Numerical simulations of bar formation in the Local Group

Autores
Marioni, Ornela Florentina; Abadi, Mario Gabriel; Gottlöber, Stefan; Yepes, Gustavo
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
More than 50 per cent of present-day massive disc galaxies show a rotating stellar bar. Their formation and dynamics have been widely studied both numerically and observationally. Although numerical simulations in the Lambda cold dark matter (ΛCDM) cosmological framework predict the formation of such stellar components, there seems to be a tension between theoretical and observational results. Simulated bars are typically larger in size and have slower pattern speed than observed ones. We study the formation and evolution of barred galaxies, using two ΛCDM zoom-in hydrodynamical simulations of the CLUES project that follow the evolution of a cosmological Local Group-like volume. We found that our simulated bars, at z = 0, are both shorter and faster rotators than previous ones found in other studies on cosmological simulations alleviating the tension mentioned above. These bars match the short tail-end of the observed bar-length distribution. In agreement with previous numerical works, we find that bars form in those systems where the disc self-gravity is dominant over the dark matter halo, making them unstable against bar formation. Our bars developed in the last 3-4 Gyr until they achieve their current length and strength; as bars grow, their lengths increase while their rotation speeds decrease. Despite this slowdown, at redshift z = 0 their rotation speeds and size match well the observational data.
Fil: Marioni, Ornela Florentina. 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. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Abadi, Mario Gabriel. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Gottlöber, Stefan. Leibniz Institute For Astrophysics Potsdam; Alemania
Fil: Yepes, Gustavo. Universidad Autónoma de Madrid; España
Materia
GALAXIES: BAR
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: KINEMATICS AND DYNAMICS
GALAXIES: SPIRAL
LOCAL GROUP
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:11336/202774
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/202774
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Numerical simulations of bar formation in the Local GroupMarioni, Ornela FlorentinaAbadi, Mario GabrielGottlöber, StefanYepes, GustavoGALAXIES: BARGALAXIES: EVOLUTIONGALAXIES: FORMATIONGALAXIES: KINEMATICS AND DYNAMICSGALAXIES: SPIRALLOCAL GROUPhttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1More than 50 per cent of present-day massive disc galaxies show a rotating stellar bar. Their formation and dynamics have been widely studied both numerically and observationally. Although numerical simulations in the Lambda cold dark matter (ΛCDM) cosmological framework predict the formation of such stellar components, there seems to be a tension between theoretical and observational results. Simulated bars are typically larger in size and have slower pattern speed than observed ones. We study the formation and evolution of barred galaxies, using two ΛCDM zoom-in hydrodynamical simulations of the CLUES project that follow the evolution of a cosmological Local Group-like volume. We found that our simulated bars, at z = 0, are both shorter and faster rotators than previous ones found in other studies on cosmological simulations alleviating the tension mentioned above. These bars match the short tail-end of the observed bar-length distribution. In agreement with previous numerical works, we find that bars form in those systems where the disc self-gravity is dominant over the dark matter halo, making them unstable against bar formation. Our bars developed in the last 3-4 Gyr until they achieve their current length and strength; as bars grow, their lengths increase while their rotation speeds decrease. Despite this slowdown, at redshift z = 0 their rotation speeds and size match well the observational data.Fil: Marioni, Ornela Florentina. 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. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Abadi, Mario Gabriel. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Gottlöber, Stefan. Leibniz Institute For Astrophysics Potsdam; AlemaniaFil: Yepes, Gustavo. Universidad Autónoma de Madrid; EspañaOxford University Press2022-04info: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/11336/202774Marioni, Ornela Florentina; Abadi, Mario Gabriel; Gottlöber, Stefan; Yepes, Gustavo; Numerical simulations of bar formation in the Local Group; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 511; 2; 4-2022; 2423-24330035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stac105info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/2201.05162info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/511/2/2423/6509499?redirectedFrom=fulltextinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:09:41Zoai:ri.conicet.gov.ar:11336/202774instacron: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 13:09:41.494CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Numerical simulations of bar formation in the Local Group
title Numerical simulations of bar formation in the Local Group
spellingShingle Numerical simulations of bar formation in the Local Group
Marioni, Ornela Florentina
GALAXIES: BAR
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: KINEMATICS AND DYNAMICS
