The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae

Autores
Li, Chengyuan; De Grijs, Richard; Deng, Licai; Rubele, Stefano; Wang, Chuchu; Bekki, Kenji; Cioni, Maria Rosa L.; Clementini, Gisella; Emerson, Jim; For, Bi Qing; Girardi, Leo; Groenewegen, Martin A. T.; Guandalini, Roald; Gullieuszik, Marco; Marconi, Marcella; Piatti, Andres Eduardo; Ripepi, Vincenzo; Van Loon, Jacco Th.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a deep near-infrared color-magnitude diagram of the Galactic globular cluster 47 Tucanae, obtained with the Visible and Infrared Survey Telescope for Astronomy (VISTA) as part of the VISTA near-infrared Y, J, K s survey of the Magellanic System (VMC). The cluster stars comprising both the subgiant and red giant branches exhibit apparent, continuous variations in color-magnitude space as a function of radius. Subgiant branch stars at larger radii are systematically brighter than their counterparts closer to the cluster core; similarly, red-giant-branch stars in the cluster's periphery are bluer than their more centrally located cousins. The observations can very well be described by adopting an age spread of 0.5 Gyr as well as radial gradients in both the cluster's helium abundance (Y) and metallicity (Z), which change gradually from (Y = 0.28, Z = 0.005) in the cluster core to (Y = 0.25, Z = 0.003) in its periphery. We conclude that the cluster's inner regions host a significant fraction of second-generation stars, which decreases with increasing radius; the stellar population in the 47 Tuc periphery is well approximated by a simple stellar population.
Fil: Li, Chengyuan. Peking University; China. National Astronomical Observatories Chinese Academy Of Sciences; China
Fil: De Grijs, Richard. Peking University; China
Fil: Deng, Licai. National Astronomical Observatories Chinese Academy Of Sciences; China
Fil: Rubele, Stefano. Osservatorio Astronomico Di Padova; Italia
Fil: Wang, Chuchu. Peking University; China
Fil: Bekki, Kenji. University of Western Australia; Australia
Fil: Cioni, Maria Rosa L.. University Of Hertfordshire; Reino Unido. Astrophysikalisches Institut Potsdam; Alemania
Fil: Clementini, Gisella. Osservatorio Astronomico Di Bologna; Italia
Fil: Emerson, Jim. University of London; Reino Unido
Fil: For, Bi Qing. University of Western Australia; Australia
Fil: Girardi, Leo. Osservatorio Astronomico Di Padova; Italia
Fil: Groenewegen, Martin A. T.. Royal Observatory Of Belgium; Bélgica
Fil: Guandalini, Roald. Katholikie Universiteit Leuven; Bélgica
Fil: Gullieuszik, Marco. Osservatorio Astronomico Di Padova; Italia
Fil: Marconi, Marcella. Osservatorio Astronomico Di Capodimonte; Italia
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina
Fil: Ripepi, Vincenzo. Osservatorio Astronomico Di Capodimonte; Italia
Fil: Van Loon, Jacco Th.. Keele University; Reino Unido
Materia
GLOBULAR CLUSTERS: INDIVIDUAL (47 TUC, NGC 104)
HERTZSPRUNG-RUSSELL AND C-M DIAGRAMS
INFRARED: STARS
STARS: POPULATION II
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:11336/37434
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/37434
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 TucanaeLi, ChengyuanDe Grijs, RichardDeng, LicaiRubele, StefanoWang, ChuchuBekki, KenjiCioni, Maria Rosa L.Clementini, GisellaEmerson, JimFor, Bi QingGirardi, LeoGroenewegen, Martin A. T.Guandalini, RoaldGullieuszik, MarcoMarconi, MarcellaPiatti, Andres EduardoRipepi, VincenzoVan Loon, Jacco Th.GLOBULAR CLUSTERS: INDIVIDUAL (47 TUC, NGC 104)HERTZSPRUNG-RUSSELL AND C-M DIAGRAMSINFRARED: STARSSTARS: POPULATION IIhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a deep near-infrared color-magnitude diagram of the Galactic globular cluster 47 Tucanae, obtained with the Visible and Infrared Survey Telescope for Astronomy (VISTA) as part of the VISTA near-infrared Y, J, K s survey of the Magellanic System (VMC). The cluster stars comprising both the subgiant and red giant branches exhibit apparent, continuous variations in color-magnitude space as a function of radius. Subgiant branch stars at larger radii are systematically brighter than their counterparts