Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/24765
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Girardi, M. | en_US |
dc.contributor.author | Boschin, W. | en_US |
dc.contributor.author | GASTALDELLO, FABIO | en_US |
dc.contributor.author | Giovannini, G. | en_US |
dc.contributor.author | GOVONI, FEDERICA | en_US |
dc.contributor.author | MURGIA, MATTEO | en_US |
dc.contributor.author | Barrena, R. | en_US |
dc.contributor.author | ETTORI, STEFANO | en_US |
dc.contributor.author | Trasatti, M. | en_US |
dc.contributor.author | VACCA, VALENTINA | en_US |
dc.date.accessioned | 2020-05-13T07:20:14Z | - |
dc.date.available | 2020-05-13T07:20:14Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24765 | - |
dc.description.abstract | We study the structure of the galaxy cluster Abell 523 (A523) at z = 0.104 using new spectroscopic data for 132 galaxies acquired at the Telescopio Nazionale Galileo, new photometric data from the Isaac Newton Telescope, and X-ray and radio data from the Chandra and Very Large Array archives. We estimate the velocity dispersion of the galaxy population, σ _V=949_{-60}^{+80} km s<SUP>-1</SUP>, and the X-ray temperature of the hot intracluster medium, kT = 5.3 ± 0.3 keV. We infer that A523 is a massive system: M<SUB>200</SUB> ∼ 7-9 × 10<SUP>14</SUP> M<SUB>☉</SUB>. The analysis of the optical data confirms the presence of two subclusters, 0.75 Mpc apart, tracing the SSW-NNE direction and dominated by the two brightest cluster galaxies (BCG1 and BCG2). The X-ray surface brightness is strongly elongated towards the NNE direction, and its peak is clearly offset from both the brightest cluster galaxies (BCGs). We confirm the presence of a 1.3 Mpc large radio halo, elongated in the ESE-WNW direction and perpendicular to the optical/X-ray elongation. We detect a significant radio/X-ray offset and radio polarization, two features which might be the result of a magnetic field energy spread on large spatial scales. A523 is found consistent with most scaling relations followed by clusters hosting radio haloes, but quite peculiar in the P<SUB>radio</SUB>-L<SUB>X</SUB> relation: it is underluminous in the X-rays or overluminous in radio. A523 can be described as a binary head-on merger caught after a collision along the SSW-NNE direction. However, minor optical and radio features suggest a more complex cluster structure, with A523 forming at the crossing of two filaments along the SSW-NNE and ESE-WNW directions. | en_US |
dc.language.iso | eng | en_US |
dc.title | A multiwavelength view of the galaxy cluster Abell 523 and its peculiar diffuse radio source | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stv2827 | en_US |
dc.identifier.scopus | 2-s2.0-84964499471 | en_US |
dc.identifier.isi | 000372265200041 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/456/3/2829/1096985 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 456 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 2829 | 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 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | en_US |
dc.type.miur | 262 Articolo in rivista | - |
dc.identifier.adsbibcode | 2016MNRAS.456.2829G | en_US |
dc.relation.ercsector | Scienze Fisiche Settori ERC (ERC) di riferimento::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 |
local.message.claim | 2021-01-19T09:25:39.384+0100|||rp08088|||submit_approve|||dc_contributor_author|||None | * |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | IASF Milano | - |
crisitem.author.dept | IRA Bologna | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.dept | O.A. Cagliari | - |
crisitem.author.orcid | 0000-0002-9112-0184 | - |
crisitem.author.orcid | 0000-0003-4916-6362 | - |
crisitem.author.orcid | 0000-0003-3644-3084 | - |
crisitem.author.orcid | 0000-0002-4800-0806 | - |
crisitem.author.orcid | 0000-0003-4117-8617 | - |
crisitem.author.orcid | 0000-0003-1997-0771 | - |
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Monthly Notices of the Royal Astronomical Society 2016 Girardi.pdf | PDF editoriale | 5.58 MB | Adobe PDF | Visualizza/apri |
1510.05951.pdf | postprint | 1.29 MB | Adobe PDF | Visualizza/apri |
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