Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape

Autores
Hoffmann, Kai; Planelles, Susana; Gaztañaga, Enrique; Knebe, Alexander; Pearce, Frazer R.; Lux, Hanni; Onions, Julian; Muldrew, Stuart I.; Elahi, Pascal; Behroozi, Peter; Ascasibar, Yago; Han, Jiaxin; Maciejewski, Michal; Merchan, Manuel Enrique; Neyrinck, Mark; Ruiz, Andrés Nicolás; Sgró, Mario Agustín
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We study the shapes of subhalo distributions from four dark-matter-only simulations of Milky Way-type haloes. Comparing the shapes derived from the subhalo distributions at high resolution to those of the underlying dark matter fields, we find the former to be more triaxial if the analysis is restricted to massive subhaloes. For three of the four analysed haloes, the increased triaxiality of the distributions of massive subhaloes can be explained by a systematic effect caused by the low number of objects. Subhaloes of the fourth halo show indications for anisotropic accretion via their strong triaxial distribution and orbit alignment with respect to the dark matter field. These results are independent of the employed subhalo finder. Comparing the shape of the observed Milky Way satellite distribution to those of high-resolution subhalo samples from simulations, we find agreement for samples of bright satellites, but significant deviations if faint satellites are included in the analysis. These deviations might result from observational incompleteness.
Fil: Hoffmann, Kai. Instituto de Ciencias del Espacio. Barcelona; España
Fil: Planelles, Susana. Università degli Studi di Trieste; Italia
Fil: Gaztañaga, Enrique. Instituto de Ciencias del Espacio. Barcelona; España
Fil: Knebe, Alexander. Universidad Autónoma de Madrid; España
Fil: Pearce, Frazer R.. The University Of Nottingham; Reino Unido
Fil: Lux, Hanni. The University Of Nottingham; Reino Unido. University of Oxford; Reino Unido
Fil: Onions, Julian. The University Of Nottingham; Reino Unido
Fil: Muldrew, Stuart I.. The University Of Nottingham; Reino Unido. University of Leicester; Reino Unido
Fil: Elahi, Pascal. Shanghai Astronomical Observatory; China. The University of Sydney; Australia
Fil: Behroozi, Peter. Space Telescope Science Institute; Estados Unidos
Fil: Ascasibar, Yago. Universidad Autónoma de Madrid; España
Fil: Han, Jiaxin. Shanghai Astronomical Observatory; China. University Of Durham; Reino Unido
Fil: Maciejewski, Michal. Max-Planck-Institut f ̈ur Astrophysik; Alemania
Fil: Merchan, Manuel Enrique. 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
Fil: Neyrinck, Mark. University Johns Hopkins; Estados Unidos
Fil: Ruiz, Andrés Nicolás. 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
Fil: Sgró, Mario Agustín. 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
Materia
methods: numerical
galaxies: haloes
cosmology: miscellaneous
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/33574
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/33574
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shapeHoffmann, KaiPlanelles, SusanaGaztañaga, EnriqueKnebe, AlexanderPearce, Frazer R.Lux, HanniOnions, JulianMuldrew, Stuart I.Elahi, PascalBehroozi, PeterAscasibar, YagoHan, JiaxinMaciejewski, MichalMerchan, Manuel EnriqueNeyrinck, MarkRuiz, Andrés NicolásSgró, Mario Agustínmethods: numericalgalaxies: haloescosmology: miscellaneoushttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We study the shapes of subhalo distributions from four dark-matter-only simulations of Milky Way-type haloes. Comparing the shapes derived from the subhalo distributions at high resolution to those of the underlying dark matter fields, we find the former to be more triaxial if the analysis is restricted to massive subhaloes. For three of the four analysed haloes, the increased triaxiality of the distributions of massive subhaloes can be explained by a systematic