GALAXIES: SPIRAL
LOCAL GROUP
title_short Numerical simulations of bar formation in the Local Group
title_full Numerical simulations of bar formation in the Local Group
title_fullStr Numerical simulations of bar formation in the Local Group
title_full_unstemmed Numerical simulations of bar formation in the Local Group
title_sort Numerical simulations of bar formation in the Local Group
dc.creator.none.fl_str_mv Marioni, Ornela Florentina
Abadi, Mario Gabriel
Gottlöber, Stefan
Yepes, Gustavo
author Marioni, Ornela Florentina
author_facet Marioni, Ornela Florentina
Abadi, Mario Gabriel
Gottlöber, Stefan
Yepes, Gustavo
author_role author
author2 Abadi, Mario Gabriel
Gottlöber, Stefan
Yepes, Gustavo
author2_role author
author
author
dc.subject.none.fl_str_mv GALAXIES: BAR
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: KINEMATICS AND DYNAMICS
GALAXIES: SPIRAL
LOCAL GROUP
topic GALAXIES: BAR
GALAXIES: EVOLUTION
GALAXIES: FORMATION
GALAXIES: KINEMATICS AND DYNAMICS
GALAXIES: SPIRAL
LOCAL GROUP
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv More than 50 per cent of present-day massive disc galaxies show a rotating stellar bar. Their formation and dynamics have been widely studied both numerically and observationally. Although numerical simulations in the Lambda cold dark matter (ΛCDM) cosmological framework predict the formation of such stellar components, there seems to be a tension between theoretical and observational results. Simulated bars are typically larger in size and have slower pattern speed than observed ones. We study the formation and evolution of barred galaxies, using two ΛCDM zoom-in hydrodynamical simulations of the CLUES project that follow the evolution of a cosmological Local Group-like volume. We found that our simulated bars, at z = 0, are both shorter and faster rotators than previous ones found in other studies on cosmological simulations alleviating the tension mentioned above. These bars match the short tail-end of the observed bar-length distribution. In agreement with previous numerical works, we find that bars form in those systems where the disc self-gravity is dominant over the dark matter halo, making them unstable against bar formation. Our bars developed in the last 3-4 Gyr until they achieve their current length and strength; as bars grow, their lengths increase while their rotation speeds decrease. Despite this slowdown, at redshift z = 0 their rotation speeds and size match well the observational data.
Fil: Marioni, Ornela Florentina. 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. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Abadi, Mario Gabriel. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. 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: Gottlöber, Stefan. Leibniz Institute For Astrophysics Potsdam; Alemania
Fil: Yepes, Gustavo. Universidad Autónoma de Madrid; España
description More than 50 per cent of present-day massive disc galaxies show a rotating stellar bar. Their formation and dynamics have been widely studied both numerically and observationally. Although numerical simulations in the Lambda cold dark matter (ΛCDM) cosmological framework predict the formation of such stellar components, there seems to be a tension between theoretical and observational results. Simulated bars are typically larger in size and have slower pattern speed than observed ones. We study the formation and evolution of barred galaxies, using two ΛCDM zoom-in hydrodynamical simulations of the CLUES project that follow the evolution of a cosmological Local Group-like volume. We found that our simulated bars, at z = 0, are both shorter and faster rotators than previous ones found in other studies on cosmological simulations alleviating the tension mentioned above. These bars match the short tail-end of the observed bar-length distribution. In agreement with previous numerical works, we find that bars form in those systems where the disc self-gravity is dominant over the dark matter halo, making them unstable against bar formation. Our bars developed in the last 3-4 Gyr until they achieve their current length and strength; as bars grow, their lengths increase while their rotation speeds decrease. Despite this slowdown, at redshift z = 0 their rotation speeds and size match well the observational data.
publishDate 2022
dc.date.none.fl_str_mv 2022-04
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/11336/202774
Marioni, Ornela Florentina; Abadi, Mario Gabriel; Gottlöber, Stefan; Yepes, Gustavo; Numerical simulations of bar formation in the Local Group; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 511; 2; 4-2022; 2423-2433
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/202774
identifier_str_mv Marioni, Ornela Florentina; Abadi, Mario Gabriel; Gottlöber, Stefan; Yepes, Gustavo; Numerical simulations of bar formation in the Local Group; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 511; 2; 4-2022; 2423-2433
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/stac105
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/2201.05162
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/511/2/2423/6509499?redirectedFrom=fulltext
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 Oxford University Press
publisher.none.fl_str_mv Oxford University Press
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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