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dc.contributor.author
Ragone Figueroa, Cinthia Judith
dc.contributor.author
Granato, Gian Luigi
dc.contributor.author
Murante, Giuseppe
dc.contributor.author
Borgani, Stefano
dc.contributor.author
Cui, Weiguang
dc.date.available
2015-10-09T15:23:37Z
dc.date.issued
2013-12
dc.identifier.citation
Ragone Figueroa, Cinthia Judith; Granato, Gian Luigi; Murante, Giuseppe; Borgani, Stefano; Cui, Weiguang; Brightest cluster galaxies in cosmological simulations: achievements and limitations of active galactic nuclei feedback models; Wiley-blackwell Publishing, Inc; Monthly Notices Of The Royal Astronomical Society; 436; 12-2013; 1750-1764
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/2458
dc.description.abstract
We analyse the basic properties of brightest cluster galaxies (BCGs) produced by state of the art cosmological zoom-in hydrodynamical simulations. These simulations have been run with different subgrid physics included. Here we focus on the results obtained with and without the inclusion of the prescriptions for supermassive black hole growth and of the ensuing active galactic nuclei (AGN) feedback. The latter process goes in the right direction of decreasing significantly the overall formation of stars. However, BCGs end up still containing too much stellar mass, a problem that increases with halo mass, and having an unsatisfactory structure. This is in the sense that their effective radii are too large, and that their density profiles feature a flattening on scales much larger than observed. We also find that our model of thermal AGN feedback has very little effect on the stellar velocity dispersions, which turn out to be very large. Taken together, these problems, which to some extent can be recognized also in other numerical studies typically dealing with smaller halo masses, indicate that on one hand present day subresolution models of AGN feedback are not effective enough in diminishing the global formation of stars in the most massive galaxies, but on the other hand they are relatively too effective in their centres. It is likely that a form of feedback generating large-scale gas outflows from BCGs precursors, and a more widespread effect over the galaxy volume, can alleviate these difficulties.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley-blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Methods: Numerical
dc.subject
Galaxies: Elliptical And Lenticulars, Cd
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Galaxies: Evolution
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Galaxies: Formation
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Galaxies: Haloes
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Quasars: General
dc.subject.classification
Astronomía
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Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Brightest cluster galaxies in cosmological simulations: achievements and limitations of active galactic nuclei feedback models
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
436
dc.journal.pagination
1750-1764
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.conicet.avisoEditorial
This article has been accepted for publication in Monthly Notices Of The Royal Astronomical Society Published by Oxford University Press on behalf of the Royal Astronomical Society.
dc.description.fil
Fil: Ragone Figueroa, Cinthia Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina; Istituto Nazionale Di Astrofisica; Italia;
dc.description.fil
Fil: Granato, Gian Luigi. Istituto Nazionale Di Astrofisica; Italia;
dc.description.fil
Fil: Murante, Giuseppe. Istituto Nazionale Di Astrofisica; Italia;
dc.description.fil
Fil: Borgani, Stefano. Istituto Nazionale Di Astrofisica; Italia; University of Trieste. Department of Physics. Astronomy Unit; Italia;
dc.description.fil
Fil: Cui, Weiguang. Istituto Nazionale Di Astrofisica; Italia; University of Trieste. Department of Physics. Astronomy Unit; Italia;
dc.journal.title
Monthly Notices Of The Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stt1693
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/436/2/1750.abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2013MNRAS.436.1750R
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