closer to the cluster core; similarly, red-giant-branch stars in the cluster's periphery are bluer than their more centrally located cousins. The observations can very well be described by adopting an age spread of 0.5 Gyr as well as radial gradients in both the cluster's helium abundance (Y) and metallicity (Z), which change gradually from (Y = 0.28, Z = 0.005) in the cluster core to (Y = 0.25, Z = 0.003) in its periphery. We conclude that the cluster's inner regions host a significant fraction of second-generation stars, which decreases with increasing radius; the stellar population in the 47 Tuc periphery is well approximated by a simple stellar population.Fil: Li, Chengyuan. Peking University; China. National Astronomical Observatories Chinese Academy Of Sciences; ChinaFil: De Grijs, Richard. Peking University; ChinaFil: Deng, Licai. National Astronomical Observatories Chinese Academy Of Sciences; ChinaFil: Rubele, Stefano. Osservatorio Astronomico Di Padova; ItaliaFil: Wang, Chuchu. Peking University; ChinaFil: Bekki, Kenji. University of Western Australia; AustraliaFil: Cioni, Maria Rosa L.. University Of Hertfordshire; Reino Unido. Astrophysikalisches Institut Potsdam; AlemaniaFil: Clementini, Gisella. Osservatorio Astronomico Di Bologna; ItaliaFil: Emerson, Jim. University of London; Reino UnidoFil: For, Bi Qing. University of Western Australia; AustraliaFil: Girardi, Leo. Osservatorio Astronomico Di Padova; ItaliaFil: Groenewegen, Martin A. T.. Royal Observatory Of Belgium; BélgicaFil: Guandalini, Roald. Katholikie Universiteit Leuven; BélgicaFil: Gullieuszik, Marco. Osservatorio Astronomico Di Padova; ItaliaFil: Marconi, Marcella. Osservatorio Astronomico Di Capodimonte; ItaliaFil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; ArgentinaFil: Ripepi, Vincenzo. Osservatorio Astronomico Di Capodimonte; ItaliaFil: Van Loon, Jacco Th.. Keele University; Reino UnidoIOP Publishing2014-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37434Li, Chengyuan; De Grijs, Richard; Deng, Licai; Rubele, Stefano; Wang, Chuchu; et al.; The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae; IOP Publishing; Astrophysical Journal; 790; 1; 7-2014; 1-14; 350004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/790/1/35info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/790/1/35info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1406.1259info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:58:46Zoai:ri.conicet.gov.ar:11336/37434instacron: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 11:58:46.533CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae
title The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae
spellingShingle The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae
Li, Chengyuan
GLOBULAR CLUSTERS: INDIVIDUAL (47 TUC, NGC 104)
HERTZSPRUNG-RUSSELL AND C-M DIAGRAMS
INFRARED: STARS
STARS: POPULATION II
title_short The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae
title_full The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae
title_fullStr The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae
title_full_unstemmed The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae
title_sort The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae
dc.creator.none.fl_str_mv Li, Chengyuan
De Grijs, Richard
Deng, Licai
Rubele, Stefano
Wang, Chuchu
Bekki, Kenji
Cioni, Maria Rosa L.
Clementini, Gisella
Emerson, Jim
For, Bi Qing
Girardi, Leo
Groenewegen, Martin A. T.
Guandalini, Roald
Gullieuszik, Marco
Marconi, Marcella
Piatti, Andres Eduardo
Ripepi, Vincenzo
Van Loon, Jacco Th.
author Li, Chengyuan
author_facet Li, Chengyuan
De Grijs, Richard
Deng, Licai
Rubele, Stefano
Wang, Chuchu
Bekki, Kenji
Cioni, Maria Rosa L.
Clementini, Gisella
Emerson, Jim
For, Bi Qing
Girardi, Leo
Groenewegen, Martin A. T.
Guandalini, Roald
Gullieuszik, Marco
Marconi, Marcella
Piatti, Andres Eduardo
Ripepi, Vincenzo
Van Loon, Jacco Th.
author_role author
author2 De Grijs, Richard
Deng, Licai
Rubele, Stefano
Wang, Chuchu
Bekki, Kenji
Cioni, Maria Rosa L.
Clementini, Gisella
Emerson, Jim
For, Bi Qing
Girardi, Leo
Groenewegen, Martin A. T.
