Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/29204
DC Field | Value | Language |
---|---|---|
dc.contributor.author | LIU, ANG | en_US |
dc.contributor.author | TOZZI, Paolo | en_US |
dc.contributor.author | Yu, Heng | en_US |
dc.contributor.author | DE GRANDI, Sabrina | en_US |
dc.contributor.author | ETTORI, STEFANO | en_US |
dc.date.accessioned | 2020-12-28T11:53:52Z | - |
dc.date.available | 2020-12-28T11:53:52Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/29204 | - |
dc.description.abstract | We investigate the spatial distribution of iron in the intracluster medium (ICM) in a selected sample of 41 relaxed clusters in the redshift range 0.05 < z < 1.03 using Chandra archival data. We compute the azimuthally averaged, deprojected Z<SUB>Fe</SUB> profile of each cluster out to ∼0.4r<SUB>500</SUB>, and identify a peak in the distribution of iron followed by a flatter distribution at larger radii. Due to the steep gradient both in gas density and abundance, we find that the emission-weighted iron abundance within 0.2r<SUB>500</SUB>, which entirely includes the iron peak in most of the cases, is on average ∼25 per cent higher than the mass-weighted value, showing that spatially resolved analysis and accurate deprojection are key to study the evolution of iron enrichment in the very central regions of cool-core clusters. We quantify the extent of the iron distribution in each cluster with a normalized scale parameter r<SUB>Fe</SUB>, defined as the radius where the iron abundance excess is half of its peak value. We find that r<SUB>Fe</SUB> increases by a factor of ∼3 from z ∼ 1 to z ∼ 0.1, suggesting that the spatial distribution of iron in the ICM extends with time, possibly due to the mixing with the mechanical-mode feedback from the central galaxy. We also find that the iron mass excess within 0.3r<SUB>500</SUB>, when normalized to the total baryonic mass within the same region, does not evolve significantly, showing that this iron mass component is already established at z ∼ 1. | en_US |
dc.language.iso | eng | en_US |
dc.title | Spatial distribution of metals in the ICM: evolution of the iron excess in relaxed galaxy clusters | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/sty2294 | en_US |
dc.identifier.scopus | 2-s2.0-85054093018 | en_US |
dc.identifier.isi | 000449651400027 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/481/1/361/5078375 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 481 | en_US |
dc.relation.issue | 1 | en_US |
dc.relation.firstpage | 361 | en_US |
dc.relation.lastpage | 372 | en_US |
dc.relation.numberofpages | 12 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.numberofauthors | 5 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | en_US |
dc.contributor.country | CHN | 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 | 2018MNRAS.481..361L | 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 | O.A. Arcetri | - |
crisitem.author.dept | O.A. Brera | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0003-3501-0359 | - |
crisitem.author.orcid | 0000-0003-3096-9966 | - |
crisitem.author.orcid | 0000-0002-6385-8501 | - |
crisitem.author.orcid | 0000-0003-4117-8617 | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
sty2294.pdf | pdf editoriale | 4.03 MB | Adobe PDF | View/Open |
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