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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/180445
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oai:ri.conicet.gov.ar:11336/180445 |
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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 Técnicas2025-09-29T10:18:51Zoai: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:34982025-09-29 10:18:51.714CONICET 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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1844614155077681152 |
score |
13.070432 |