Guandalini, Roald
Gullieuszik, Marco
Marconi, Marcella
Piatti, Andres Eduardo
Ripepi, Vincenzo
Van Loon, Jacco Th.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv GLOBULAR CLUSTERS: INDIVIDUAL (47 TUC, NGC 104)
HERTZSPRUNG-RUSSELL AND C-M DIAGRAMS
INFRARED: STARS
STARS: POPULATION II
topic GLOBULAR CLUSTERS: INDIVIDUAL (47 TUC, NGC 104)
HERTZSPRUNG-RUSSELL AND C-M DIAGRAMS
INFRARED: STARS
STARS: POPULATION II
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present a deep near-infrared color-magnitude diagram of the Galactic globular cluster 47 Tucanae, obtained with the Visible and Infrared Survey Telescope for Astronomy (VISTA) as part of the VISTA near-infrared Y, J, K s survey of the Magellanic System (VMC). The cluster stars comprising both the subgiant and red giant branches exhibit apparent, continuous variations in color-magnitude space as a function of radius. Subgiant branch stars at larger radii are systematically brighter than their counterparts closer to the cluster core; similarly, red-giant-branch stars in the cluster's periphery are bluer than their more centrally located cousins. The observations can very well be described by adopting an age spread of 0.5 Gyr as well as radial gradients in both the cluster's helium abundance (Y) and metallicity (Z), which change gradually from (Y = 0.28, Z = 0.005) in the cluster core to (Y = 0.25, Z = 0.003) in its periphery. We conclude that the cluster's inner regions host a significant fraction of second-generation stars, which decreases with increasing radius; the stellar population in the 47 Tuc periphery is well approximated by a simple stellar population.
Fil: Li, Chengyuan. Peking University; China. National Astronomical Observatories Chinese Academy Of Sciences; China
Fil: De Grijs, Richard. Peking University; China
Fil: Deng, Licai. National Astronomical Observatories Chinese Academy Of Sciences; China
Fil: Rubele, Stefano. Osservatorio Astronomico Di Padova; Italia
Fil: Wang, Chuchu. Peking University; China
Fil: Bekki, Kenji. University of Western Australia; Australia
Fil: Cioni, Maria Rosa L.. University Of Hertfordshire; Reino Unido. Astrophysikalisches Institut Potsdam; Alemania
Fil: Clementini, Gisella. Osservatorio Astronomico Di Bologna; Italia
Fil: Emerson, Jim. University of London; Reino Unido
Fil: For, Bi Qing. University of Western Australia; Australia
Fil: Girardi, Leo. Osservatorio Astronomico Di Padova; Italia
Fil: Groenewegen, Martin A. T.. Royal Observatory Of Belgium; Bélgica
Fil: Guandalini, Roald. Katholikie Universiteit Leuven; Bélgica
Fil: Gullieuszik, Marco. Osservatorio Astronomico Di Padova; Italia
Fil: Marconi, Marcella. Osservatorio Astronomico Di Capodimonte; Italia
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina
Fil: Ripepi, Vincenzo. Osservatorio Astronomico Di Capodimonte; Italia
Fil: Van Loon, Jacco Th.. Keele University; Reino Unido
description We present a deep near-infrared color-magnitude diagram of the Galactic globular cluster 47 Tucanae, obtained with the Visible and Infrared Survey Telescope for Astronomy (VISTA) as part of the VISTA near-infrared Y, J, K s survey of the Magellanic System (VMC). The cluster stars comprising both the subgiant and red giant branches exhibit apparent, continuous variations in color-magnitude space as a function of radius. Subgiant branch stars at larger radii are systematically brighter than their counterparts closer to the cluster core; similarly, red-giant-branch stars in the cluster's periphery are bluer than their more centrally located cousins. The observations can very well be described by adopting an age spread of 0.5 Gyr as well as radial gradients in both the cluster's helium abundance (Y) and metallicity (Z), which change gradually from (Y = 0.28, Z = 0.005) in the cluster core to (Y = 0.25, Z = 0.003) in its periphery. We conclude that the cluster's inner regions host a significant fraction of second-generation stars, which decreases with increasing radius; the stellar population in the 47 Tuc periphery is well approximated by a simple stellar population.
publishDate 2014
dc.date.none.fl_str_mv 2014-07
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/11336/37434
Li, Chengyuan; De Grijs, Richard; Deng, Licai; Rubele, Stefano; Wang, Chuchu; et al.; The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae; IOP Publishing; Astrophysical Journal; 790; 1; 7-2014; 1-14; 35
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37434
identifier_str_mv Li, Chengyuan; De Grijs, Richard; Deng, Licai; Rubele, Stefano; Wang, Chuchu; et al.; The VMC survey. XI. Radial stellar population gradients in the galactic globular cluster 47 Tucanae; IOP Publishing; Astrophysical Journal; 790; 1; 7-2014; 1-14; 35
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/10.1088/0004-637X/790/1/35
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/790/1/35
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1406.1259
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 12.982451

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