YNAO OpenIR  > 双星与变星研究组
Alternative TitleObservational Investigations on Contact Binaries in Multiple-star Systems and Star Clusters
Source Publication天文学报(Acta Astronomica Sinica)
Contribution Rank第1完成单位
Indexed ByCSCD

大熊W型相接双星是两颗子星均充满并溢出各自洛希瓣、具有对流公共包层的双星系统。相接双星中存在各种各样的相互作用,给理论模型带来许多可变参量,对理论研究提出了挑战.上世纪六七十年代,经过激烈的争论,相接双星的对流公共包层模型得到公认,相接双星的热弛豫震荡模型、相接不连续模型及角动量损失理论相继被提出.然而,在过去的近40 yr中,理论研究似乎遇到了瓶颈.大量未知参量的共存,使相接双星的理论研究难以进一步开展.研究相接双星的聚星、星团环境,能为相接双星的形成和演化提供丰富的信息,因而是探索相接双星演化问题潜在的生长点.越来越多的观测证据表明,大量相接双星存在于聚星系统或者星团当中.作为母系统的聚星、星团为研究其中的相接双星提供了丰富的演化信息.本文针对这些重要天体系统中的相接双星进行了成员认证、测光观测、周期分析和基本物理参量求解等多项研究,同时对相接双星研究的现状做了简要概述.主要成果如下:

Other Abstract

The W UMa-type contact binaries are strongly interacting systems whose components both fill their critical Roche lobes and share a convective common envelope. The models of contact binaries are bottlenecked due to too many uncertain parameters. In the 1960s and 1970s, the common convective envelope model was accepted after several fierce controversies. And then, the thermal relaxation oscillation (TRO) model, the discontinuity model, and the angular momentum loss (AML) model appeared. However, in the past forty years, there lacked remarkable advance. The coexistence of many unknown parameters blocks the theoretical development of contact binaries. A study on the contact binaries in multiple star systems and star clusters, which could provide lots of information for their formation and evolution, may be a potential growing point for understanding these objects. More and more evidence shows that many of contact binaries are located in multiple star systems and star clusters. In this thesis, we observed and analyzed contact binaries in the forementioned systems. The observational and theoretical studies for contact binary are also summarized briefly. The results obtained are as follows:

Funding ProjectN/A
Funding OrganizationN/A
Subject Area天文学 ; 恒星与银河系 ; 恒星天文学
MOST Discipline Catalogue理学 ; 理学::天文学
Citation statistics
Document Type期刊论文
Affiliation中国科学院云南天文台, 昆明, 650011
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
刘亮. 聚星和星团中相接双星的观测与研究[J]. 天文学报(Acta Astronomica Sinica),2013,54(1):82-84.
APA 刘亮.(2013).聚星和星团中相接双星的观测与研究.天文学报(Acta Astronomica Sinica),54(1),82-84.
MLA 刘亮."聚星和星团中相接双星的观测与研究".天文学报(Acta Astronomica Sinica) 54.1(2013):82-84.
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