Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud
- Autores
- Piatti, Andres Eduardo; Mackey, A. Dougal
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present for the first time extended stellar density and/or surface brightness radial profiles for almost all the known LargeMagellanic Cloud (LMC) old globular clusters (GCs). These were built from DECam images and reach out to ~ 4 times the GCs' tidal radii. The background subtracted radial profiles reveal that the GCs located closer than ~ 5 kpc from the LMC centre contain an excess of stars in their outermost regions with respect to the stellar density expected from a King profile. Such a residual amount of stars, not seen in GCs located farther than ~ 5 kpc from the LMC centre, as well as the GCs' dimensions, shows a clear dependence with the GCs' positions in the galaxy, in the sense that, the farther the GC from the centre of the LMC, the larger both the excess of stars in its outskirts and size. Although the masses of GCs located inside and outside ~ 5 kpc are commensurate, the outermost regions of GCs located closer than ~ 5 kpc from the LMC centre appear to have dynamically evolved more quickly. These outcomes can be fully interpreted in the light of the known GC radial velocity disc-like kinematics, from which GCs have been somehow mostly experiencing the influence of the LMC gravitational field at their respective mean distances from the LMC centre.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Mackey, A. Dougal. The Australian National University; Australia - Materia
-
GALAXIES: INDIVIDUAL: LMC
GALAXIES: STAR CLUSTERS: GENERAL
TECHNIQUES: PHOTOMETRIC - 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:11336/134612
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spelling |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic CloudPiatti, Andres EduardoMackey, A. DougalGALAXIES: INDIVIDUAL: LMCGALAXIES: STAR CLUSTERS: GENERALTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We present for the first time extended stellar density and/or surface brightness radial profiles for almost all the known LargeMagellanic Cloud (LMC) old globular clusters (GCs). These were built from DECam images and reach out to ~ 4 times the GCs' tidal radii. The background subtracted radial profiles reveal that the GCs located closer than ~ 5 kpc from the LMC centre contain an excess of stars in their outermost regions with respect to the stellar density expected from a King profile. Such a residual amount of stars, not seen in GCs located farther than ~ 5 kpc from the LMC centre, as well as the GCs' dimensions, shows a clear dependence with the GCs' positions in the galaxy, in the sense that, the farther the GC from the centre of the LMC, the larger both the excess of stars in its outskirts and size. Although the masses of GCs located inside and outside ~ 5 kpc are commensurate, the outermost regions of GCs located closer than ~ 5 kpc from the LMC centre appear to have dynamically evolved more quickly. These outcomes can be fully interpreted in the light of the known GC radial velocity disc-like kinematics, from which GCs have been somehow mostly experiencing the influence of the LMC gravitational field at their respective mean distances from the LMC centre.Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Mackey, A. Dougal. The Australian National University; AustraliaWiley Blackwell Publishing, Inc2018-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/134612Piatti, Andres Eduardo; Mackey, A. Dougal; Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 478; 2; 8-2018; 2164-21760035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty1048info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/478/2/2164/4987219info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:09Zoai:ri.conicet.gov.ar:11336/134612instacron: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 10:00:09.919CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud |
title |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud |
spellingShingle |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud Piatti, Andres Eduardo GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL TECHNIQUES: PHOTOMETRIC |
title_short |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud |
title_full |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud |
title_fullStr |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud |
title_full_unstemmed |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud |
title_sort |
Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud |
dc.creator.none.fl_str_mv |
Piatti, Andres Eduardo Mackey, A. Dougal |
author |
Piatti, Andres Eduardo |
author_facet |
Piatti, Andres Eduardo Mackey, A. Dougal |
author_role |
author |
author2 |
Mackey, A. Dougal |
author2_role |
author |
dc.subject.none.fl_str_mv |
GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL TECHNIQUES: PHOTOMETRIC |
topic |
GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL TECHNIQUES: PHOTOMETRIC |
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 for the first time extended stellar density and/or surface brightness radial profiles for almost all the known LargeMagellanic Cloud (LMC) old globular clusters (GCs). These were built from DECam images and reach out to ~ 4 times the GCs' tidal radii. The background subtracted radial profiles reveal that the GCs located closer than ~ 5 kpc from the LMC centre contain an excess of stars in their outermost regions with respect to the stellar density expected from a King profile. Such a residual amount of stars, not seen in GCs located farther than ~ 5 kpc from the LMC centre, as well as the GCs' dimensions, shows a clear dependence with the GCs' positions in the galaxy, in the sense that, the farther the GC from the centre of the LMC, the larger both the excess of stars in its outskirts and size. Although the masses of GCs located inside and outside ~ 5 kpc are commensurate, the outermost regions of GCs located closer than ~ 5 kpc from the LMC centre appear to have dynamically evolved more quickly. These outcomes can be fully interpreted in the light of the known GC radial velocity disc-like kinematics, from which GCs have been somehow mostly experiencing the influence of the LMC gravitational field at their respective mean distances from the LMC centre. Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina Fil: Mackey, A. Dougal. The Australian National University; Australia |
description |
We present for the first time extended stellar density and/or surface brightness radial profiles for almost all the known LargeMagellanic Cloud (LMC) old globular clusters (GCs). These were built from DECam images and reach out to ~ 4 times the GCs' tidal radii. The background subtracted radial profiles reveal that the GCs located closer than ~ 5 kpc from the LMC centre contain an excess of stars in their outermost regions with respect to the stellar density expected from a King profile. Such a residual amount of stars, not seen in GCs located farther than ~ 5 kpc from the LMC centre, as well as the GCs' dimensions, shows a clear dependence with the GCs' positions in the galaxy, in the sense that, the farther the GC from the centre of the LMC, the larger both the excess of stars in its outskirts and size. Although the masses of GCs located inside and outside ~ 5 kpc are commensurate, the outermost regions of GCs located closer than ~ 5 kpc from the LMC centre appear to have dynamically evolved more quickly. These outcomes can be fully interpreted in the light of the known GC radial velocity disc-like kinematics, from which GCs have been somehow mostly experiencing the influence of the LMC gravitational field at their respective mean distances from the LMC centre. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-08 |
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/11336/134612 Piatti, Andres Eduardo; Mackey, A. Dougal; Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 478; 2; 8-2018; 2164-2176 0035-8711 1365-2966 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/134612 |
identifier_str_mv |
Piatti, Andres Eduardo; Mackey, A. Dougal; Evidence of differential tidal effects in the old globular cluster population of the Large Magellanic Cloud; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 478; 2; 8-2018; 2164-2176 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/doi/10.1093/mnras/sty1048 info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/478/2/2164/4987219 |
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 |
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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1844613780020920320 |
score |
13.070432 |