Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/26553
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lieu, Maggie | en_US |
dc.contributor.author | Farr, Will M. | en_US |
dc.contributor.author | Betancourt, Michael | en_US |
dc.contributor.author | Smith, Graham P. | en_US |
dc.contributor.author | Sereno, Mauro | en_US |
dc.contributor.author | McCarthy, Ian G. | en_US |
dc.date.accessioned | 2020-07-22T05:25:02Z | - |
dc.date.available | 2020-07-22T05:25:02Z | - |
dc.date.issued | 2017 | en_US |
dc.identifier.issn | 0035-8711 | en_US |
dc.identifier.uri | http://hdl.handle.net/20.500.12386/26553 | - |
dc.description.abstract | Mass is a fundamental property of galaxy groups and clusters. In principle, weak gravitational lensing will enable an approximately unbiased measurement of mass, but parametric methods for extracting cluster masses from data require the additional knowledge of halo concentration. Measurements of both mass and concentration are limited by the degeneracy between the two parameters, particularly in low-mass, high-redshift systems where the signal to noise is low. In this paper, we develop a hierarchical model of mass and concentration for mass inference, we test our method on toy data and then apply it to a sample of galaxy groups and poor clusters down to masses of ∼ 10<SUP>13</SUP> M<SUB>☉</SUB>. Our fit and model gives a relationship among masses, concentrations and redshift that allow prediction of these parameters from incomplete and noisy future measurements. Additionally, the underlying population can be used to infer an observationally based concentration-mass relation. Our method is equivalent to a quasi-stacking approach with the degree of stacking set by the data. We also demonstrate that mass and concentration derived from pure stacking can be offset from the population mean with differing values depending on the method of stacking. | en_US |
dc.language.iso | eng | en_US |
dc.title | Hierarchical inference of the relationship between concentration and mass in galaxy groups and clusters | en_US |
dc.type | Article | - |
dc.identifier.doi | 10.1093/mnras/stx686 | en_US |
dc.identifier.scopus | 2-s2.0-85029086931 | en_US |
dc.identifier.isi | 000402819700088 | en_US |
dc.identifier.url | https://academic.oup.com/mnras/article/468/4/4872/3077191 | en_US |
dc.relation.medium | STAMPA | en_US |
dc.relation.volume | 468 | en_US |
dc.relation.issue | 4 | en_US |
dc.relation.firstpage | 4872 | 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 | en_US |
dc.identifier.adsbibcode | 2017MNRAS.468.4872L | 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::PE9_6 Stars and stellar systems | 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.fulltext | With Fulltext | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | open | - |
crisitem.journal.journalissn | 0035-8711 | - |
crisitem.journal.ance | E112946 | - |
crisitem.author.dept | OAS Bologna | - |
crisitem.author.orcid | 0000-0003-0302-0325 | - |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
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Hierarchical.pdf | PDF editoriale | 7.16 MB | Adobe PDF | View/Open |
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Items in DSpace are published in Open Access, unless otherwise indicated.