[1]高新华,徐守坤,顾晓清,等.球状星团M4的动力学质量[J].常州大学学报(自然科学版),2017,(06):92-96.[doi:10.3969/j.issn.2095-0411.2017.06.013]
　GAO Xinhua,XU Shoukun,GU Xiaoqing,et al.Dynamical Mass of the Globular Cluster M4[J].Journal of Changzhou University(Natural Science Edition),2017,(06):92-96.[doi:10.3969/j.issn.2095-0411.2017.06.013]
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球状星团M4的动力学质量()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2017年06期
页码:
92-96
栏目:
其他
出版日期:
2017-12-10

文章信息/Info

Title:
Dynamical Mass of the Globular Cluster M4
作者:
高新华; 徐守坤; 顾晓清;  石 林; 李 宁
常州大学 信息科学与工程学院,江苏 常州 213164
Author(s):
GAO Xinhua;  XU Shoukun;  GU Xiaoqing;  SHI Lin;  LI Ning
School of Information Science and Engineering, Changzhou University, Changzhou 213164, China
关键词:
球状星团;  M4;  视向速度;  位力定理
Keywords:
globular cluster;  M4;  radial velocity;  the virial theorem
分类号:
P 154
DOI:
10.3969/j.issn.2095-0411.2017.06.013
文献标志码:
A
摘要:
M4(NGC 6121)是离太阳最近的一个球状星团,是研究各种天体物理问题的重要实验室。质量是球状星团的重要物理量,对于研究星团的动力学演化历史有重要意义。由于球状星团中有大量不可见物质(白矮星、中子星、黑洞),给质量的估算带来一定麻烦,本文基于M4中851颗单星成员的高精度视向速度数据分析了星团的内禀速度弥散度,再根据位力定理计算出M4的动力学质量为8.59×104 M⊙,文中的动力学质量已经包含了不可见物质的质量。
Abstract:
M4(NGC 6121)is the nearest globular cluster, which is an important labortory for studying many problems in astrophysics. Mass is an important parameter for globular clusters, which can be used to analyze the dynamical evolution of globular clusters. The mass estimation of a globular cluster usually suffers from a large amount of invisible matters such as white drawfs, neutron stars and black holes. This paper presents an estimate for the dynamical mass of M4 based on high-precision radial velocities and the virial theorem. The cluster dynamical mass is determined to be 8.59×104 M⊙based on 851 single stars, which has included the mass of invisible matters.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-03-21。
基金项目:国家自然科学基金资助项目(11403004)。
作者简介:高新华(1979—),男,江苏常州人,博士,讲师,主要从事天体物理学研究。E-mail: xhgao@cczu.edu.cn
更新日期/Last Update: 1900-01-01