Utilizza questo identificativo per citare o creare un link a questo documento:
http://hdl.handle.net/20.500.12386/24331
Campo DC | Valore | Lingua |
---|---|---|
dc.contributor.author | Cui, Weiguang | en_US |
dc.contributor.author | Power, Chris | en_US |
dc.contributor.author | BIFFI, VERONICA | en_US |
dc.contributor.author | BORGANI, STEFANO | en_US |
dc.contributor.author | MURANTE, Giuseppe | en_US |
dc.contributor.author | Fabjan, Dunja | en_US |
dc.contributor.author | Knebe, Alexander | en_US |
dc.contributor.author | Lewis, Geraint F. | en_US |
dc.contributor.author | Poole, Greg B. | en_US |
dc.date.accessioned | 2020-04-29T14:29:52Z | - |
dc.date.available | 2020-04-29T14:29:52Z | - |
dc.date.issued | 2016 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/24331 | - |
dc.description.abstract | Galaxy clusters are an established and powerful test-bed for theories of both galaxy evolution and cosmology. Accurate interpretation of cluster observations often requires robust identification of the location of the centre. Using a statistical sample of clusters drawn from a suite of cosmological simulations in which we have explored a range of galaxy formation models, we investigate how the location of this centre is affected by the choice of observable - stars, hot gas, or the full mass distribution as can be probed by the gravitational potential. We explore several measures of cluster centre: the minimum of the gravitational potential, which would expect to define the centre if the cluster is in dynamical equilibrium; the peak of the density; the centre of brightest cluster galaxy (BCG); and the peak and centroid of X-ray luminosity. We find that the centre of BCG correlates more strongly with the minimum of the gravitational potential than the X-ray defined centres, while active galactic nuclei feedback acts to significantly enhance the offset between the peak X-ray luminosity and minimum gravitational potential. These results highlight the importance of centre identification when interpreting clusters observations, in particular when comparing theoretical predictions and observational data. | en_US |
dc.language.iso | eng | en_US |
dc.title | How does our choice of observable influence our estimation of the centre of a galaxy cluster? Insights from cosmological simulations | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stv2839 | en_US |
dc.identifier.scopus | 2-s2.0-84963793011 | en_US |
dc.identifier.isi | 000372265200021 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/456/3/2566/1099321 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 456 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 2566 | en_US |
dc.type.referee | REF_1 | en_US |
dc.description.international | sì | en_US |
dc.contributor.country | ITA | 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.456.2566C | en_US |
dc.description.apc | no | en_US |
dc.description.oa | 1 – prodotto con file in versione Open Access (allegherò 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. Trieste | - |
crisitem.author.dept | O.A. Trieste | - |
crisitem.author.orcid | 0000-0001-6151-6439 | - |
crisitem.author.orcid | 0000-0002-5155-130X | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
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