Tracking the orbit of unresolved subhalos for semi-analytic models

Autores
Delfino, Facundo Manuel; Scoccola, Claudia Graciela; Cora, Sofia Alejandra; Vega Martínez, Cristian Antonio; Gargiulo, Ignacio Daniel
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present an updated model for the evolution of the orbits of "orphangalaxies" to be used in the SAG semi-analytical model of galaxy formation andevolution. In cosmological simulations, orphan galaxies are those satellitegalaxies for which, due to limited mass resolution, halo finders lose track oftheir dark matter subhalos and can no longer be distinguished as self-boundoverdensities within the larger host system. Since the evolution of orphansdepends strongly on the orbit they describe within their host halo, a propertreatment of their evolution is crucial in predicting the distribution ofsubhalos and satellite galaxies. The model proposed takes into account thedynamical friction drag, mass loss by tidal stripping and a proximity mergercriterion, also it is simple enough to be inexpensive from a computationalpoint of view. To calibrate this model, we apply it onto a dark matter onlysimulation and compare the results with a high resolution simulation,considering the halo mass function and the two-point correlation function asconstraints. We show that while the halo mass function fails to put tightconstraints on the dynamical friction, the addition of clustering informationhelps to better define the parameters of the model related to the spatialdistribution of subhalos. Using the model with the best fit parameters allowsus to reproduce the halo mass function to a precision better than 5 per cent,and the two point correlation function at a precision better than 10 per cent.
Fil: Delfino, Facundo Manuel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Scoccola, Claudia Graciela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Cora, Sofia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Vega Martínez, Cristian Antonio. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Materia
GALAXIES:FORMATION
GALAXIES:EVOLUTION
GALAXIES:HALOES
METHODS:NUMERICAL
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:11336/164656
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Tracking the orbit of unresolved subhalos for semi-analytic modelsDelfino, Facundo ManuelScoccola, Claudia GracielaCora, Sofia AlejandraVega Martínez, Cristian AntonioGargiulo, Ignacio DanielGALAXIES:FORMATIONGALAXIES:EVOLUTIONGALAXIES:HALOESMETHODS:NUMERICALhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present an updated model for the evolution of the orbits of "orphangalaxies" to be used in the SAG semi-analytical model of galaxy formation andevolution. In cosmological simulations, orphan galaxies are those satellitegalaxies for which, due to limited mass resolution, halo finders lose track oftheir dark matter subhalos and can no longer be distinguished as self-boundoverdensities within the larger host system. Since the evolution of orphansdepends strongly on the orbit they describe within their host halo, a propertreatment of their evolution is crucial in predicting the distribution ofsubhalos and satellite galaxies. The model proposed takes into account thedynamical friction drag, mass loss by tidal stripping and a proximity mergercriterion, also it is simple enough to be inexpensive from a computationalpoint of view. To calibrate this model, we apply it onto a dark matter onlysimulation and compare the results with a high resolution simulation,considering the halo mass function and the two-point correlation function asconstraints. We show that while the halo mass function fails to put tightconstraints on the dynamical friction, the addition of clustering informationhelps to better define the parameters of the model related to the spatialdistribution of subhalos. Using the model with the best fit parameters allowsus to reproduce the halo mass function to a precision better than 5 per cent,and the two point correlation function at a precision better than 10 per cent.Fil: Delfino, Facundo Manuel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Scoccola, Claudia Graciela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Cora, Sofia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Vega Martínez, Cristian Antonio. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaWiley Blackwell Publishing, Inc2021-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/164656Delfino, Facundo Manuel; Scoccola, Claudia Graciela; Cora, Sofia Alejandra; Vega Martínez, Cristian Antonio; Gargiulo, Ignacio Daniel; Tracking the orbit of unresolved subhalos for semi-analytic models; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 510; 2; 10-2021; 2900–29190035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/pdf/2102.01837.pdfinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/510/2/2900/6449022?redirectedFrom=fulltextinfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stab3494info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:09:19Zoai:ri.conicet.gov.ar:11336/164656instacron: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:34982025-09-10 13:09:19.711CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Tracking the orbit of unresolved subhalos for semi-analytic models
title Tracking the orbit of unresolved subhalos for semi-analytic models
spellingShingle Tracking the orbit of unresolved subhalos for semi-analytic models
Delfino, Facundo Manuel
GALAXIES:FORMATION
GALAXIES:EVOLUTION
GALAXIES:HALOES
METHODS:NUMERICAL
title_short Tracking the orbit of unresolved subhalos for semi-analytic models
