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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/37434
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3498 |
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CONICET Digital (CONICET) |
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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 Técnicas2025-09-29T10:26:06Zoai: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:34982025-09-29 10:26:06.243CONICET 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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1844614261207203840 |
score |
13.070432 |