Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars

The sdB-type close binaries are believed to have experienced a common-envelope phase and may evolve into cataclysmic binaries (CVs). About 10% of all known sdB binaries are eclipsing binaries consisting of very hot subdwarf primaries and low-mass companions with short orbital periods. The eclipse pr...

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Detalles Bibliográficos
Autores principales: Zhu, Lei, Qian, S.-B., Zhao, Er-Gang, Fernández Lajús, Eduardo Eusebio, Han, Z.-T.
Formato: Articulo
Lenguaje:Español
Publicado: 2015
Materias:
Ciencias Astronómicas
Subdwarf
Physics
Astronomy
Binary star
Eclipse
Travel time
Astrophysics
Binary number
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/126027
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-126027
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Astronómicas
Subdwarf
Physics
Astronomy
Binary star
Eclipse
Travel time
Astrophysics
Binary number
spellingShingle Ciencias Astronómicas
Subdwarf
Physics
Astronomy
Binary star
Eclipse
Travel time
Astrophysics
Binary number
Zhu, Lei
Qian, S.-B.
Zhao, Er-Gang
Fernández Lajús, Eduardo Eusebio
Han, Z.-T.
Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
topic_facet Ciencias Astronómicas
Subdwarf
Physics
Astronomy
Binary star
Eclipse
Travel time
Astrophysics
Binary number
description The sdB-type close binaries are believed to have experienced a common-envelope phase and may evolve into cataclysmic binaries (CVs). About 10% of all known sdB binaries are eclipsing binaries consisting of very hot subdwarf primaries and low-mass companions with short orbital periods. The eclipse profiles of these systems are very narrow and deep, which benefits the determination of high precise eclipsing times and makes the detection of small and close-in tertiary bodies possible. Since 2006 we have monitored some sdB-type eclipsing binaries to search for the close-in substellar companions by analyzing the light travel time effect. Here some progresses of the program are reviewed and the formation of sdB-type binary is discussed.
format Articulo
Articulo
author Zhu, Lei
Qian, S.-B.
Zhao, Er-Gang
Fernández Lajús, Eduardo Eusebio
Han, Z.-T.
author_facet Zhu, Lei
Qian, S.-B.
Zhao, Er-Gang
Fernández Lajús, Eduardo Eusebio
Han, Z.-T.
author_sort Zhu, Lei
title Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
title_short Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
title_full Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
title_fullStr Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
title_full_unstemmed Close-In Substellar Companions and the Formation of sdB-Type Close Binary Stars
title_sort close-in substellar companions and the formation of sdb-type close binary stars
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/126027
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AT fernandezlajuseduardoeusebio closeinsubstellarcompanionsandtheformationofsdbtypeclosebinarystars
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