Two extreme contact binary systems in the nearest globular cluster M4

Autores
Liu, L.; Qian, S. B.; Fernández Lajús, Eduardo
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the results of photometric solutions for two contact binaries in the nearby globular cluster M4. We estimate their physical parameters using the light-curve program of the Wilson-Devinney code. These systems have quite different mass ratios, which indicates that they did not form at the same time. V47 is an extreme mass-ratio system (q = 0.123 ± 0.002) being dissimilar to the same kind of field contact binaries. V53 is a high mass-ratio (q = 1.230 ± 0.004), deep-contact (f = 79.7 ± 1.9 per cent) system. It is also a blue straggler.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
Binaries: eclipsing
Blue stragglers
Stars: evolution
Stars: individual: V47
Stars: individual: V53
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/83953
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/83953
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Two extreme contact binary systems in the nearest globular cluster M4Liu, L.Qian, S. B.Fernández Lajús, EduardoCiencias AstronómicasBinaries: eclipsingBlue stragglersStars: evolutionStars: individual: V47Stars: individual: V53We present the results of photometric solutions for two contact binaries in the nearby globular cluster M4. We estimate their physical parameters using the light-curve program of the Wilson-Devinney code. These systems have quite different mass ratios, which indicates that they did not form at the same time. V47 is an extreme mass-ratio system (q = 0.123 ± 0.002) being dissimilar to the same kind of field contact binaries. V53 is a high mass-ratio (q = 1.230 ± 0.004), deep-contact (f = 79.7 ± 1.9 per cent) system. It is also a blue straggler.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1509-1522http://sedici.unlp.edu.ar/handle/10915/83953enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.18791.xinfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:06Zoai:sedici.unlp.edu.ar:10915/83953Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:06.498SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Two extreme contact binary systems in the nearest globular cluster M4
title Two extreme contact binary systems in the nearest globular cluster M4
spellingShingle Two extreme contact binary systems in the nearest globular cluster M4
Liu, L.
Ciencias Astronómicas
Binaries: eclipsing
Blue stragglers
Stars: evolution
Stars: individual: V47
Stars: individual: V53
title_short Two extreme contact binary systems in the nearest globular cluster M4
title_full Two extreme contact binary systems in the nearest globular cluster M4
title_fullStr Two extreme contact binary systems in the nearest globular cluster M4
title_full_unstemmed Two extreme contact binary systems in the nearest globular cluster M4
title_sort Two extreme contact binary systems in the nearest globular cluster M4
dc.creator.none.fl_str_mv Liu, L.
Qian, S. B.
Fernández Lajús, Eduardo
author Liu, L.
author_facet Liu, L.
Qian, S. B.
Fernández Lajús, Eduardo
author_role author
author2 Qian, S. B.
Fernández Lajús, Eduardo
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Binaries: eclipsing
Blue stragglers
Stars: evolution
Stars: individual: V47
Stars: individual: V53
topic Ciencias Astronómicas
Binaries: eclipsing
Blue stragglers
Stars: evolution
Stars: individual: V47
Stars: individual: V53
dc.description.none.fl_txt_mv We present the results of photometric solutions for two contact binaries in the nearby globular cluster M4. We estimate their physical parameters using the light-curve program of the Wilson-Devinney code. These systems have quite different mass ratios, which indicates that they did not form at the same time. V47 is an extreme mass-ratio system (q = 0.123 ± 0.002) being dissimilar to the same kind of field contact binaries. V53 is a high mass-ratio (q = 1.230 ± 0.004), deep-contact (f = 79.7 ± 1.9 per cent) system. It is also a blue straggler.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description We present the results of photometric solutions for two contact binaries in the nearby globular cluster M4. We estimate their physical parameters using the light-curve program of the Wilson-Devinney code. These systems have quite different mass ratios, which indicates that they did not form at the same time. V47 is an extreme mass-ratio system (q = 0.123 ± 0.002) being dissimilar to the same kind of field contact binaries. V53 is a high mass-ratio (q = 1.230 ± 0.004), deep-contact (f = 79.7 ± 1.9 per cent) system. It is also a blue straggler.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/83953
url http://sedici.unlp.edu.ar/handle/10915/83953
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/doi/10.1111/j.1365-2966.2011.18791.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1509-1522
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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