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dc.contributor.author
Marini, I.  
dc.contributor.author
Borgani, S.  
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Saro, A.  
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Granato, Gian Luigi  
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Ragone Figueroa, Cinthia Judith  
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Sartoris, B.  
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Dolag, K.  
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Murante, G.  
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Ragagnin, A.  
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Wang, Y.  
dc.date.available
2022-09-27T11:06:01Z  
dc.date.issued
2021-11  
dc.identifier.citation
Marini, I.; Borgani, S.; Saro, A.; Granato, Gian Luigi; Ragone Figueroa, Cinthia Judith; et al.; Velocity dispersion of brightest cluster galaxies in cosmological simulations; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 507; 4; 11-2021; 5780-5795  
dc.identifier.issn
0035-8711  
dc.identifier.uri
http://hdl.handle.net/11336/170551  
dc.description.abstract
Using the DIANOGA hydrodynamical zoom-in simulation set of galaxy clusters, we analyse the dynamics traced by stars belonging to the brightest cluster galaxies (BCGs) and their surrounding diffuse component, forming the intracluster light (ICL), and compare it to the dynamics traced by dark matter and galaxies identified in the simulations. We compute scaling relations between the BCG and cluster velocity dispersions and their corresponding masses (i.e. MBCG*–σBCG*, M200–σ200, MBCG*–M200, and σBCG*–σ200), we find in general a good agreement with observational results. Our simulations also predict σBCG* –σ200 relation to not change significantly up to redshift z = 1, in line with a relatively slow accretion of the BCG stellar mass at late times. We analyse the main features of the velocity dispersion profiles, as traced by stars, dark matter, and galaxies. As a result, we discuss that observed stellar velocity dispersion profiles in the inner cluster regions are in excellent agreement with simulations. We also report that the slopes of the BCG velocity dispersion profile from simulations agree with what is measured in observations, confirming the existence of a robust correlation between the stellar velocity dispersion slope and the cluster velocity dispersion (thus, cluster mass) when the former is computed within 0.1R500. Our results demonstrate that simulations can correctly describe the dynamics of BCGs and their surrounding stellar envelope, as determined by the past star formation and assembly histories of the most massive galaxies of the Universe.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Wiley Blackwell Publishing, Inc  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
GALAXIES: CLUSTERS: GENERAL  
dc.subject
GALAXIES: ELLIPTICAL AND LENTICULAR, CD  
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GALAXIES: EVOLUTION  
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GALAXIES: STELLAR CONTENT  
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METHODS: NUMERICAL  
dc.subject.classification
Astronomía  
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Ciencias Físicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Velocity dispersion of brightest cluster galaxies in cosmological simulations  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2022-09-21T13:53:27Z  
dc.journal.volume
507  
dc.journal.number
4  
dc.journal.pagination
5780-5795  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Londres  
dc.description.fil
Fil: Marini, I.. Università degli Studi di Trieste; Italia  
dc.description.fil
Fil: Borgani, S.. Università degli Studi di Trieste; Italia. Istituto Nazionale di Astrofisica; Italia  
dc.description.fil
Fil: Saro, A.. Istituto Nazionale di Astrofisica; Italia. Università degli Studi di Trieste; Italia  
dc.description.fil
Fil: Granato, Gian Luigi. Istituto Nazionale di Astrofisica; Italia  
dc.description.fil
Fil: Ragone Figueroa, Cinthia Judith. Istituto Nazionale di Astrofisica; Italia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina  
dc.description.fil
Fil: Sartoris, B.. Istituto Nazionale di Astrofisica; Italia  
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Fil: Dolag, K.. Universitat Erlangen-nurmberg. Astronomisches Institut-dr. Karl Remeis-sternwarte & Ecap; Alemania  
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Fil: Murante, G.. Istituto Nazionale di Astrofisica; Italia  
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Fil: Ragagnin, A.. Istituto Nazionale di Astrofisica; Italia  
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Fil: Wang, Y.. Sun Yat-sen University; China  
dc.journal.title
Monthly Notices of the Royal Astronomical Society  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/507/4/5780/6366259  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stab2518