文章基本信息

标题：On Utmost Multiplicity of Hierarchical Stellar Systems
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作者：Y. M. Gebrehiwot ; D. A. Kovaleva ; A. Yu. Kniazev 等
期刊名称：Open Astronomy
电子版ISSN：2543-6376
出版年度：2016
卷号：25
期号：4
页码：393-399
DOI：10.1515/astro-2017-0258
语种：English
出版社：Walter de Gruyter GmbH & Co. KG
摘要：AbstractAccording to theoretical considerations, multiplicity of hierarchical stellar systems can reach, depending on masses and orbital parameters, several hundred, while observational data confirm the existence of at most septuple (seven-component) systems. In this study, we cross-match the stellar systems of very high multiplicity (six and more components) in modern catalogues of visual double and multiple stars to find among them the candidates to hierarchical systems. After cross-matching the catalogues of closer binaries (eclipsing, spectroscopic, etc.), some of their components were found to be binary/multiple themselves, what increases the system's degree of multiplicity. Optical pairs, known from literature or filtered by the authors, were flagged and excluded from the statistics. We compiled a list of hierarchical systems with potentially very high multiplicity that contains ten objects. Their multiplicity does not exceed 12, and we discuss a number of ways to explain the lack of extremely high multiplicity systems.
关键词：Keywordsbinaries: generalbinaries: visual