The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae

Autores
Cioni, Maria Rosa L.; Bekki, Kenji; Girardi, Léo; De Grijs, Richard; Irwin, Mike J.; Ivanov, Valentin D.; Marconi, Marcella; Oliveira, Joana M.; Piatti, Andres Eduardo; Ripepi, Vincenzo; Van Loon, Jacco Th.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Aims. In this study we use multi-epoch near-infrared observations from the VISTA survey of the Magellanic Cloud system (VMC) to measure the proper motions of different stellar populations in a tile of 1.5 deg2 in size in the direction of the Galactic globular cluster 47 Tuc. We obtain the proper motion of the cluster itself, of the Small Magellanic Cloud (SMC), and of the field Milky Way stars. Methods. Stars of the three main stellar components are selected according to their spatial distributions and their distributions in colour-magnitude diagrams. Their average coordinate displacement is computed from the difference between multiple Ks-band observations for stars as faint as Ks = 19 mag. Proper motions are derived from the slope of the best-fitting line among ten VMC epochs over a time baseline of ~1 yr. Background galaxies are used to calibrate the absolute astrometric reference frame. Results. The resulting absolute proper motion of 47 Tuc is (μαcos(δ), μδ) = (+7.26 ± 0.03, -1.25 ± 0.03) mas yr-1. This measurement refers to about 35 000 sources distributed between 10′ and 60′ from the cluster centre. For the SMC we obtain (μαcos(δ), μδ) = (+1.16 ± 0.07, -0.81 ± 0.07) mas yr-1 from about 5250 red clump and red giant branch stars. The absolute proper motion of the Milky Way population in the line of sight (l = 305.9, b = -44.9) of this VISTA tile is (μαcos(δ), μδ) = (+10.22 ± 0.14, -1.27 ± 0.12) mas yr-1 and has been calculated from about 4000 sources. Systematic uncertainties associated with the astrometric reference system are 0.18 mas yr-1. Thanks to the proper motion we detect 47 Tuc stars beyond its tidal radius.
Fil: Cioni, Maria Rosa L.. Universitat Potsdam; Alemania. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania. University of Hertfordshire; Reino Unido
Fil: Bekki, Kenji. University of Western Australia; Australia
Fil: Girardi, Léo. Osservatorio Astronomico di Padova; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: De Grijs, Richard. Peking University; China
Fil: Irwin, Mike J.. University of Cambridge; Reino Unido
Fil: Ivanov, Valentin D.. European Southern Observatory; Alemania. European Southern Observatory Chile; Chile
Fil: Marconi, Marcella. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: Oliveira, Joana M.. Keele University; Reino Unido
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Ripepi, Vincenzo. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: Van Loon, Jacco Th.. Keele University; Reino Unido
Materia
GLOBULAR CLUSTERS: INDIVIDUAL: 47 TUCANAE
MAGELLANIC CLOUDS
PROPER MOTIONS
SURVEYS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/180445
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/180445
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 TucanaeCioni, Maria Rosa L.Bekki, KenjiGirardi, LéoDe Grijs, RichardIrwin, Mike J.Ivanov, Valentin D.Marconi, MarcellaOliveira, Joana M.Piatti, Andres EduardoRipepi, VincenzoVan Loon, Jacco Th.GLOBULAR CLUSTERS: INDIVIDUAL: 47 TUCANAEMAGELLANIC CLOUDSPROPER MOTIONSSURVEYShttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1Aims. In this study we use multi-epoch near-infrared observations from the VISTA survey of the Magellanic Cloud system (VMC) to measure the proper motions of different stellar populations in a tile of 1.5 deg2 in size in the direction of the Galactic globular cluster 47 Tuc. We obtain the proper motion of the cluster itself, of the Small Magellanic Cloud (SMC), and of the field Milky Way stars. Methods. Stars of the three main stellar components are selected according to their spatial distributions and their distributions in colour-magnitude diagrams. Their average coordinate displacement is computed from the difference between multiple Ks-band observations for stars as faint as Ks = 19 mag. Proper motions are derived from the slope of the best-fitting line among ten VMC epochs over a time baseline of ~1 yr. Background galaxies are used to calibrate the absolute astrometric reference frame. Results. The resulting absolute proper motion of 47 Tuc is (μαcos(δ), μδ) = (+7.26 ± 0.03, -1.25 ± 0.03) mas yr-1. This measurement refers to about 35 000 sources distributed between 10′ and 60′ from the cluster centre. For the SMC we obtain (μαcos(δ), μδ) = (+1.16 ± 0.07, -0.81 ± 0.07) mas yr-1 from about 5250 red clump and red giant branch stars. The absolute proper motion of the Milky Way population in the line of sight (l = 305.9, b = -44.9) of this VISTA tile is (μαcos(δ), μδ) = (+10.22 ± 0.14, -1.27 ± 0.12) mas yr-1 and has been calculated from about 4000 sources. Systematic uncertainties associated with the astrometric reference system are 0.18 mas yr-1. Thanks to the proper motion we detect 47 Tuc stars beyond its tidal radius.Fil: Cioni, Maria Rosa L.. Universitat Potsdam; Alemania. