The dual nature of the tidal tails of NGC 5904 (M5)

Autores
Piatti, Andres Eduardo
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The tangential velocity dispersion of stars belonging to the Milky Way globular clus-ter’s tidal tails has recently been found from N-body simulations to be a parameterthat distinguishes between cored and cuspy profiles of low-mass dwarf galaxy darkmatter subhaloes where that globular cluster formed, and the in-situ formation sce-nario. In this context, we discovered that M5’s tidal tails are composed by stars at twodifferent metallicity regimes ([Fe/H] ∼ -1.4 dex and -2.0 dex). The more metal-richtidal tail stars are of the same metal content than M5’s members and have a tangen-tial velocity dispersion that coincides with the predicted value for a cuspy formationscenario (subhalo mass ∼ 10 9 M ). The more metal-poor stars, that are found alongthe entire M5 tidal tails and have similar distributions to their more metal-rich coun-terparts in the M5 colour-magnitude diagram and orbit trajectory, have a tangentialvelocity dispersion that refers to a cored subhalo (mass ∼ 10 9 M ) or an in-situ for-mation scenario. In order to reconcile the dual distribution of M5 tidal tail stars, inkinematics and chemistry, we propose that M5 collided with another more metal-poorand less massive globular cluster anytime before or after it was accreted into the MilkyWay.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
Materia
cluster
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:11336/232537

id CONICETDig_18dad31345a34d1a0718404e39bc0139
oai_identifier_str oai:ri.conicet.gov.ar:11336/232537
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The dual nature of the tidal tails of NGC 5904 (M5)Piatti, Andres Eduardoclusterhttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1The tangential velocity dispersion of stars belonging to the Milky Way globular clus-ter’s tidal tails has recently been found from N-body simulations to be a parameterthat distinguishes between cored and cuspy profiles of low-mass dwarf galaxy darkmatter subhaloes where that globular cluster formed, and the in-situ formation sce-nario. In this context, we discovered that M5’s tidal tails are composed by stars at twodifferent metallicity regimes ([Fe/H] ∼ -1.4 dex and -2.0 dex). The more metal-richtidal tail stars are of the same metal content than M5’s members and have a tangen-tial velocity dispersion that coincides with the predicted value for a cuspy formationscenario (subhalo mass ∼ 10 9 M ). The more metal-poor stars, that are found alongthe entire M5 tidal tails and have similar distributions to their more metal-rich coun-terparts in the M5 colour-magnitude diagram and orbit trajectory, have a tangentialvelocity dispersion that refers to a cored subhalo (mass ∼ 10 9 M ) or an in-situ for-mation scenario. In order to reconcile the dual distribution of M5 tidal tail stars, inkinematics and chemistry, we propose that M5 collided with another more metal-poorand less massive globular cluster anytime before or after it was accreted into the MilkyWay.Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; ArgentinaOxford University Press2023-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/232537Piatti, Andres Eduardo; The dual nature of the tidal tails of NGC 5904 (M5); Oxford University Press; Monthly Notices of the Royal Astronomical Society Letters; 525; 1; 7-2023; 72-751745-3933CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnrasl/article/525/1/L72/7225939info:eu-repo/semantics/altIdentifier/doi/10.1093/mnrasl/slad098info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:19Zoai:ri.conicet.gov.ar:11336/232537instacron: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 10:43:19.483CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The dual nature of the tidal tails of NGC 5904 (M5)
title The dual nature of the tidal tails of NGC 5904 (M5)
spellingShingle The dual nature of the tidal tails of NGC 5904 (M5)
Piatti, Andres Eduardo
cluster
title_short The dual nature of the tidal tails of NGC 5904 (M5)
title_full The dual nature of the tidal tails of NGC 5904 (M5)
title_fullStr The dual nature of the tidal tails of NGC 5904 (M5)
title_full_unstemmed The dual nature of the tidal tails of NGC 5904 (M5)
title_sort The dual nature of the tidal tails of NGC 5904 (M5)
dc.creator.none.fl_str_mv Piatti, Andres Eduardo
author Piatti, Andres Eduardo
author_facet Piatti, Andres Eduardo
author_role author
dc.subject.none.fl_str_mv cluster
topic cluster
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The tangential velocity dispersion of stars belonging to the Milky Way globular clus-ter’s tidal tails has recently been found from N-body simulations to be a parameterthat distinguishes between cored and cuspy profiles of low-mass dwarf galaxy darkmatter subhaloes where that globular cluster formed, and the in-situ formation sce-nario. In this context, we discovered that M5’s tidal tails are composed by stars at twodifferent metallicity regimes ([Fe/H] ∼ -1.4 dex and -2.0 dex). The more metal-richtidal tail stars are of the same metal content than M5’s members and have a tangen-tial velocity dispersion that coincides with the predicted value for a cuspy formationscenario (subhalo mass ∼ 10 9 M ). The more metal-poor stars, that are found alongthe entire M5 tidal tails and have similar distributions to their more metal-rich coun-terparts in the M5 colour-magnitude diagram and orbit trajectory, have a tangentialvelocity dispersion that refers to a cored subhalo (mass ∼ 10 9 M ) or an in-situ for-mation scenario. In order to reconcile the dual distribution of M5 tidal tail stars, inkinematics and chemistry, we propose that M5 collided with another more metal-poorand less massive globular cluster anytime before or after it was accreted into the MilkyWay.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Interdisciplinario de Ciencias Básicas. - Universidad Nacional de Cuyo. Instituto Interdisciplinario de Ciencias Básicas; Argentina
description The tangential velocity dispersion of stars belonging to the Milky Way globular clus-ter’s tidal tails has recently been found from N-body simulations to be a parameterthat distinguishes between cored and cuspy profiles of low-mass dwarf galaxy darkmatter subhaloes where that globular cluster formed, and the in-situ formation sce-nario. In this context, we discovered that M5’s tidal tails are composed by stars at twodifferent metallicity regimes ([Fe/H] ∼ -1.4 dex and -2.0 dex). The more metal-richtidal tail stars are of the same metal content than M5’s members and have a tangen-tial velocity dispersion that coincides with the predicted value for a cuspy formationscenario (subhalo mass ∼ 10 9 M ). The more metal-poor stars, that are found alongthe entire M5 tidal tails and have similar distributions to their more metal-rich coun-terparts in the M5 colour-magnitude diagram and orbit trajectory, have a tangentialvelocity dispersion that refers to a cored subhalo (mass ∼ 10 9 M ) or an in-situ for-mation scenario. In order to reconcile the dual distribution of M5 tidal tail stars, inkinematics and chemistry, we propose that M5 collided with another more metal-poorand less massive globular cluster anytime before or after it was accreted into the MilkyWay.
publishDate 2023
dc.date.none.fl_str_mv 2023-07
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/11336/232537
Piatti, Andres Eduardo; The dual nature of the tidal tails of NGC 5904 (M5); Oxford University Press; Monthly Notices of the Royal Astronomical Society Letters; 525; 1; 7-2023; 72-75
1745-3933
CONICET Digital
CONICET
url http://hdl.handle.net/11336/232537
identifier_str_mv Piatti, Andres Eduardo; The dual nature of the tidal tails of NGC 5904 (M5); Oxford University Press; Monthly Notices of the Royal Astronomical Society Letters; 525; 1; 7-2023; 72-75
1745-3933
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://academic.oup.com/mnrasl/article/525/1/L72/7225939
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnrasl/slad098
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 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
_version_ 1844614467994779648
score 13.070432