Dynamical detection of three triple stellar systems in open clusters

Autores
Gonzalez, Jorge Federico; Veramendi Pont, María Eugenia; Cowley, C. R.
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a kinematic analysis of three triple stellar systems belonging to two open clusters: CPD−60°961 and HD 66137 in NGC 2516, and HD 315031 in NGC 6530. All three systems are hierarchical triples with a close binary bound to a third body in a wider orbit, whose presence is detected through velocity variations of the close binary barycentre. Orbital parameters are derived from radial velocity curves. Absolute parameters for all stars are estimated assuming cluster membership. Some dynamical and evolutionary aspects of these systems are discussed, particularly the possible influence of Kozai cycles. The two systems of NGC 2516 have similar orbital configurations with inner periods of 11.23 and 8.70 d and outer periods of 9.79 and 9.24 yr. The young system HD 315031 in the cluster NGC 6530 has an inner binary with a period of 1.37 d and a very eccentric (e = 0.85) outer orbit with a period of 483 d. We report also radial velocity measurements of the components of the visual binary CPD−60°944 in NGC 2516. Including results from previous works, this cluster would harbour five hierarchical triples. Possible dynamical evolutionary scenarios are discussed. Long-term radial velocity monitoring is highlighted as strategy for the detection of subsystems with intermediate separations, which are hard to cover with normal spectroscopic studies or visual techniques.
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Cienti­ficas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; Argentina
Fil: Veramendi Pont, María Eugenia. Consejo Nacional de Investigaciones Cienti­ficas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; Argentina
Fil: Cowley, C. R.. University of Michigan. Department of Astronomy; España
Materia
Binaries: spectroscopic
Stars: chemically peculiar
Open clusters and associations
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:11336/4975
Acceder
id CONICETDig_fd705f81499dffd222c32f13fb66ebe5
oai_identifier_str oai:ri.conicet.gov.ar:11336/4975
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Dynamical detection of three triple stellar systems in open clustersGonzalez, Jorge FedericoVeramendi Pont, María EugeniaCowley, C. R.Binaries: spectroscopicStars: chemically peculiarOpen clusters and associationshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present a kinematic analysis of three triple stellar systems belonging to two open clusters: CPD−60°961 and HD 66137 in NGC 2516, and HD 315031 in NGC 6530. All three systems are hierarchical triples with a close binary bound to a third body in a wider orbit, whose presence is detected through velocity variations of the close binary barycentre. Orbital parameters are derived from radial velocity curves. Absolute parameters for all stars are estimated assuming cluster membership. Some dynamical and evolutionary aspects of these systems are discussed, particularly the possible influence of Kozai cycles. The two systems of NGC 2516 have similar orbital configurations with inner periods of 11.23 and 8.70 d and outer periods of 9.79 and 9.24 yr. The young system HD 315031 in the cluster NGC 6530 has an inner binary with a period of 1.37 d and a very eccentric (e = 0.85) outer orbit with a period of 483 d. We report also radial velocity measurements of the components of the visual binary CPD−60°944 in NGC 2516. Including results from previous works, this cluster would harbour five hierarchical triples. Possible dynamical evolutionary scenarios are discussed. Long-term radial velocity monitoring is highlighted as strategy for the detection of subsystems with intermediate separations, which are hard to cover with normal spectroscopic studies or visual techniques.Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Cienti­ficas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; ArgentinaFil: Veramendi Pont, María Eugenia. Consejo Nacional de Investigaciones Cienti­ficas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; ArgentinaFil: Cowley, C. R.. University of Michigan. Department of Astronomy; EspañaWiley2014-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4975Gonzalez, Jorge Federico; Veramendi Pont, María Eugenia; Cowley, C. R.; Dynamical detection of three triple stellar systems in open clusters; Wiley; Monthly Notices of the Royal Astronomical Society; 443; 2; 9-2014; 1523-15310035-8711enginfo:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/443/2/1523.abstractinfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu1257info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1404.6576v2info:eu-repo/semantics/altIdentifier/arxiv/1404.6576v2info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:54:43Zoai:ri.conicet.gov.ar:11336/4975instacron: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 09:54:43.922CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Dynamical detection of three triple stellar systems in open clusters
title Dynamical detection of three triple stellar systems in open clusters
spellingShingle Dynamical detection of three triple stellar systems in open clusters
Gonzalez, Jorge Federico
Binaries: spectroscopic
Stars: chemically peculiar
Open clusters and associations
title_short Dynamical detection of three triple stellar systems in open clusters
title_full Dynamical detection of three triple stellar systems in open clusters
title_fullStr Dynamical detection of three triple stellar systems in open clusters
title_full_unstemmed Dynamical detection of three triple stellar systems in open clusters
title_sort Dynamical detection of three triple stellar systems in open clusters
dc.creator.none.fl_str_mv Gonzalez, Jorge Federico
Veramendi Pont, María Eugenia
Cowley, C. R.
