Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27680
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jauzac, M. | en_US |
dc.contributor.author | Eckert, D. | en_US |
dc.contributor.author | Schaller, M. | en_US |
dc.contributor.author | Schwinn, J. | en_US |
dc.contributor.author | Massey, R. | en_US |
dc.contributor.author | Bahé, Y. | en_US |
dc.contributor.author | Baugh, C. | en_US |
dc.contributor.author | Barnes, D. | en_US |
dc.contributor.author | Dalla Vecchia, C. | en_US |
dc.contributor.author | Ebeling, H. | en_US |
dc.contributor.author | Harvey, D. | en_US |
dc.contributor.author | Jullo, E. | en_US |
dc.contributor.author | Kay, S. T. | en_US |
dc.contributor.author | Kneib, J. -P. | en_US |
dc.contributor.author | Limousin, M. | en_US |
dc.contributor.author | Medezinski, E. | en_US |
dc.contributor.author | Natarajan, P. | en_US |
dc.contributor.author | NONINO, Mario | en_US |
dc.contributor.author | Robertson, A. | en_US |
dc.contributor.author | Tam, S. I. | en_US |
dc.contributor.author | Umetsu, K. | en_US |
dc.date.accessioned | 2020-10-08T15:21:07Z | - |
dc.date.available | 2020-10-08T15:21:07Z | - |
dc.date.issued | 2018 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/27680 | - |
dc.description | MN acknowledges PRIN INAF 2014 1.05.01.94.02. | en_US |
dc.description.abstract | We present a gravitational lensing and X-ray analysis of a massive galaxy cluster and its surroundings. The core of MACS J0717.5+3745 (M(R<1 Mpc)∼ 2 × 10^{15} M_{☉ }, z = 0.54) is already known to contain four merging components. We show that this is surrounded by at least seven additional substructures with masses ranging 3.8{-}6.5× 10^{13} M_{☉}, at projected radii 1.6-4.9 Mpc. We compare MACS J0717 to mock lensing and X-ray observations of similarly rich clusters in cosmological simulations. The low gas fraction of substructures predicted by simulations turns out to match our observed values of 1-4{{ per cent}}. Comparing our data to three similar simulated haloes, we infer a typical growth rate and substructure infall velocity. That suggests MACS J0717 could evolve into a system similar to, but more massive than, Abell 2744 by z = 0.31, and into a ∼ 10^{16} M_{☉} supercluster by z = 0. The radial distribution of infalling substructure suggests that merger events are strongly episodic; however, we find that the smooth accretion of surrounding material remains the main source of mass growth even for such massive clusters. | en_US |
dc.language.iso | eng | en_US |
dc.title | Growing a `cosmic beast': observations and simulations of MACS J0717.5+3745 | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/sty2366 | en_US |
dc.identifier.scopus | 2-s2.0-85054277185 | en_US |
dc.identifier.isi | 000450984100005 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/481/3/2901/5088368 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 481 | en_US |
dc.relation.issue | 3 | en_US |
dc.relation.firstpage | 2901 | en_US |
dc.relation.lastpage | 2917 | 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 | 2018MNRAS.481.2901J | 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. Trieste | - |
crisitem.author.orcid | 0000-0001-6342-9662 | - |
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 | |
---|---|---|---|---|
macsj0717_mnras_sty2366.pdf | Pdf editoriale | 2.47 MB | Adobe PDF | View/Open |
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