Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud

Autores
Piatti, Andres Eduardo; Alfaro Navarro, Emilio Javier; Cantat-Gaudin, Tristan
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report results of proper motions of 15 known Large Magellanic Cloud (LMC) oldglobular clusters (GCs) derived from the Gaia DR2 data sets. When these mean propermotions are gathered with existent radial velocity measurements to compose the GCs´ velocity vectors, we found that the projection of the velocity vectors onto the LMC plane and those perpendicular to it tell us about two distinct kinematic GCpopulations. Such a distinction becomes clear if the GCs are split at a perpendicularvelocity of 10 km/s (absolute value). The two different kinematic groups also exhibitdifferent spatial distributions. Those with smaller vertical velocities are part of theLMC disc, while those with larger values are closely distributed like a sphericalcomponent. Since GCs in both kinematic-structural components share similar ages andmetallicities, we speculate with the possibility that their origins could have occurredthrough a fast collapse that formed halo and disc concurrently.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Alfaro Navarro, Emilio Javier. Instituto de Astrofísica de Andalucía; España
Fil: Cantat-Gaudin, Tristan. Universidad de Barcelona; España
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:11336/112332
Acceder
id CONICETDig_fc84eb25fc8a0a074cee899201ef5ed2
oai_identifier_str oai:ri.conicet.gov.ar:11336/112332
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Two kinematically distinct old globular cluster populations in the Large Magellanic CloudPiatti, Andres EduardoAlfaro Navarro, Emilio JavierCantat-Gaudin, Tristanclusterhttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We report results of proper motions of 15 known Large Magellanic Cloud (LMC) oldglobular clusters (GCs) derived from the Gaia DR2 data sets. When these mean propermotions are gathered with existent radial velocity measurements to compose the GCs´ velocity vectors, we found that the projection of the velocity vectors onto the LMC plane and those perpendicular to it tell us about two distinct kinematic GCpopulations. Such a distinction becomes clear if the GCs are split at a perpendicularvelocity of 10 km/s (absolute value). The two different kinematic groups also exhibitdifferent spatial distributions. Those with smaller vertical velocities are part of theLMC disc, while those with larger values are closely distributed like a sphericalcomponent. Since GCs in both kinematic-structural components share similar ages andmetallicities, we speculate with the possibility that their origins could have occurredthrough a fast collapse that formed halo and disc concurrently.Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Alfaro Navarro, Emilio Javier. Instituto de Astrofísica de Andalucía; EspañaFil: Cantat-Gaudin, Tristan. Universidad de Barcelona; EspañaWiley Blackwell Publishing, Inc2019-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/112332Piatti, Andres Eduardo; Alfaro Navarro, Emilio Javier; Cantat-Gaudin, Tristan; Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 484; 1; 3-2019; L19-L230035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnrasl/article-abstract/484/1/L19/5266395?redirectedFrom=fulltextinfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnrasl/sly240info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:04:17Zoai:ri.conicet.gov.ar:11336/112332instacron: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:34982025-10-22 12:04:17.392CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
title Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
spellingShingle Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
Piatti, Andres Eduardo
cluster
title_short Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
title_full Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
title_fullStr Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
title_full_unstemmed Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
title_sort Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud
dc.creator.none.fl_str_mv Piatti, Andres Eduardo
Alfaro Navarro, Emilio Javier
Cantat-Gaudin, Tristan
author Piatti, Andres Eduardo
author_facet Piatti, Andres Eduardo
Alfaro Navarro, Emilio Javier
Cantat-Gaudin, Tristan
author_role author
author2 Alfaro Navarro, Emilio Javier
Cantat-Gaudin, Tristan
author2_role author
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 We report results of proper motions of 15 known Large Magellanic Cloud (LMC) oldglobular clusters (GCs) derived from the Gaia DR2 data sets. When these mean propermotions are gathered with existent radial velocity measurements to compose the GCs´ velocity vectors, we found that the projection of the velocity vectors onto the LMC plane and those perpendicular to it tell us about two distinct kinematic GCpopulations. Such a distinction becomes clear if the GCs are split at a perpendicularvelocity of 10 km/s (absolute value). The two different kinematic groups also exhibitdifferent spatial distributions. Those with smaller vertical velocities are part of theLMC disc, while those with larger values are closely distributed like a sphericalcomponent. Since GCs in both kinematic-structural components share similar ages andmetallicities, we speculate with the possibility that their origins could have occurredthrough a fast collapse that formed halo and disc concurrently.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Alfaro Navarro, Emilio Javier. Instituto de Astrofísica de Andalucía; España
Fil: Cantat-Gaudin, Tristan. Universidad de Barcelona; España
description We report results of proper motions of 15 known Large Magellanic Cloud (LMC) oldglobular clusters (GCs) derived from the Gaia DR2 data sets. When these mean propermotions are gathered with existent radial velocity measurements to compose the GCs´ velocity vectors, we found that the projection of the velocity vectors onto the LMC plane and those perpendicular to it tell us about two distinct kinematic GCpopulations. Such a distinction becomes clear if the GCs are split at a perpendicularvelocity of 10 km/s (absolute value). The two different kinematic groups also exhibitdifferent spatial distributions. Those with smaller vertical velocities are part of theLMC disc, while those with larger values are closely distributed like a sphericalcomponent. Since GCs in both kinematic-structural components share similar ages andmetallicities, we speculate with the possibility that their origins could have occurredthrough a fast collapse that formed halo and disc concurrently.
publishDate 2019
dc.date.none.fl_str_mv 2019-03
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/11336/112332
Piatti, Andres Eduardo; Alfaro Navarro, Emilio Javier; Cantat-Gaudin, Tristan; Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 484; 1; 3-2019; L19-L23
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/112332
identifier_str_mv Piatti, Andres Eduardo; Alfaro Navarro, Emilio Javier; Cantat-Gaudin, Tristan; Two kinematically distinct old globular cluster populations in the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 484; 1; 3-2019; L19-L23
0035-8711
1365-2966
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-abstract/484/1/L19/5266395?redirectedFrom=fulltext
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnrasl/sly240
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
_version_ 1846782390125461504
score 12.982451

Publicaciones similares