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania. University of Hertfordshire; Reino UnidoFil: Bekki, Kenji. University of Western Australia; AustraliaFil: Girardi, Léo. Osservatorio Astronomico di Padova; Italia. Istituto Nazionale di Astrofisica; ItaliaFil: De Grijs, Richard. Peking University; ChinaFil: Irwin, Mike J.. University of Cambridge; Reino UnidoFil: Ivanov, Valentin D.. European Southern Observatory; Alemania. European Southern Observatory Chile; ChileFil: Marconi, Marcella. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; ItaliaFil: Oliveira, Joana M.. Keele University; Reino UnidoFil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Ripepi, Vincenzo. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; ItaliaFil: Van Loon, Jacco Th.. Keele University; Reino UnidoEDP Sciences2016-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/180445Cioni, Maria Rosa L.; Bekki, Kenji; Girardi, Léo; De Grijs, Richard; Irwin, Mike J.; et al.; The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae; EDP Sciences; Astronomy and Astrophysics; 586; 77; 2-2016; 1-160004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2016/02/aa27004-15/aa27004-15.htmlinfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201527004info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1510.07647info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:51:35Zoai:ri.conicet.gov.ar:11336/180445instacron: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 11:51:35.756CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
title The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
spellingShingle The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
Cioni, Maria Rosa L.
GLOBULAR CLUSTERS: INDIVIDUAL: 47 TUCANAE
MAGELLANIC CLOUDS
PROPER MOTIONS
SURVEYS
title_short The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
title_full The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
title_fullStr The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
title_full_unstemmed The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
title_sort The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae
dc.creator.none.fl_str_mv Cioni, Maria Rosa L.
Bekki, Kenji
Girardi, Léo
De Grijs, Richard
Irwin, Mike J.
Ivanov, Valentin D.
Marconi, Marcella
Oliveira, Joana M.
Piatti, Andres Eduardo
Ripepi, Vincenzo
Van Loon, Jacco Th.
author Cioni, Maria Rosa L.
author_facet Cioni, Maria Rosa L.
Bekki, Kenji
Girardi, Léo
De Grijs, Richard
Irwin, Mike J.
Ivanov, Valentin D.
Marconi, Marcella
Oliveira, Joana M.
Piatti, Andres Eduardo
Ripepi, Vincenzo
Van Loon, Jacco Th.
author_role author
author2 Bekki, Kenji
Girardi, Léo
De Grijs, Richard
Irwin, Mike J.
Ivanov, Valentin D.
Marconi, Marcella
Oliveira, Joana M.
Piatti, Andres Eduardo
Ripepi, Vincenzo
Van Loon, Jacco Th.
author2_role author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv GLOBULAR CLUSTERS: INDIVIDUAL: 47 TUCANAE
MAGELLANIC CLOUDS
PROPER MOTIONS
SURVEYS
topic GLOBULAR CLUSTERS: INDIVIDUAL: 47 TUCANAE
MAGELLANIC CLOUDS
PROPER MOTIONS
SURVEYS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Aims. In this study we use multi-epoch near-infrared observations from the VISTA survey of the Magellanic Cloud system (VMC) to measure the proper motions of different stellar populations in a tile of 1.5 deg2 in size in the direction of the Galactic globular cluster 47 Tuc. We obtain the proper motion of the cluster itself, of the Small Magellanic Cloud (SMC), and of the field Milky Way stars. Methods. Stars of the three main stellar components are selected according to their spatial distributions and their distributions in colour-magnitude diagrams. Their average coordinate displacement is computed from the difference between multiple Ks-band observations for stars as faint as Ks = 19 mag. Proper motions are derived from the slope of the best-fitting line among ten VMC epochs over a time baseline of ~1 yr. Background galaxies are used to calibrate the absolute astrometric reference frame. Results. The resulting absolute proper motion of 47 Tuc is (μαcos(δ), μδ) = (+7.26 ± 0.03, -1.25 ± 0.03) mas yr-1. This measurement refers to about 35 000 sources distributed between 10′ and 60′ from the cluster centre. For the SMC we obtain (μαcos(δ), μδ) = (+1.16 ± 0.07, -0.81 ± 0.07) mas yr-1 from about 5250 red clump and red giant branch stars. The absolute proper motion of the Milky Way population in the line of sight (l = 305.9, b = -44.9) of this VISTA tile is (μαcos(δ), μδ) = (+10.22 ± 0.14, -1.27 ± 0.12) mas yr-1 and has been calculated from about 4000 sources. Systematic uncertainties associated with the astrometric reference system are 0.18 mas yr-1. Thanks to the proper motion we detect 47 Tuc stars beyond its tidal radius.
