Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages

Autores
Piatti, Andres Eduardo; Angelo, Mateus S.; Dias, Wilton S.
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report astrophysical properties of 12 Milky Way open clusters located beyond a 2 kpc circle around the Sun by using deep optical photometry. We estimated their age and metallicities on the basis of a maximum likelihood approach using astrometric members determined from Gaia DR2 data. The studied clusters turned out to be of intermediate-age (0.8-4.0 Gyr), with metallicities spanning the range [Fe/H] ∼ −0.5-+0.1 dex, and distributed within the general observed trend of the Milky Way disc radial and perpendicular metallicity gradients. As far as we are aware, these are the first metal abundance estimates derived for these clusters so far. From the constructed stellar density radial profiles and cluster mass functions we obtained a variety of structural and internal dynamics evolution parameters. They show that while the innermost cluster regions would seem to be mainly shaped according to the respective internal dynamics evolutionary stages, the outermost ones would seem to be slightly more sensitive to the Milky Way tidal field. The nearly coeval studied clusters are experiencing different levels of two-body relaxation following star evaporation; those at more advanced stages being more compact objects. Likewise, we found that the more important the Milky way tides, the larger the Jacobi volume occupied by the clusters, irrespective of their actual sizes and internal dynamics evolutionary stages.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Angelo, Mateus S.. Centro Federal de Educacao Tecnologica de Minas Gerais; Brasil
Fil: Dias, Wilton S.. Universidade Federal de Itajuba; Brasil
Materia
ASSOCIATIONS: GENERAL
OPEN CLUSTERS
TECHNIQUES: PHOTOMETRIC
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:11336/128033
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/128033
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stagesPiatti, Andres EduardoAngelo, Mateus S.Dias, Wilton S.ASSOCIATIONS: GENERALOPEN CLUSTERSTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We report astrophysical properties of 12 Milky Way open clusters located beyond a 2 kpc circle around the Sun by using deep optical photometry. We estimated their age and metallicities on the basis of a maximum likelihood approach using astrometric members determined from Gaia DR2 data. The studied clusters turned out to be of intermediate-age (0.8-4.0 Gyr), with metallicities spanning the range [Fe/H] ∼ −0.5-+0.1 dex, and distributed within the general observed trend of the Milky Way disc radial and perpendicular metallicity gradients. As far as we are aware, these are the first metal abundance estimates derived for these clusters so far. From the constructed stellar density radial profiles and cluster mass functions we obtained a variety of structural and internal dynamics evolution parameters. They show that while the innermost cluster regions would seem to be mainly shaped according to the respective internal dynamics evolutionary stages, the outermost ones would seem to be slightly more sensitive to the Milky Way tidal field. The nearly coeval studied clusters are experiencing different levels of two-body relaxation following star evaporation; those at more advanced stages being more compact objects. Likewise, we found that the more important the Milky way tides, the larger the Jacobi volume occupied by the clusters, irrespective of their actual sizes and internal dynamics evolutionary stages.Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Angelo, Mateus S.. Centro Federal de Educacao Tecnologica de Minas Gerais; BrasilFil: Dias, Wilton S.. Universidade Federal de Itajuba; BrasilWiley Blackwell Publishing, Inc2019-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/128033Piatti, Andres Eduardo; Angelo, Mateus S.; Dias, Wilton S.; Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 488; 4; 7-2019; 4648-46620035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/arxiv/https://arxiv.org/abs/1907.10377info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz2050info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:46:31Zoai:ri.conicet.gov.ar:11336/128033instacron: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 09:46:31.84CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages
title Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages
spellingShingle Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages
Piatti, Andres Eduardo
ASSOCIATIONS: GENERAL
OPEN CLUSTERS
TECHNIQUES: PHOTOMETRIC
title_short Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages
title_full Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages
title_fullStr Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages
title_full_unstemmed Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages
title_sort Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages
dc.creator.none.fl_str_mv Piatti, Andres Eduardo
Angelo, Mateus S.
Dias, Wilton S.
author Piatti, Andres Eduardo
author_facet Piatti, Andres Eduardo
Angelo, Mateus S.
Dias, Wilton S.
author_role author
author2 Angelo, Mateus S.
Dias, Wilton S.
author2_role author
author
dc.subject.none.fl_str_mv ASSOCIATIONS: GENERAL
OPEN CLUSTERS
TECHNIQUES: PHOTOMETRIC
topic ASSOCIATIONS: GENERAL
OPEN CLUSTERS
TECHNIQUES: PHOTOMETRIC
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 astrophysical properties of 12 Milky Way open clusters located beyond a 2 kpc circle around the Sun by using deep optical photometry. We estimated their age and metallicities on the basis of a maximum likelihood approach using astrometric members determined from Gaia DR2 data. The studied clusters turned out to be of intermediate-age (0.8-4.0 Gyr), with metallicities spanning the range [Fe/H] ∼ −0.5-+0.1 dex, and distributed within the general observed trend of the Milky Way disc radial and perpendicular metallicity gradients. As far as we are aware, these are the first metal abundance estimates derived for these clusters so far. From the constructed stellar density radial profiles and cluster mass functions we obtained a variety of structural and internal dynamics evolution parameters. They show that while the innermost cluster regions would seem to be mainly shaped according to the respective internal dynamics evolutionary stages, the outermost ones would seem to be slightly more sensitive to the Milky Way tidal field. The nearly coeval studied clusters are experiencing different levels of two-body relaxation following star evaporation; those at more advanced stages being more compact objects. Likewise, we found that the more important the Milky way tides, the larger the Jacobi volume occupied by the clusters, irrespective of their actual sizes and internal dynamics evolutionary stages.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Angelo, Mateus S.. Centro Federal de Educacao Tecnologica de Minas Gerais; Brasil
Fil: Dias, Wilton S.. Universidade Federal de Itajuba; Brasil
description We report astrophysical properties of 12 Milky Way open clusters located beyond a 2 kpc circle around the Sun by using deep optical photometry. We estimated their age and metallicities on the basis of a maximum likelihood approach using astrometric members determined from Gaia DR2 data. The studied clusters turned out to be of intermediate-age (0.8-4.0 Gyr), with metallicities spanning the range [Fe/H] ∼ −0.5-+0.1 dex, and distributed within the general observed trend of the Milky Way disc radial and perpendicular metallicity gradients. As far as we are aware, these are the first metal abundance estimates derived for these clusters so far. From the constructed stellar density radial profiles and cluster mass functions we obtained a variety of structural and internal dynamics evolution parameters. They show that while the innermost cluster regions would seem to be mainly shaped according to the respective internal dynamics evolutionary stages, the outermost ones would seem to be slightly more sensitive to the Milky Way tidal field. The nearly coeval studied clusters are experiencing different levels of two-body relaxation following star evaporation; those at more advanced stages being more compact objects. Likewise, we found that the more important the Milky way tides, the larger the Jacobi volume occupied by the clusters, irrespective of their actual sizes and internal dynamics evolutionary stages.
publishDate 2019
dc.date.none.fl_str_mv 2019-07
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/11336/128033
Piatti, Andres Eduardo; Angelo, Mateus S.; Dias, Wilton S.; Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 488; 4; 7-2019; 4648-4662
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/128033
identifier_str_mv Piatti, Andres Eduardo; Angelo, Mateus S.; Dias, Wilton S.; Nearly coeval intermediate-age Milky Way star clusters at very different dynamics evolutionary stages; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 488; 4; 7-2019; 4648-4662
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/arxiv/https://arxiv.org/abs/1907.10377
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz2050
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 13.070432

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