A likely runaway star cluster in the outer disc of the Large Magellanic Cloud
- Autores
- Piatti, Andres Eduardo; Salinas, Ricardo; Grebel, Eva K.
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present results from photometric and spectroscopic data obtained with SOAR and Gemini observatory facilities in the field of a recently discovered star cluster. The cluster, projected towards the Eastern side of the outer disc of the Large Magellanic Cloud (LMC),was originally placed nearly 10 kpc behind the LMC with an age and metallicity typical of the innermost LMC star cluster population.We assigned radial velocity (RV) memberships to stars observed spectroscopically, and derived the cluster age and distance from theoretical isochrone fitting to the cluster colour-magnitude diagram. The new object turned out to be a 0.9 Gyr old outer LMC disc cluster, which possibly reached the present position after being scattered from the innermost LMC regions where it might have been born. We arrived at this conclusion by examining the spatial distribution of LMC star clusters of similar age, by comparing the derived spectroscopic metallicity with that expected for an outside-in galaxy formation scenario, by considering the cluster internal dynamical stage as inferred from its derived structural parameters and by estimating the circular velocity of a disc that rotates with the corresponding star cluster radial velocity at the cluster's deprojected distance, which resulted to be nearly 60 per cent higher than that of most of the outer LMC disc clusters.
Fil: Piatti, Andres Eduardo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Salinas, Ricardo. Gemini Observatorysouthern Operations Center; Chile
Fil: Grebel, Eva K.. Ruprecht Karls Universitat Heidelberg. Fakultat Fur Physik And Astronomie.; Alemania - Materia
-
GALAXIES: INDIVIDUAL: LMC
GALAXIES: STAR CLUSTERS: GENERAL - 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:11336/124428
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A likely runaway star cluster in the outer disc of the Large Magellanic CloudPiatti, Andres EduardoSalinas, RicardoGrebel, Eva K.GALAXIES: INDIVIDUAL: LMCGALAXIES: STAR CLUSTERS: GENERALhttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We present results from photometric and spectroscopic data obtained with SOAR and Gemini observatory facilities in the field of a recently discovered star cluster. The cluster, projected towards the Eastern side of the outer disc of the Large Magellanic Cloud (LMC),was originally placed nearly 10 kpc behind the LMC with an age and metallicity typical of the innermost LMC star cluster population.We assigned radial velocity (RV) memberships to stars observed spectroscopically, and derived the cluster age and distance from theoretical isochrone fitting to the cluster colour-magnitude diagram. The new object turned out to be a 0.9 Gyr old outer LMC disc cluster, which possibly reached the present position after being scattered from the innermost LMC regions where it might have been born. We arrived at this conclusion by examining the spatial distribution of LMC star clusters of similar age, by comparing the derived spectroscopic metallicity with that expected for an outside-in galaxy formation scenario, by considering the cluster internal dynamical stage as inferred from its derived structural parameters and by estimating the circular velocity of a disc that rotates with the corresponding star cluster radial velocity at the cluster's deprojected distance, which resulted to be nearly 60 per cent higher than that of most of the outer LMC disc clusters.Fil: Piatti, Andres Eduardo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Salinas, Ricardo. Gemini Observatorysouthern Operations Center; ChileFil: Grebel, Eva K.. Ruprecht Karls Universitat Heidelberg. Fakultat Fur Physik And Astronomie.; AlemaniaWiley Blackwell Publishing, Inc2018-10-12info: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/11336/124428Piatti, Andres Eduardo; Salinas, Ricardo; Grebel, Eva K.; A likely runaway star cluster in the outer disc of the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 482; 1; 12-10-2018; 980-9870035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/482/1/980/5128516?login=trueinfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty2761info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:39:20Zoai:ri.conicet.gov.ar:11336/124428instacron: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 09:39:20.418CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
A likely runaway star cluster in the outer disc of the Large Magellanic Cloud |
title |
A likely runaway star cluster in the outer disc of the Large Magellanic Cloud |
spellingShingle |
A likely runaway star cluster in the outer disc of the Large Magellanic Cloud Piatti, Andres Eduardo GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL |
title_short |
