An upper limit to the secular variation of the gravitational constant from white dwarf stars

Autores
García Berro, Enrique; Lorén Aguilar, Pablo; Torres, Santiago; Althaus, Leandro Gabriel; Isern, Jordi
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A variation of the gravitational constant over cosmological ages modifies the main sequence lifetimes and white dwarf cooling ages. Using an state-of-the-art stellar evolutionary code we compute the effects of a secularly varying G on the main sequence ages and, employing white dwarf cooling ages computed taking into account the effects of a running G, we place constraints on the rate of variation of Newton's constant. This is done using the white dwarf luminosity function and the distance of the well studied open Galactic cluster NGC 6791. We derive an upper bound Ġ/G ~ −1.8 × 10−12 yr−1. This upper limit for the secular variation of the gravitational constant compares favorably with those obtained using other stellar evolutionary properties, and can be easily improved if deep images of the cluster allow to obtain an improved white dwarf luminosity function.
Fil: García Berro, Enrique. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; España
Fil: Lorén Aguilar, Pablo. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; España
Fil: Torres, Santiago. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; España
Fil: Althaus, Leandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Isern, Jordi. Institut de Ciències de l’Espai; España
Materia
Gravity
White dwarfs
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:11336/10285
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling An upper limit to the secular variation of the gravitational constant from white dwarf starsGarcía Berro, EnriqueLorén Aguilar, PabloTorres, SantiagoAlthaus, Leandro GabrielIsern, JordiGravityWhite dwarfshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A variation of the gravitational constant over cosmological ages modifies the main sequence lifetimes and white dwarf cooling ages. Using an state-of-the-art stellar evolutionary code we compute the effects of a secularly varying G on the main sequence ages and, employing white dwarf cooling ages computed taking into account the effects of a running G, we place constraints on the rate of variation of Newton's constant. This is done using the white dwarf luminosity function and the distance of the well studied open Galactic cluster NGC 6791. We derive an upper bound Ġ/G ~ −1.8 × 10−12 yr−1. This upper limit for the secular variation of the gravitational constant compares favorably with those obtained using other stellar evolutionary properties, and can be easily improved if deep images of the cluster allow to obtain an improved white dwarf luminosity function.Fil: García Berro, Enrique. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; EspañaFil: Lorén Aguilar, Pablo. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; EspañaFil: Torres, Santiago. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; EspañaFil: Althaus, Leandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Isern, Jordi. Institut de Ciències de l’Espai; EspañaIop Publishing2011-05info: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/11336/10285García Berro, Enrique; Lorén Aguilar, Pablo; Torres, Santiago; Althaus, Leandro Gabriel; Isern, Jordi; An upper limit to the secular variation of the gravitational constant from white dwarf stars; Iop Publishing; Journal Of Cosmology And Astroparticle Physics; 5; 5-2011; 21-361475-7516enginfo:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2011/05/021info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1475-7516/2011/05/021/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:23Zoai:ri.conicet.gov.ar:11336/10285instacron: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 09:33:23.387CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An upper limit to the secular variation of the gravitational constant from white dwarf stars
title An upper limit to the secular variation of the gravitational constant from white dwarf stars
spellingShingle An upper limit to the secular variation of the gravitational constant from white dwarf stars
García Berro, Enrique
Gravity
White dwarfs
title_short An upper limit to the secular variation of the gravitational constant from white dwarf stars
title_full An upper limit to the secular variation of the gravitational constant from white dwarf stars
title_fullStr An upper limit to the secular variation of the gravitational constant from white dwarf stars
title_full_unstemmed An upper limit to the secular variation of the gravitational constant from white dwarf stars
title_sort An upper limit to the secular variation of the gravitational constant from white dwarf stars
dc.creator.none.fl_str_mv García Berro, Enrique
Lorén Aguilar, Pablo
Torres, Santiago
Althaus, Leandro Gabriel
Isern, Jordi
author García Berro, Enrique
author_facet García Berro, Enrique
Lorén Aguilar, Pablo
Torres, Santiago
Althaus, Leandro Gabriel
Isern, Jordi
author_role author
author2 Lorén Aguilar, Pablo
Torres, Santiago
Althaus, Leandro Gabriel
Isern, Jordi
author2_role author
author
author
author
dc.subject.none.fl_str_mv Gravity
White dwarfs
topic Gravity
White dwarfs
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A variation of the gravitational constant over cosmological ages modifies the main sequence lifetimes and white dwarf cooling ages. Using an state-of-the-art stellar evolutionary code we compute the effects of a secularly varying G on the main sequence ages and, employing white dwarf cooling ages computed taking into account the effects of a running G, we place constraints on the rate of variation of Newton's constant. This is done using the white dwarf luminosity function and the distance of the well studied open Galactic cluster NGC 6791. We derive an upper bound Ġ/G ~ −1.8 × 10−12 yr−1. This upper limit for the secular variation of the gravitational constant compares favorably with those obtained using other stellar evolutionary properties, and can be easily improved if deep images of the cluster allow to obtain an improved white dwarf luminosity function.
Fil: García Berro, Enrique. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; España
Fil: Lorén Aguilar, Pablo. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; España
Fil: Torres, Santiago. Universidad Politecnica de Catalunya; España. Institute for Space Studies of Catalonia; España
Fil: Althaus, Leandro Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Isern, Jordi. Institut de Ciències de l’Espai; España
description A variation of the gravitational constant over cosmological ages modifies the main sequence lifetimes and white dwarf cooling ages. Using an state-of-the-art stellar evolutionary code we compute the effects of a secularly varying G on the main sequence ages and, employing white dwarf cooling ages computed taking into account the effects of a running G, we place constraints on the rate of variation of Newton's constant. This is done using the white dwarf luminosity function and the distance of the well studied open Galactic cluster NGC 6791. We derive an upper bound Ġ/G ~ −1.8 × 10−12 yr−1. This upper limit for the secular variation of the gravitational constant compares favorably with those obtained using other stellar evolutionary properties, and can be easily improved if deep images of the cluster allow to obtain an improved white dwarf luminosity function.
publishDate 2011
dc.date.none.fl_str_mv 2011-05
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/11336/10285
García Berro, Enrique; Lorén Aguilar, Pablo; Torres, Santiago; Althaus, Leandro Gabriel; Isern, Jordi; An upper limit to the secular variation of the gravitational constant from white dwarf stars; Iop Publishing; Journal Of Cosmology And Astroparticle Physics; 5; 5-2011; 21-36
1475-7516
url http://hdl.handle.net/11336/10285
identifier_str_mv García Berro, Enrique; Lorén Aguilar, Pablo; Torres, Santiago; Althaus, Leandro Gabriel; Isern, Jordi; An upper limit to the secular variation of the gravitational constant from white dwarf stars; Iop Publishing; Journal Of Cosmology And Astroparticle Physics; 5; 5-2011; 21-36
1475-7516
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/1475-7516/2011/05/021
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/1475-7516/2011/05/021/meta
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 Iop Publishing
publisher.none.fl_str_mv Iop Publishing
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 13.070432

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