Dwarf galaxies and the cosmic web

Autores
Benítez Llambay, Alejandro; Navarro, Julio F.; Abadi, Mario Gabriel; Gottlöber, Stefan; Yepes, Gustavo; Hoffman, Yehuda; Steinmetz, Matthias
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We use a cosmological simulation of the formation of the Local Group of Galaxies to identify a mechanism that enables the removal of baryons from low-mass halos without appealing to feedback or reionization. As the Local Group forms, matter bound to it develops a network of filaments and pancakes. This moving web of gas and dark matter drifts and sweeps a large volume, overtaking many halos in the process. The dark matter content of these halos is unaffected but their gas can be efficiently removed by ram pressure. The loss of gas is especially pronounced in low-mass halos due to their lower binding energy and has a dramatic effect on the star formation history of affected systems. This "cosmic web stripping" may help to explain the scarcity of dwarf galaxies compared with the numerous low-mass halos expected in ΛCDM and the large diversity of star formation histories and morphologies characteristic of faint galaxies. Although our results are based on a single high-resolution simulation, it is likely that the hydrodynamical interaction of dwarf galaxies with the cosmic web is a crucial ingredient so far missing from galaxy formation models.
Fil: Benítez Llambay, Alejandro. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Navarro, Julio F.. University Of Victoria; Canadá
Fil: Abadi, Mario Gabriel. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gottlöber, Stefan. Leibniz Institute for Astrophysics; Alemania
Fil: Yepes, Gustavo. Universidad Autónoma de Madrid; España
Fil: Hoffman, Yehuda. The Hebrew University Of Jerusalem; Israel
Fil: Steinmetz, Matthias. Leibniz Institute for Astrophysics; Alemania
Materia
Galaxies
Dwarf
Evolution
Formation
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:11336/24946
Acceder
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spelling Dwarf galaxies and the cosmic webBenítez Llambay, AlejandroNavarro, Julio F.Abadi, Mario GabrielGottlöber, StefanYepes, GustavoHoffman, YehudaSteinmetz, MatthiasGalaxiesDwarfEvolutionFormationWe use a cosmological simulation of the formation of the Local Group of Galaxies to identify a mechanism that enables the removal of baryons from low-mass halos without appealing to feedback or reionization. As the Local Group forms, matter bound to it develops a network of filaments and pancakes. This moving web of gas and dark matter drifts and sweeps a large volume, overtaking many halos in the process. The dark matter content of these halos is unaffected but their gas can be efficiently removed by ram pressure. The loss of gas is especially pronounced in low-mass halos due to their lower binding energy and has a dramatic effect on the star formation history of affected systems. This "cosmic web stripping" may help to explain the scarcity of dwarf galaxies compared with the numerous low-mass halos expected in ΛCDM and the large diversity of star formation histories and morphologies characteristic of faint galaxies. Although our results are based on a single high-resolution simulation, it is likely that the hydrodynamical interaction of dwarf galaxies with the cosmic web is a crucial ingredient so far missing from galaxy formation models.Fil: Benítez Llambay, Alejandro. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Navarro, Julio F.. University Of Victoria; CanadáFil: Abadi, Mario Gabriel. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gottlöber, Stefan. Leibniz Institute for Astrophysics; AlemaniaFil: Yepes, Gustavo. Universidad Autónoma de Madrid; EspañaFil: Hoffman, Yehuda. The Hebrew University Of Jerusalem; IsraelFil: Steinmetz, Matthias. Leibniz Institute for Astrophysics; AlemaniaIOP Publishing2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/24946Benítez Llambay, Alejandro; Navarro, Julio F.; Abadi, Mario Gabriel; Gottlöber, Stefan; Yepes, Gustavo; et al.; Dwarf galaxies and the cosmic web; IOP Publishing; Astrophysical Journal; 763; 1-2013; 1-6; L410004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/763/2/L41info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2041-8205/763/2/L41/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:31:21Zoai:ri.conicet.gov.ar:11336/24946instacron: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 10:31:21.375CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dwarf galaxies and the cosmic web
title Dwarf galaxies and the cosmic web
spellingShingle Dwarf galaxies and the cosmic web
Benítez Llambay, Alejandro
Galaxies
Dwarf
Evolution
Formation
title_short Dwarf galaxies and the cosmic web
title_full Dwarf galaxies and the cosmic web
title_fullStr Dwarf galaxies and the cosmic web
title_full_unstemmed Dwarf galaxies and the cosmic web
title_sort Dwarf galaxies and the cosmic web
dc.creator.none.fl_str_mv Benítez Llambay, Alejandro
Navarro, Julio F.
