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DA白矮星的速度分布与质量的关系
Alternative TitleRelation of Velocity Distribution and Mass for DA White Dwarfs
龚小波1,2,3; 李立芳1,2
Source Publication天文学报(Acta Astronomica Sinica)
2017-01
Volume58Issue:1Pages:59-67
DOI10.15940/j.cnki.0001-5245.2017.01.005
ClassificationP144
Contribution Rank第1完成单位
Indexed ByCSCD ; 核心
Keyword恒星:白矮星 恒星:基本参数 恒星:演化
Abstract

白矮星是小质量与中等质量恒星演化的最终产物.在与自矮星有关的研究中,白矮星的质量是~个很重要的物理参数.对斯隆数字巡天(SDSS)中的DA白矮星样本进行了详细的、与速度分布相关的研究,希望从中寻找到速度分布与其质量的联系.根据白矮星的自行和光谱移动确定了每颗白矮星的切向速度和视向速度.白矮星速度随其质量的分布图支持单星演化形成的白矮星的质量越小其弥散速度就越大的结论.

Other Abstract

White dwarfs are the evolutionary endpoint of the low- and medium-mass stars. The masses of white dwarfs are often discussed. In this paper, we give an analysis about the velocity distribution of DA white dwarfs in the Sloan Digital Sky Survey (SDSS), and hope to find the relation between mass and velocity distribution of white dwarfs. We get the radial velocity and tangential velocity of every DA white dwarf through their proper motion and spectral shift. Through analyzing the velocity distributions of DA white dwarfs, we find that the small mass white dwarfs, which are produced from a single-star channel, have a relative large velocity dispersion.

Funding Project国家自然科学基金项目[11373063] ; 国家自然科学基金项目[11273053] ; 国家自然科学基金项目[11390374] ; 国家自然科学基金项目[11573062] ; 国家自然科学基金项目[11573061]
Funding Organization国家自然科学基金项目[11373063, 11273053, 11390374, 11573062, 11573061]
Language中文
Subject Area天文学 ; 恒星与银河系 ; 恒星形成与演化
MOST Discipline Catalogue理学 ; 理学::天文学
ISSN0001-5245
CSCD IDCSCD:5908600
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9941
Collection大样本恒星演化研究组
中国科学院天体结构与演化重点实验室
Affiliation1.中国科学院云南天文台,昆明650011
2.中国科学院天体结构与演化重点实验室,昆明650011
3.中国科学院大学,北京100049
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
龚小波,李立芳. DA白矮星的速度分布与质量的关系[J]. 天文学报(Acta Astronomica Sinica),2017,58(1):59-67.
APA 龚小波,&李立芳.(2017).DA白矮星的速度分布与质量的关系.天文学报(Acta Astronomica Sinica),58(1),59-67.
MLA 龚小波,et al."DA白矮星的速度分布与质量的关系".天文学报(Acta Astronomica Sinica) 58.1(2017):59-67.
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