Orbital Period Changes of the Eclipsing Binaries RW Cap, BG Peg, and CU Peg

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
A. I. Khaliullina
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引用次数: 0

Abstract

The changes in the orbital periods of the Algol-type eclipsing binaries RW Cap, BG Peg, and CU Peg have been studied. The changes in the orbital period of RW Cap and BG Peg can be well represented by cyclic variations with large amplitude. It has been shown, that these changes cannot be explained by the presence of a third body. They can be a consequence of the magnetic activity of the secondary components having a convective zone. The changes in the orbital period of CU Peg can be represented by a superposition of a secular period increase due to exchange of matter between the components and cyclic variations. These cyclic variations can occur due to the presence of a third body in the system or they can be a consequence of the magnetic activity of the secondary component.

Abstract Image

Abstract Image

食双星 RW Cap、BG Peg 和 CU Peg 的轨道周期变化
摘要 研究了天神型食双星RW Cap、BG Peg和CU Peg的轨道周期变化。RW Cap和BG Peg的轨道周期变化可以很好地用大振幅的周期变化来表示。研究表明,这些变化无法用第三天体的存在来解释。它们可能是具有对流区的次级成分的磁活动造成的。CU Peg 的轨道周期变化可以用两个叠加来表示,一个是由于各组成部分之间的物质交换而导致的周期性增长,另一个是周期性变化。这些周期性变化可能是由于系统中存在第三个天体,也可能是次级天体磁性活动的结果。
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来源期刊
Astronomy Reports
Astronomy Reports 地学天文-天文与天体物理
CiteScore
1.40
自引率
20.00%
发文量
57
审稿时长
6-12 weeks
期刊介绍: Astronomy Reports is an international peer reviewed journal that publishes original papers on astronomical topics, including theoretical and observational astrophysics, physics of the Sun, planetary astrophysics, radio astronomy, stellar astronomy, celestial mechanics, and astronomy methods and instrumentation.
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