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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/33574
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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 Técnicas2025-09-29T10:44:22Zoai: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:34982025-09-29 10:44:22.72CONICET 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 |
_version_ |
1844614481151262720 |
score |
13.070432 |