Two extreme contact binary systems in the nearest globular cluster M4

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 s...

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Detalles Bibliográficos
Autores principales: Liu, L., Qian, S. B., Fernández Lajús, Eduardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Ciencias Astronómicas
Binaries: eclipsing
Blue stragglers
Stars: evolution
Stars: individual: V47
Stars: individual: V53
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83953
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83953
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Binaries: eclipsing
Blue stragglers
Stars: evolution
Stars: individual: V47
Stars: individual: V53
spellingShingle Ciencias Astronómicas
Binaries: eclipsing
Blue stragglers
Stars: evolution
Stars: individual: V47
Stars: individual: V53
Liu, L.
Qian, S. B.
Fernández Lajús, Eduardo
Two extreme contact binary systems in the nearest globular cluster M4
topic_facet Ciencias Astronómicas
Binaries: eclipsing
Blue stragglers
Stars: evolution
Stars: individual: V47
Stars: individual: V53
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.
format Articulo
Articulo
author Liu, L.
Qian, S. B.
Fernández Lajús, Eduardo
author_facet Liu, L.
Qian, S. B.
Fernández Lajús, Eduardo
author_sort Liu, L.
title Two extreme contact binary systems in the nearest globular cluster M4
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
publishDate 2011
url http://sedici.unlp.edu.ar/handle/10915/83953
work_keys_str_mv AT liul twoextremecontactbinarysystemsinthenearestglobularclusterm4
AT qiansb twoextremecontactbinarysystemsinthenearestglobularclusterm4
AT fernandezlajuseduardo twoextremecontactbinarysystemsinthenearestglobularclusterm4
bdutipo_str Repositorios
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