Fil: Cioni, Maria Rosa L.. Universitat Potsdam; Alemania. Gobierno de la República Federal de Alemania. Max Planck Institut für Astrophysik; Alemania. University of Hertfordshire; Reino Unido
Fil: Bekki, Kenji. University of Western Australia; Australia
Fil: Girardi, Léo. Osservatorio Astronomico di Padova; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: De Grijs, Richard. Peking University; China
Fil: Irwin, Mike J.. University of Cambridge; Reino Unido
Fil: Ivanov, Valentin D.. European Southern Observatory; Alemania. European Southern Observatory Chile; Chile
Fil: Marconi, Marcella. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: Oliveira, Joana M.. Keele University; Reino Unido
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Ripepi, Vincenzo. Osservatorio Astronomico di Capodimonte; Italia. Istituto Nazionale di Astrofisica; Italia
Fil: Van Loon, Jacco Th.. Keele University; Reino Unido
description Aims. In this study we use multi-epoch near-infrared observations from the VISTA survey of the Magellanic Cloud system (VMC) to measure the proper motions of different stellar populations in a tile of 1.5 deg2 in size in the direction of the Galactic globular cluster 47 Tuc. We obtain the proper motion of the cluster itself, of the Small Magellanic Cloud (SMC), and of the field Milky Way stars. Methods. Stars of the three main stellar components are selected according to their spatial distributions and their distributions in colour-magnitude diagrams. Their average coordinate displacement is computed from the difference between multiple Ks-band observations for stars as faint as Ks = 19 mag. Proper motions are derived from the slope of the best-fitting line among ten VMC epochs over a time baseline of ~1 yr. Background galaxies are used to calibrate the absolute astrometric reference frame. Results. The resulting absolute proper motion of 47 Tuc is (μαcos(δ), μδ) = (+7.26 ± 0.03, -1.25 ± 0.03) mas yr-1. This measurement refers to about 35 000 sources distributed between 10′ and 60′ from the cluster centre. For the SMC we obtain (μαcos(δ), μδ) = (+1.16 ± 0.07, -0.81 ± 0.07) mas yr-1 from about 5250 red clump and red giant branch stars. The absolute proper motion of the Milky Way population in the line of sight (l = 305.9, b = -44.9) of this VISTA tile is (μαcos(δ), μδ) = (+10.22 ± 0.14, -1.27 ± 0.12) mas yr-1 and has been calculated from about 4000 sources. Systematic uncertainties associated with the astrometric reference system are 0.18 mas yr-1. Thanks to the proper motion we detect 47 Tuc stars beyond its tidal radius.
publishDate 2016
dc.date.none.fl_str_mv 2016-02
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/11336/180445
Cioni, Maria Rosa L.; Bekki, Kenji; Girardi, Léo; De Grijs, Richard; Irwin, Mike J.; et al.; The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae; EDP Sciences; Astronomy and Astrophysics; 586; 77; 2-2016; 1-16
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/180445
identifier_str_mv Cioni, Maria Rosa L.; Bekki, Kenji; Girardi, Léo; De Grijs, Richard; Irwin, Mike J.; et al.; The VMC survey - XVII: The proper motion of the Small Magellanic Cloud and of the Milky Way globular cluster 47 Tucanae; EDP Sciences; Astronomy and Astrophysics; 586; 77; 2-2016; 1-16
0004-6361
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://www.aanda.org/articles/aa/abs/2016/02/aa27004-15/aa27004-15.html
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201527004
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1510.07647
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
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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