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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/83953
Ver los metadatos del registro completo
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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:UNLP2025-10-22T16:56:57Zoai: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:13292025-10-22 16:56:57.973SEDICI (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 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/83953 |
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eng |
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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) |
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