A likely runaway star cluster in the outer disc of the Large Magellanic Cloud |
title_full |
A likely runaway star cluster in the outer disc of the Large Magellanic Cloud |
title_fullStr |
A likely runaway star cluster in the outer disc of the Large Magellanic Cloud |
title_full_unstemmed |
A likely runaway star cluster in the outer disc of the Large Magellanic Cloud |
title_sort |
A likely runaway star cluster in the outer disc of the Large Magellanic Cloud |
dc.creator.none.fl_str_mv |
Piatti, Andres Eduardo Salinas, Ricardo Grebel, Eva K. |
author |
Piatti, Andres Eduardo |
author_facet |
Piatti, Andres Eduardo Salinas, Ricardo Grebel, Eva K. |
author_role |
author |
author2 |
Salinas, Ricardo Grebel, Eva K. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL |
topic |
GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL |
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 present results from photometric and spectroscopic data obtained with SOAR and Gemini observatory facilities in the field of a recently discovered star cluster. The cluster, projected towards the Eastern side of the outer disc of the Large Magellanic Cloud (LMC),was originally placed nearly 10 kpc behind the LMC with an age and metallicity typical of the innermost LMC star cluster population.We assigned radial velocity (RV) memberships to stars observed spectroscopically, and derived the cluster age and distance from theoretical isochrone fitting to the cluster colour-magnitude diagram. The new object turned out to be a 0.9 Gyr old outer LMC disc cluster, which possibly reached the present position after being scattered from the innermost LMC regions where it might have been born. We arrived at this conclusion by examining the spatial distribution of LMC star clusters of similar age, by comparing the derived spectroscopic metallicity with that expected for an outside-in galaxy formation scenario, by considering the cluster internal dynamical stage as inferred from its derived structural parameters and by estimating the circular velocity of a disc that rotates with the corresponding star cluster radial velocity at the cluster's deprojected distance, which resulted to be nearly 60 per cent higher than that of most of the outer LMC disc clusters. Fil: Piatti, Andres Eduardo. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina Fil: Salinas, Ricardo. Gemini Observatorysouthern Operations Center; Chile Fil: Grebel, Eva K.. Ruprecht Karls Universitat Heidelberg. Fakultat Fur Physik And Astronomie.; Alemania |
description |
We present results from photometric and spectroscopic data obtained with SOAR and Gemini observatory facilities in the field of a recently discovered star cluster. The cluster, projected towards the Eastern side of the outer disc of the Large Magellanic Cloud (LMC),was originally placed nearly 10 kpc behind the LMC with an age and metallicity typical of the innermost LMC star cluster population.We assigned radial velocity (RV) memberships to stars observed spectroscopically, and derived the cluster age and distance from theoretical isochrone fitting to the cluster colour-magnitude diagram. The new object turned out to be a 0.9 Gyr old outer LMC disc cluster, which possibly reached the present position after being scattered from the innermost LMC regions where it might have been born. We arrived at this conclusion by examining the spatial distribution of LMC star clusters of similar age, by comparing the derived spectroscopic metallicity with that expected for an outside-in galaxy formation scenario, by considering the cluster internal dynamical stage as inferred from its derived structural parameters and by estimating the circular velocity of a disc that rotates with the corresponding star cluster radial velocity at the cluster's deprojected distance, which resulted to be nearly 60 per cent higher than that of most of the outer LMC disc clusters. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-10-12 |
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/11336/124428 Piatti, Andres Eduardo; Salinas, Ricardo; Grebel, Eva K.; A likely runaway star cluster in the outer disc of the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 482; 1; 12-10-2018; 980-987 0035-8711 1365-2966 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/124428 |
identifier_str_mv |
Piatti, Andres Eduardo; Salinas, Ricardo; Grebel, Eva K.; A likely runaway star cluster in the outer disc of the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 482; 1; 12-10-2018; 980-987 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/url/https://academic.oup.com/mnras/article/482/1/980/5128516?login=true info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty2761 |
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 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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1844613244541468672 |
score |
13.070432 |