author Gonzalez, Jorge Federico
author_facet Gonzalez, Jorge Federico
Veramendi Pont, María Eugenia
Cowley, C. R.
author_role author
author2 Veramendi Pont, María Eugenia
Cowley, C. R.
author2_role author
author
dc.subject.none.fl_str_mv Binaries: spectroscopic
Stars: chemically peculiar
Open clusters and associations
topic Binaries: spectroscopic
Stars: chemically peculiar
Open clusters and associations
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present a kinematic analysis of three triple stellar systems belonging to two open clusters: CPD−60°961 and HD 66137 in NGC 2516, and HD 315031 in NGC 6530. All three systems are hierarchical triples with a close binary bound to a third body in a wider orbit, whose presence is detected through velocity variations of the close binary barycentre. Orbital parameters are derived from radial velocity curves. Absolute parameters for all stars are estimated assuming cluster membership. Some dynamical and evolutionary aspects of these systems are discussed, particularly the possible influence of Kozai cycles. The two systems of NGC 2516 have similar orbital configurations with inner periods of 11.23 and 8.70 d and outer periods of 9.79 and 9.24 yr. The young system HD 315031 in the cluster NGC 6530 has an inner binary with a period of 1.37 d and a very eccentric (e = 0.85) outer orbit with a period of 483 d. We report also radial velocity measurements of the components of the visual binary CPD−60°944 in NGC 2516. Including results from previous works, this cluster would harbour five hierarchical triples. Possible dynamical evolutionary scenarios are discussed. Long-term radial velocity monitoring is highlighted as strategy for the detection of subsystems with intermediate separations, which are hard to cover with normal spectroscopic studies or visual techniques.
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Cienti­ficas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; Argentina
Fil: Veramendi Pont, María Eugenia. Consejo Nacional de Investigaciones Cienti­ficas y Tecnicas. Centro Cientifico Tecnologico San Juan. Instituto de Ciencias Astronomicas de la Tierra y del Espacio; Argentina
Fil: Cowley, C. R.. University of Michigan. Department of Astronomy; España
description We present a kinematic analysis of three triple stellar systems belonging to two open clusters: CPD−60°961 and HD 66137 in NGC 2516, and HD 315031 in NGC 6530. All three systems are hierarchical triples with a close binary bound to a third body in a wider orbit, whose presence is detected through velocity variations of the close binary barycentre. Orbital parameters are derived from radial velocity curves. Absolute parameters for all stars are estimated assuming cluster membership. Some dynamical and evolutionary aspects of these systems are discussed, particularly the possible influence of Kozai cycles. The two systems of NGC 2516 have similar orbital configurations with inner periods of 11.23 and 8.70 d and outer periods of 9.79 and 9.24 yr. The young system HD 315031 in the cluster NGC 6530 has an inner binary with a period of 1.37 d and a very eccentric (e = 0.85) outer orbit with a period of 483 d. We report also radial velocity measurements of the components of the visual binary CPD−60°944 in NGC 2516. Including results from previous works, this cluster would harbour five hierarchical triples. Possible dynamical evolutionary scenarios are discussed. Long-term radial velocity monitoring is highlighted as strategy for the detection of subsystems with intermediate separations, which are hard to cover with normal spectroscopic studies or visual techniques.
publishDate 2014
dc.date.none.fl_str_mv 2014-09
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/11336/4975
Gonzalez, Jorge Federico; Veramendi Pont, María Eugenia; Cowley, C. R.; Dynamical detection of three triple stellar systems in open clusters; Wiley; Monthly Notices of the Royal Astronomical Society; 443; 2; 9-2014; 1523-1531
0035-8711
url http://hdl.handle.net/11336/4975
identifier_str_mv Gonzalez, Jorge Federico; Veramendi Pont, María Eugenia; Cowley, C. R.; Dynamical detection of three triple stellar systems in open clusters; Wiley; Monthly Notices of the Royal Astronomical Society; 443; 2; 9-2014; 1523-1531
0035-8711
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://mnras.oxfordjournals.org/content/443/2/1523.abstract
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stu1257
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/url/http://arxiv.org/abs/1404.6576v2
info:eu-repo/semantics/altIdentifier/arxiv/1404.6576v2
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
publisher.none.fl_str_mv Wiley
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_ 1844613660481159168
score 13.070432

Publicaciones similares