effect caused by the low number of objects. Subhaloes of the fourth halo show indications for anisotropic accretion via their strong triaxial distribution and orbit alignment with respect to the dark matter field. These results are independent of the employed subhalo finder. Comparing the shape of the observed Milky Way satellite distribution to those of high-resolution subhalo samples from simulations, we find agreement for samples of bright satellites, but significant deviations if faint satellites are included in the analysis. These deviations might result from observational incompleteness.Fil: Hoffmann, Kai. Instituto de Ciencias del Espacio. Barcelona; EspañaFil: Planelles, Susana. Università degli Studi di Trieste; ItaliaFil: Gaztañaga, Enrique. Instituto de Ciencias del Espacio. Barcelona; EspañaFil: Knebe, Alexander. Universidad Autónoma de Madrid; EspañaFil: Pearce, Frazer R.. The University Of Nottingham; Reino UnidoFil: Lux, Hanni. The University Of Nottingham; Reino Unido. University of Oxford; Reino UnidoFil: Onions, Julian. The University Of Nottingham; Reino UnidoFil: Muldrew, Stuart I.. The University Of Nottingham; Reino Unido. University of Leicester; Reino UnidoFil: Elahi, Pascal. Shanghai Astronomical Observatory; China. The University of Sydney; AustraliaFil: Behroozi, Peter. Space Telescope Science Institute; Estados UnidosFil: Ascasibar, Yago. Universidad Autónoma de Madrid; EspañaFil: Han, Jiaxin. Shanghai Astronomical Observatory; China. University Of Durham; Reino UnidoFil: Maciejewski, Michal. Max-Planck-Institut f ̈ur Astrophysik; AlemaniaFil: Merchan, Manuel Enrique. 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; ArgentinaFil: Neyrinck, Mark. University Johns Hopkins; Estados UnidosFil: Ruiz, Andrés Nicolás. 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; ArgentinaFil: Sgró, Mario Agustín. 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; ArgentinaWiley Blackwell Publishing, Inc2014-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/33574Neyrinck, Mark; Behroozi, Peter; Lux, Hanni; Onions, Julian; Elahi, Pascal; Gaztañaga, Enrique; et al.; Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 442; 2; 8-2014; 1197-12100035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu933info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/442/2/1197/985032info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:17:30Zoai:ri.conicet.gov.ar:11336/33574instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:17:30.322CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape
title Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape
spellingShingle Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape
Hoffmann, Kai
methods: numerical
galaxies: haloes
cosmology: miscellaneous
title_short Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape
title_full Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape
title_fullStr Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape
title_full_unstemmed Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape
title_sort Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape
dc.creator.none.fl_str_mv Hoffmann, Kai
Planelles, Susana
Gaztañaga, Enrique
Knebe, Alexander
Pearce, Frazer R.
Lux, Hanni
Onions, Julian
Muldrew, Stuart I.
Elahi, Pascal
Behroozi, Peter
Ascasibar, Yago
Han, Jiaxin
Maciejewski, Michal
Merchan, Manuel Enrique
Neyrinck, Mark
Ruiz, Andrés Nicolás
Sgró, Mario Agustín
author Hoffmann, Kai
author_facet Hoffmann, Kai
Planelles, Susana
Gaztañaga, Enrique
Knebe, Alexander
Pearce, Frazer R.
Lux, Hanni
Onions, Julian
Muldrew, Stuart I.
Elahi, Pascal
Behroozi, Peter
Ascasibar, Yago
Han, Jiaxin
Maciejewski, Michal
Merchan, Manuel Enrique
Neyrinck, Mark
Ruiz, Andrés Nicolás
Sgró, Mario Agustín
author_role author
author2 Planelles, Susana
Gaztañaga, Enrique
Knebe, Alexander
Pearce, Frazer R.
Lux, Hanni
Onions, Julian
Muldrew, Stuart I.
