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
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/124428
Acceder
id CONICETDig_2e6bec43e25611921ef3859107831001
oai_identifier_str oai:ri.conicet.gov.ar:11336/124428
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling 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 Técnicas2025-10-22T11:07:44Zoai: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:34982025-10-22 11:07:44.485CONICET 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
_version_ 1846781397353627648
score 12.982451

Publicaciones similares