On the trapping of stars by a newborn stellar supercluster

Autores
Carpintero, Daniel Diego; Muzzio, Juan Carlos
Año de publicación
2009
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Numerical experiments conducted by Fellhauer et al. (2006) suggest that a supercluster may capture up to about 40 per cent of its mass from the galaxy where it belongs. Nevertheless, in those experiments the cluster was created making appear its mass out of nothing, rather than from mass already present in the galaxy. Here we use a thought experiment, plus a few simple computations, to show that the difference between the dynamical effects of these two scenarios (i.e., mass creation vs. mass concentration) is actually very important. We also present the results of new numerical experiments, simulating the formation of the cluster through mass concentration, that show that trapping depends critically on the process of cluster formation and that the amounts of gained mass are substantially smaller than those obtained from mass creation. Besides, the criterion used by Fellhauer et al. (2006) to decide the membership to the supercluster is not adequate, and the use of a more sensible criterion, based on Jacobi’s integral, renders a number of captures at the very least an order of magnitude smaller. All things considered, the captures cannot exceed, at most, a few percent of the mass of the cluster.
Fil: Carpintero, Daniel Diego. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Muzzio, Juan Carlos. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Materia
N-body simulations
Dwarf galaxies
Star clusters
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:11336/42886
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the trapping of stars by a newborn stellar superclusterCarpintero, Daniel DiegoMuzzio, Juan CarlosN-body simulationsDwarf galaxiesStar clustershttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Numerical experiments conducted by Fellhauer et al. (2006) suggest that a supercluster may capture up to about 40 per cent of its mass from the galaxy where it belongs. Nevertheless, in those experiments the cluster was created making appear its mass out of nothing, rather than from mass already present in the galaxy. Here we use a thought experiment, plus a few simple computations, to show that the difference between the dynamical effects of these two scenarios (i.e., mass creation vs. mass concentration) is actually very important. We also present the results of new numerical experiments, simulating the formation of the cluster through mass concentration, that show that trapping depends critically on the process of cluster formation and that the amounts of gained mass are substantially smaller than those obtained from mass creation. Besides, the criterion used by Fellhauer et al. (2006) to decide the membership to the supercluster is not adequate, and the use of a more sensible criterion, based on Jacobi’s integral, renders a number of captures at the very least an order of magnitude smaller. All things considered, the captures cannot exceed, at most, a few percent of the mass of the cluster.Fil: Carpintero, Daniel Diego. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaFil: Muzzio, Juan Carlos. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; ArgentinaWiley Blackwell Publishing, Inc2009-12info: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/11336/42886Carpintero, Daniel Diego; Muzzio, Juan Carlos; On the trapping of stars by a newborn stellar supercluster; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 397; 2; 12-2009; 1021-10260035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2009.15024.xinfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/397/2/1021/972681info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:11:11Zoai:ri.conicet.gov.ar:11336/42886instacron: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 11:11:11.374CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the trapping of stars by a newborn stellar supercluster
title On the trapping of stars by a newborn stellar supercluster
spellingShingle On the trapping of stars by a newborn stellar supercluster
Carpintero, Daniel Diego
N-body simulations
Dwarf galaxies
Star clusters
title_short On the trapping of stars by a newborn stellar supercluster
title_full On the trapping of stars by a newborn stellar supercluster
title_fullStr On the trapping of stars by a newborn stellar supercluster
title_full_unstemmed On the trapping of stars by a newborn stellar supercluster
title_sort On the trapping of stars by a newborn stellar supercluster
dc.creator.none.fl_str_mv Carpintero, Daniel Diego
Muzzio, Juan Carlos
author Carpintero, Daniel Diego
author_facet Carpintero, Daniel Diego
Muzzio, Juan Carlos
author_role author
author2 Muzzio, Juan Carlos
author2_role author
dc.subject.none.fl_str_mv N-body simulations
Dwarf galaxies
Star clusters
topic N-body simulations
Dwarf galaxies
Star clusters
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Numerical experiments conducted by Fellhauer et al. (2006) suggest that a supercluster may capture up to about 40 per cent of its mass from the galaxy where it belongs. Nevertheless, in those experiments the cluster was created making appear its mass out of nothing, rather than from mass already present in the galaxy. Here we use a thought experiment, plus a few simple computations, to show that the difference between the dynamical effects of these two scenarios (i.e., mass creation vs. mass concentration) is actually very important. We also present the results of new numerical experiments, simulating the formation of the cluster through mass concentration, that show that trapping depends critically on the process of cluster formation and that the amounts of gained mass are substantially smaller than those obtained from mass creation. Besides, the criterion used by Fellhauer et al. (2006) to decide the membership to the supercluster is not adequate, and the use of a more sensible criterion, based on Jacobi’s integral, renders a number of captures at the very least an order of magnitude smaller. All things considered, the captures cannot exceed, at most, a few percent of the mass of the cluster.
Fil: Carpintero, Daniel Diego. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
Fil: Muzzio, Juan Carlos. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Astrofísica La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas. Instituto de Astrofísica La Plata; Argentina
description Numerical experiments conducted by Fellhauer et al. (2006) suggest that a supercluster may capture up to about 40 per cent of its mass from the galaxy where it belongs. Nevertheless, in those experiments the cluster was created making appear its mass out of nothing, rather than from mass already present in the galaxy. Here we use a thought experiment, plus a few simple computations, to show that the difference between the dynamical effects of these two scenarios (i.e., mass creation vs. mass concentration) is actually very important. We also present the results of new numerical experiments, simulating the formation of the cluster through mass concentration, that show that trapping depends critically on the process of cluster formation and that the amounts of gained mass are substantially smaller than those obtained from mass creation. Besides, the criterion used by Fellhauer et al. (2006) to decide the membership to the supercluster is not adequate, and the use of a more sensible criterion, based on Jacobi’s integral, renders a number of captures at the very least an order of magnitude smaller. All things considered, the captures cannot exceed, at most, a few percent of the mass of the cluster.
publishDate 2009
dc.date.none.fl_str_mv 2009-12
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/11336/42886
Carpintero, Daniel Diego; Muzzio, Juan Carlos; On the trapping of stars by a newborn stellar supercluster; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 397; 2; 12-2009; 1021-1026
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/42886
identifier_str_mv Carpintero, Daniel Diego; Muzzio, Juan Carlos; On the trapping of stars by a newborn stellar supercluster; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 397; 2; 12-2009; 1021-1026
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2009.15024.x
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/397/2/1021/972681
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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score 12.982451

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