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dc.contributor.authorSalcedo, Andrés N
dc.contributor.authorMaller, Ariyeh H
dc.contributor.authorBerlind, Andreas A
dc.contributor.authorSinha, Manodeep
dc.contributor.authorMcBride, Cameron K
dc.contributor.authorBehroozi, Peter S
dc.contributor.authorWechsler, Risa H
dc.contributor.authorWeinberg, David H
dc.date.accessioned2018-05-02T18:43:28Z
dc.date.available2018-05-02T18:43:28Z
dc.date.issued2018-04-21
dc.identifier.citationAndrés N Salcedo, Ariyeh H Maller, Andreas A Berlind, Manodeep Sinha, Cameron K McBride, Peter S Behroozi, Risa H Wechsler, David H Weinberg; Spatial clustering of dark matter haloes: secondary bias, neighbour bias, and the influence of massive neighbours on halo properties, Monthly Notices of the Royal Astronomical Society, Volume 475, Issue 4, 21 April 2018, Pages 4411–4423, https://doi.org/10.1093/mnras/sty109en_US
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.doi10.1093/mnras/sty109
dc.identifier.urihttp://hdl.handle.net/10150/627554
dc.description.abstractWe explore the phenomenon commonly known as halo assembly bias, whereby dark matter haloes of the same mass are found to be more or less clustered when a second halo property is considered, for haloes in the mass range 3.7 x 10(11)-5.0 x 10(13) h(-1)M(circle dot). Using the Large Suite of Dark Matter Simulations (LasDamas) we consider nine commonly used halo properties and find that a clustering bias exists if haloes are binned by mass or by any other halo property. This secondary bias implies that no single halo property encompasses all the spatial clustering information of the halo population. The mean values of some halo properties depend on their halo's distance to a more massive neighbour. Halo samples selected by having high values of one of these properties therefore inherit a neighbour bias such that they are much more likely to be close to a much more massive neighbour. This neighbour bias largely accounts for the secondary bias seen in haloes binned by mass and split by concentration or age. However, haloes binned by other mass-like properties still show a secondary bias even when the neighbour bias is removed. The secondary bias of haloes selected by their spin behaves differently than that for other halo properties, suggesting that the origin of the spin bias is different than of other secondary biases.en_US
dc.description.sponsorshipDepartment of Energy Computational Science Graduate Fellowship Program of the Office of Science; National Nuclear Security Administration in the Department of Energy [DE-FG02-97ER25308]; NSF Career Award [AST-1151650]; Australian Research Council Centre of Excellence for All Sky Astrophysics in 3 Dimensions (ASTRO 3D) [CE170100013]; NSF [AST-1516997]; [NSF-REU 1263045]en_US
dc.language.isoenen_US
dc.publisherOXFORD UNIV PRESSen_US
dc.relation.urlhttps://academic.oup.com/mnras/article/475/4/4411/4810556en_US
dc.rights© 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Societyen_US
dc.subjectmethods: numericalen_US
dc.subjectgalaxies: formationen_US
dc.subjectgalaxies: haloesen_US
dc.subjectdark matteren_US
dc.subjectlarge-scale structure of Universeen_US
dc.subjectcosmology: theoryen_US
dc.titleSpatial clustering of dark matter haloes: secondary bias, neighbour bias, and the influence of massive neighbours on halo propertiesen_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Steward Observen_US
dc.identifier.journalMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETYen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.journaltitleMonthly Notices of the Royal Astronomical Society
dc.source.volume475
dc.source.issue4
dc.source.beginpage4411
dc.source.endpage4423
refterms.dateFOA2018-05-02T18:43:29Z


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