Period changes of the sample of eclipsing binaries with active chromospheres

Period changes of the sample of eclipsing binaries with active chromospheres

In this work we present results derived from analysis of the O-C behaviour of ten eclipsing binary systems: AR Lac, CG Cyg, HP Aur, MM Her, RS CVn, RT And, SV Cam, V471 Tau, WW Dra and CF Tuc. It was proved on the basis of moments of minima compiled from the literature and new ones determined from...

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Дата:2012
Автори: Jableka, D., Zola, S., Zakrzewski, B., Szymanski, T., Kuzmicz, A., de Villiers, S.N., Zejda, M., Koziel-Wierzbowska, D.
Формат: Стаття
Мова:English
Опубліковано: Головна астрономічна обсерваторія НАН України 2012
Назва видання:Advances in Astronomy and Space Physics
Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/119181
Теги: Додати тег
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Period changes of the sample of eclipsing binaries with active chromospheres / D. Jableka, S. Zola, B. Zakrzewski, T. Szymanski, A. Kuzmicz, S.N. de Villiers, M. Zejda, D. Koziel-Wierzbowska // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 2. — С. 128-131. — Бібліогр.: 16 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
id irk-123456789-119181
record_format dspace
spelling irk-123456789-1191812017-06-05T03:02:43Z Period changes of the sample of eclipsing binaries with active chromospheres Jableka, D. Zola, S. Zakrzewski, B. Szymanski, T. Kuzmicz, A. de Villiers, S.N. Zejda, M. Koziel-Wierzbowska, D. In this work we present results derived from analysis of the O-C behaviour of ten eclipsing binary systems: AR Lac, CG Cyg, HP Aur, MM Her, RS CVn, RT And, SV Cam, V471 Tau, WW Dra and CF Tuc. It was proved on the basis of moments of minima compiled from the literature and new ones determined from recent observations, that these binaries show long term (19-91 years) modulations of their orbital periods, clearly visible in their OC diagrams. Two possible explanations for this effect are considered: (1) the light-travel time effect due to the presence of a third body orbiting the eclipsing systems; (2) the Applegate mechanism predicting period modulation by changes in the distribution of angular momentum as a star goes through its activity cycles. It was found that in the case of four systems the existence of a third star, orbiting the binary, is a more plausible explanation of observations. 2012 Article Period changes of the sample of eclipsing binaries with active chromospheres / D. Jableka, S. Zola, B. Zakrzewski, T. Szymanski, A. Kuzmicz, S.N. de Villiers, M. Zejda, D. Koziel-Wierzbowska // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 2. — С. 128-131. — Бібліогр.: 16 назв. — англ. 2227-1481 http://dspace.nbuv.gov.ua/handle/123456789/119181 en Advances in Astronomy and Space Physics Головна астрономічна обсерваторія НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
description In this work we present results derived from analysis of the O-C behaviour of ten eclipsing binary systems: AR Lac, CG Cyg, HP Aur, MM Her, RS CVn, RT And, SV Cam, V471 Tau, WW Dra and CF Tuc. It was proved on the basis of moments of minima compiled from the literature and new ones determined from recent observations, that these binaries show long term (19-91 years) modulations of their orbital periods, clearly visible in their OC diagrams. Two possible explanations for this effect are considered: (1) the light-travel time effect due to the presence of a third body orbiting the eclipsing systems; (2) the Applegate mechanism predicting period modulation by changes in the distribution of angular momentum as a star goes through its activity cycles. It was found that in the case of four systems the existence of a third star, orbiting the binary, is a more plausible explanation of observations.
format Article
author Jableka, D.
Zola, S.
Zakrzewski, B.
Szymanski, T.
Kuzmicz, A.
de Villiers, S.N.
Zejda, M.
Koziel-Wierzbowska, D.
spellingShingle Jableka, D.
Zola, S.
Zakrzewski, B.
Szymanski, T.
Kuzmicz, A.
de Villiers, S.N.
Zejda, M.
Koziel-Wierzbowska, D.
Period changes of the sample of eclipsing binaries with active chromospheres
Advances in Astronomy and Space Physics
author_facet Jableka, D.
Zola, S.
Zakrzewski, B.
Szymanski, T.
Kuzmicz, A.
de Villiers, S.N.
Zejda, M.
Koziel-Wierzbowska, D.
author_sort Jableka, D.
title Period changes of the sample of eclipsing binaries with active chromospheres
title_short Period changes of the sample of eclipsing binaries with active chromospheres
title_full Period changes of the sample of eclipsing binaries with active chromospheres
title_fullStr Period changes of the sample of eclipsing binaries with active chromospheres
title_full_unstemmed Period changes of the sample of eclipsing binaries with active chromospheres
title_sort period changes of the sample of eclipsing binaries with active chromospheres
publisher Головна астрономічна обсерваторія НАН України
publishDate 2012
url http://dspace.nbuv.gov.ua/handle/123456789/119181
citation_txt Period changes of the sample of eclipsing binaries with active chromospheres / D. Jableka, S. Zola, B. Zakrzewski, T. Szymanski, A. Kuzmicz, S.N. de Villiers, M. Zejda, D. Koziel-Wierzbowska // Advances in Astronomy and Space Physics. — 2012. — Т. 2., вип. 2. — С. 128-131. — Бібліогр.: 16 назв. — англ.
series Advances in Astronomy and Space Physics
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AT szymanskit periodchangesofthesampleofeclipsingbinarieswithactivechromospheres
AT kuzmicza periodchangesofthesampleofeclipsingbinarieswithactivechromospheres
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first_indexed 2023-10-18T20:33:57Z
last_indexed 2023-10-18T20:33:57Z
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