLA_15 via the XXL Master Catalogue browser <A href="http://cosmosdb.iasf-milano.inaf.it/XXL">http://cosmosdb.iasf-milano.inaf.it/XXL</A>. A copy of the catalogue and the mosaic are also available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://130.79.128.5">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?IX/49">http://cdsarc.u-strasbg.fr/viz-bin/qcat?IX/49</A>A FITS file of the reduced image is only available at the CDS via anonymous ftp to <A href="http://cdsarc.u-strasbg.fr">http://cdsarc.u-strasbg.fr</A> (<A href="http://130.79.128.5">http://130.79.128.5</A>) or via <A href="http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/592/A8">http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/592/A8</A> | en_US |
dc.language.iso | eng | en_US |
dc.title | The XXL Survey. IX. Optical overdensity and radio continuum analysis of a supercluster at z = 0.43 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1051/0004-6361/201526952 | en_US |
dc.identifier.scopus | 2-s2.0-84975497546 | en_US |
dc.identifier.isi | 000384722600022 | en_US |
dc.identifier.url | https://www.aanda.org/articles/aa/abs/2016/08/aa26952-15/aa26952-15.html | en_US |
dc.relation.medium | ELETTRONICO | en_US |
dc.relation.volume | 592 | en_US |
dc.relation.firstpage | A8 | 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 | 2016A&A...592A...8B | 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.dept | IASF Milano | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0002-9112-0184 | - |
crisitem.author.orcid | 0000-0003-4117-8617 | - |
crisitem.author.orcid | 0000-0001-7857-7908 | - |
crisitem.journal.journalissn | 0004-6361 | - |
crisitem.journal.ance | E016240 | - |
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1607.02146.pdf | postprint | 4.16 MB | Adobe PDF | Visualizza/apri |
A&A 2016 Baran_compressed.pdf | PDF editoriale | 4.71 MB | Adobe PDF | Visualizza/apri |
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