Abadi, Mario Gabriel
Gottlöber, Stefan
Yepes, Gustavo
Hoffman, Yehuda
Steinmetz, Matthias
author Benítez Llambay, Alejandro
author_facet Benítez Llambay, Alejandro
Navarro, Julio F.
Abadi, Mario Gabriel
Gottlöber, Stefan
Yepes, Gustavo
Hoffman, Yehuda
Steinmetz, Matthias
author_role author
author2 Navarro, Julio F.
Abadi, Mario Gabriel
Gottlöber, Stefan
Yepes, Gustavo
Hoffman, Yehuda
Steinmetz, Matthias
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Galaxies
Dwarf
Evolution
Formation
topic Galaxies
Dwarf
Evolution
Formation
dc.description.none.fl_txt_mv We use a cosmological simulation of the formation of the Local Group of Galaxies to identify a mechanism that enables the removal of baryons from low-mass halos without appealing to feedback or reionization. As the Local Group forms, matter bound to it develops a network of filaments and pancakes. This moving web of gas and dark matter drifts and sweeps a large volume, overtaking many halos in the process. The dark matter content of these halos is unaffected but their gas can be efficiently removed by ram pressure. The loss of gas is especially pronounced in low-mass halos due to their lower binding energy and has a dramatic effect on the star formation history of affected systems. This "cosmic web stripping" may help to explain the scarcity of dwarf galaxies compared with the numerous low-mass halos expected in ΛCDM and the large diversity of star formation histories and morphologies characteristic of faint galaxies. Although our results are based on a single high-resolution simulation, it is likely that the hydrodynamical interaction of dwarf galaxies with the cosmic web is a crucial ingredient so far missing from galaxy formation models.
Fil: Benítez Llambay, Alejandro. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Navarro, Julio F.. University Of Victoria; Canadá
Fil: Abadi, Mario Gabriel. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gottlöber, Stefan. Leibniz Institute for Astrophysics; Alemania
Fil: Yepes, Gustavo. Universidad Autónoma de Madrid; España
Fil: Hoffman, Yehuda. The Hebrew University Of Jerusalem; Israel
Fil: Steinmetz, Matthias. Leibniz Institute for Astrophysics; Alemania
description We use a cosmological simulation of the formation of the Local Group of Galaxies to identify a mechanism that enables the removal of baryons from low-mass halos without appealing to feedback or reionization. As the Local Group forms, matter bound to it develops a network of filaments and pancakes. This moving web of gas and dark matter drifts and sweeps a large volume, overtaking many halos in the process. The dark matter content of these halos is unaffected but their gas can be efficiently removed by ram pressure. The loss of gas is especially pronounced in low-mass halos due to their lower binding energy and has a dramatic effect on the star formation history of affected systems. This "cosmic web stripping" may help to explain the scarcity of dwarf galaxies compared with the numerous low-mass halos expected in ΛCDM and the large diversity of star formation histories and morphologies characteristic of faint galaxies. Although our results are based on a single high-resolution simulation, it is likely that the hydrodynamical interaction of dwarf galaxies with the cosmic web is a crucial ingredient so far missing from galaxy formation models.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/24946
Benítez Llambay, Alejandro; Navarro, Julio F.; Abadi, Mario Gabriel; Gottlöber, Stefan; Yepes, Gustavo; et al.; Dwarf galaxies and the cosmic web; IOP Publishing; Astrophysical Journal; 763; 1-2013; 1-6; L41
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/24946
identifier_str_mv Benítez Llambay, Alejandro; Navarro, Julio F.; Abadi, Mario Gabriel; Gottlöber, Stefan; Yepes, Gustavo; et al.; Dwarf galaxies and the cosmic web; IOP Publishing; Astrophysical Journal; 763; 1-2013; 1-6; L41
0004-637X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/2041-8205/763/2/L41
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/2041-8205/763/2/L41/meta
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 IOP Publishing
publisher.none.fl_str_mv IOP Publishing
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 13.070432

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