[1]孙建楠,李静,罗志全.人马座星流研究进展[J].西华师范大学学报(自然科学版),2019,40(04):382-388.[doi:10.16246/j.issn.1673-5072.2019.04.010]
 SUN Jiannan,LI Jing,LUO Zhiquan.Research Progress of Sagittarius Stream[J].Journal of China West Normal University(Natural Sciences),2019,40(04):382-388.[doi:10.16246/j.issn.1673-5072.2019.04.010]
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人马座星流研究进展

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《西华师范大学学报(自然科学版)》[ISSN:1673-5072/CN:51-1699/N]

卷:
40
期数:
2019年04期
页码:
382-388
栏目:
出版日期:
2019-12-20

文章信息/Info

Title:

Research Progress of Sagittarius Stream

作者:

孙建楠李静罗志全

(西华师范大学 物理与空间科学学院,四川 南充637009)

Author(s):

SUN JiannanLI JingLUO Zhiquan

(College of Physics and Space Science,China West Normal University,Nanchong Sichuan 637009,China)

关键词:

运动学金属丰度人马座星流视向速度

Keywords:

kinematicsmetallicitySagittarius streamradial-velocity

分类号:
P145.9
DOI:
10.16246/j.issn.1673-5072.2019.04.010
文献标志码:
A
摘要:

人马座星流是探索星系天文学问题的一个重要工具,对于银晕的研究具有重要意义。我们采用文献调查法对人马座星流的研究现状做了调查,总结了人马座星流的研究历史和基本结构,还找出了人马座星流早期研究情况的简图。其次,总结了人马座星流核心的天空位置、金属丰度、速度等参数,总结了人马座星流的导臂和曳臂与早期研究中天空位置的对比,从而给出了更准确的天空位置,还给出了星流导臂和曳臂与核心金属丰度的对比,从而得出核心与导臂和曳臂的一些参数是不同的结论。我们还总结整理了人马座星流的三维速度分布情况。关于化学演化的部分,文章中总结了α元素的分布情况。

Abstract:

As the most prominent and widely studied stream in the Milky Way,Sagittarius stream has been proved to be an important tool for exploring galactic astronomy.It is of great significance for the study of Galactic halo.Firstly,the method of literature investigation is employed to investigate the current research situation of Sagittarius stream,summarize its research history and basic structure,and find out the sketch of the early research situation.Secondly,the paper summarizes the position,metallicity,velocity and other parameters of the core of Sagittarius stream and compares the leading arm and the trailing arm of Sagittarius stream and the position in the early research.A more accurate position and a comparison of metal abundance between the leading arm and the trailing arm and the core are also given.It is concluded that some parameters of the core and the leading arm and the trailing arm are different.In addition,the distribution of the three-dimensional velocity of Sagittarius stream is  summarized.In the part of chemical evolution,the distribution of alpha elements is summarized.

相似文献/References:

[1]唐 棋,刘门全.矮椭球星系Sculptor中Co的分布研究[J].西华师范大学学报(自然科学版),2018,39(02):180.
 TANG Qi,LIU Menquan.A Research of Cobalt Distribution in the Local Dwarf Spheroidal Sculptor[J].Journal of China West Normal University(Natural Sciences),2018,39(04):180.

备注/Memo

备注/Memo:

收稿日期:2019-03-25
项目基金:国家自然科学基金项目(U1331121)
作者简介:孙建楠(1994—),女,河北承德人,硕士研究生,主要从事星流方面的研究。
通信作者:罗志全(1962—),男,四川眉山人,博士,教授,主要从事银河系结构方面的研究。E-mail:nczqluo@126.com

更新日期/Last Update: 2019-12-25