Elahi, Pascal
Behroozi, Peter
Ascasibar, Yago
Han, Jiaxin
Maciejewski, Michal
Merchan, Manuel Enrique
Neyrinck, Mark
Ruiz, Andrés Nicolás
Sgró, Mario Agustín
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv methods: numerical
galaxies: haloes
cosmology: miscellaneous
topic methods: numerical
galaxies: haloes
cosmology: miscellaneous
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We study the shapes of subhalo distributions from four dark-matter-only simulations of Milky Way-type haloes. Comparing the shapes derived from the subhalo distributions at high resolution to those of the underlying dark matter fields, we find the former to be more triaxial if the analysis is restricted to massive subhaloes. For three of the four analysed haloes, the increased triaxiality of the distributions of massive subhaloes can be explained by a systematic effect caused by the low number of objects. Subhaloes of the fourth halo show indications for anisotropic accretion via their strong triaxial distribution and orbit alignment with respect to the dark matter field. These results are independent of the employed subhalo finder. Comparing the shape of the observed Milky Way satellite distribution to those of high-resolution subhalo samples from simulations, we find agreement for samples of bright satellites, but significant deviations if faint satellites are included in the analysis. These deviations might result from observational incompleteness.
Fil: Hoffmann, Kai. Instituto de Ciencias del Espacio. Barcelona; España
Fil: Planelles, Susana. Università degli Studi di Trieste; Italia
Fil: Gaztañaga, Enrique. Instituto de Ciencias del Espacio. Barcelona; España
Fil: Knebe, Alexander. Universidad Autónoma de Madrid; España
Fil: Pearce, Frazer R.. The University Of Nottingham; Reino Unido
Fil: Lux, Hanni. The University Of Nottingham; Reino Unido. University of Oxford; Reino Unido
Fil: Onions, Julian. The University Of Nottingham; Reino Unido
Fil: Muldrew, Stuart I.. The University Of Nottingham; Reino Unido. University of Leicester; Reino Unido
Fil: Elahi, Pascal. Shanghai Astronomical Observatory; China. The University of Sydney; Australia
Fil: Behroozi, Peter. Space Telescope Science Institute; Estados Unidos
Fil: Ascasibar, Yago. Universidad Autónoma de Madrid; España
Fil: Han, Jiaxin. Shanghai Astronomical Observatory; China. University Of Durham; Reino Unido
Fil: Maciejewski, Michal. Max-Planck-Institut f ̈ur Astrophysik; Alemania
Fil: Merchan, Manuel Enrique. 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
Fil: Neyrinck, Mark. University Johns Hopkins; Estados Unidos
Fil: Ruiz, Andrés Nicolás. 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
Fil: Sgró, Mario Agustín. 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
description We study the shapes of subhalo distributions from four dark-matter-only simulations of Milky Way-type haloes. Comparing the shapes derived from the subhalo distributions at high resolution to those of the underlying dark matter fields, we find the former to be more triaxial if the analysis is restricted to massive subhaloes. For three of the four analysed haloes, the increased triaxiality of the distributions of massive subhaloes can be explained by a systematic effect caused by the low number of objects. Subhaloes of the fourth halo show indications for anisotropic accretion via their strong triaxial distribution and orbit alignment with respect to the dark matter field. These results are independent of the employed subhalo finder. Comparing the shape of the observed Milky Way satellite distribution to those of high-resolution subhalo samples from simulations, we find agreement for samples of bright satellites, but significant deviations if faint satellites are included in the analysis. These deviations might result from observational incompleteness.
publishDate 2014
dc.date.none.fl_str_mv 2014-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/33574
Neyrinck, Mark; Behroozi, Peter; Lux, Hanni; Onions, Julian; Elahi, Pascal; Gaztañaga, Enrique; et al.; Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 442; 2; 8-2014; 1197-1210
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/33574
identifier_str_mv Neyrinck, Mark; Behroozi, Peter; Lux, Hanni; Onions, Julian; Elahi, Pascal; Gaztañaga, Enrique; et al.; Subhaloes gone Notts: subhaloes as tracers of the dark matter halo shape; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 442; 2; 8-2014; 1197-1210
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu933
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/442/2/1197/985032
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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