title_full Tracking the orbit of unresolved subhalos for semi-analytic models
title_fullStr Tracking the orbit of unresolved subhalos for semi-analytic models
title_full_unstemmed Tracking the orbit of unresolved subhalos for semi-analytic models
title_sort Tracking the orbit of unresolved subhalos for semi-analytic models
dc.creator.none.fl_str_mv Delfino, Facundo Manuel
Scoccola, Claudia Graciela
Cora, Sofia Alejandra
Vega Martínez, Cristian Antonio
Gargiulo, Ignacio Daniel
author Delfino, Facundo Manuel
author_facet Delfino, Facundo Manuel
Scoccola, Claudia Graciela
Cora, Sofia Alejandra
Vega Martínez, Cristian Antonio
Gargiulo, Ignacio Daniel
author_role author
author2 Scoccola, Claudia Graciela
Cora, Sofia Alejandra
Vega Martínez, Cristian Antonio
Gargiulo, Ignacio Daniel
author2_role author
author
author
author
dc.subject.none.fl_str_mv GALAXIES:FORMATION
GALAXIES:EVOLUTION
GALAXIES:HALOES
METHODS:NUMERICAL
topic GALAXIES:FORMATION
GALAXIES:EVOLUTION
GALAXIES:HALOES
METHODS:NUMERICAL
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 present an updated model for the evolution of the orbits of "orphangalaxies" to be used in the SAG semi-analytical model of galaxy formation andevolution. In cosmological simulations, orphan galaxies are those satellitegalaxies for which, due to limited mass resolution, halo finders lose track oftheir dark matter subhalos and can no longer be distinguished as self-boundoverdensities within the larger host system. Since the evolution of orphansdepends strongly on the orbit they describe within their host halo, a propertreatment of their evolution is crucial in predicting the distribution ofsubhalos and satellite galaxies. The model proposed takes into account thedynamical friction drag, mass loss by tidal stripping and a proximity mergercriterion, also it is simple enough to be inexpensive from a computationalpoint of view. To calibrate this model, we apply it onto a dark matter onlysimulation and compare the results with a high resolution simulation,considering the halo mass function and the two-point correlation function asconstraints. We show that while the halo mass function fails to put tightconstraints on the dynamical friction, the addition of clustering informationhelps to better define the parameters of the model related to the spatialdistribution of subhalos. Using the model with the best fit parameters allowsus to reproduce the halo mass function to a precision better than 5 per cent,and the two point correlation function at a precision better than 10 per cent.
Fil: Delfino, Facundo Manuel. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Scoccola, Claudia Graciela. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Área Física Teórica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
Fil: Cora, Sofia Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Vega Martínez, Cristian Antonio. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Gargiulo, Ignacio Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
description We present an updated model for the evolution of the orbits of "orphangalaxies" to be used in the SAG semi-analytical model of galaxy formation andevolution. In cosmological simulations, orphan galaxies are those satellitegalaxies for which, due to limited mass resolution, halo finders lose track oftheir dark matter subhalos and can no longer be distinguished as self-boundoverdensities within the larger host system. Since the evolution of orphansdepends strongly on the orbit they describe within their host halo, a propertreatment of their evolution is crucial in predicting the distribution ofsubhalos and satellite galaxies. The model proposed takes into account thedynamical friction drag, mass loss by tidal stripping and a proximity mergercriterion, also it is simple enough to be inexpensive from a computationalpoint of view. To calibrate this model, we apply it onto a dark matter onlysimulation and compare the results with a high resolution simulation,considering the halo mass function and the two-point correlation function asconstraints. We show that while the halo mass function fails to put tightconstraints on the dynamical friction, the addition of clustering informationhelps to better define the parameters of the model related to the spatialdistribution of subhalos. Using the model with the best fit parameters allowsus to reproduce the halo mass function to a precision better than 5 per cent,and the two point correlation function at a precision better than 10 per cent.
publishDate 2021
dc.date.none.fl_str_mv 2021-10
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/11336/164656
Delfino, Facundo Manuel; Scoccola, Claudia Graciela; Cora, Sofia Alejandra; Vega Martínez, Cristian Antonio; Gargiulo, Ignacio Daniel; Tracking the orbit of unresolved subhalos for semi-analytic models; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 510; 2; 10-2021; 2900–2919
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/164656
identifier_str_mv Delfino, Facundo Manuel; Scoccola, Claudia Graciela; Cora, Sofia Alejandra; Vega Martínez, Cristian Antonio; Gargiulo, Ignacio Daniel; Tracking the orbit of unresolved subhalos for semi-analytic models; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 510; 2; 10-2021; 2900–2919
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/url/https://arxiv.org/pdf/2102.01837.pdf
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/510/2/2900/6449022?redirectedFrom=fulltext
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stab3494
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
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 12.993085

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