球状星团

球状星团M3绝对自行的测定对其轨道计算结果的影响

The effect of absolute proper motion determinations of the globular cluster m3 on calculations of its orbit

球状星团NGC4147基于Hipparcos系统的绝对自行

Absolute proper motion of globular cluster NGC 4147 on Hipparcos system

选用银河系中29个累积光谱型为F型的球状星团样本。

The 29 F globular clusters in the galaxy are selected as samples .

银河系球状星团轨道参数分布的MonteCarlo模拟

Monte Carlo Simulation of Distribution of Orbital Parameters for Globular Clusters in the Galaxy

银河系中球状星团的空间分布、运动轨道及MonteCarlo模拟

Space Distribution , Motional Orbits and Monte Carlo Simulation of Globular Clusters in the Galaxy

球状星团M3的绝对自行测定及其空间运动

Measurements of the absolute proper motions of M3 and its space motion

最后，对3个样本球状星团的观测数据进行MonteCarlo模拟，并用于计算它们的轨道参数，以及讨论轨道参数的分布形态与模拟观测数据和不同引力势模型之间的关系。

The Monte Carlo Simulations for Orbital Parameters of Globular Clusters The relationship between the distribution morphologies of the orbital parameters and the initial observational date as well as the different galactic gravitational potential models are discussed .

M31中球状星团的双星族合成研究

Study on Binary Stellar Populations of Globular Clusters in M31

球状星团的金属丰度分布，以及空间分布、运动性质与金属丰度的相关性，提供了球状星团形成过程的信息。除Pb以外，各种重金属含量相关性显著，表明它们有相似的来源。

Observations show that there are tight relations between the distribution and kinetics of GC with their heavy element abundances , which give information on their formation process . The sources of heavy metals are similar except for element Pb .

大部分椭圆星系所拥有的球状星团，不论是数量还是体型都超过NGC1316。

Most elliptical galaxies have more and brighter globular clusters than NGC1316 .

这种方法最初是利用元素对Th/Nd来确定G矮星的年龄，近年来开始利用元素对Th/Eu和U/Th来确定晕族场星和球状星团内恒星的年龄。

At first , this age-dating approach was used to estimate the age of G-dwarf stars with Th / Nd chronometry . Recently , it has been used to evaluate the age of halo field stars and globular cluster stars with the Th / Eu and U / Th chronometers .

有一种假说认为，这些球状星团是更早以前被NGC1316吞并的星系所遗留下来的幸存者。

One hypothesis is that these globulars survive from an even earlier galaxy that was subsumed into NGC1316 .

由于外形酷似草帽而得名的“草帽星系”编号为M104，它拥有显著的尘埃带，还有恒星和球状星团组成的明亮星系晕。

Named the Sombrero Galaxy for its hat-like resemblance , M104 features a prominent dust lane and a bright halo of stars and globular clusters .

但在20世纪中叶，天文学家瓦尔特·巴德（WalterBaade）注意到，该星系的古老星团比如它的核心星团或球状星团中的恒星年代更为久远，金属元素更少。

In the middle of the 20th century , however , the astronomer Walter Baade noticed that the stars in older parts of the galaxy , like its core or globular clusters , are older and have fewer metals .

球状星团NGC4147的绝对自行和颜色星等图

Absolute proper motions and colour-magnitude diagrams of the globular cluster NGC 4147

在星系和球状星团之间没有任何不可逾越的鸿沟。

There is no absolutely sharp cutoff distinguishing galaxies from globular clusters .

在这个问题上球状星团的研究最富有指导意义。

For this purpose the study of globular clusters is most instructive .

称作球状星团的小型恒星团体经常环绕在旋涡星系周围。

Smaller groups of stars called globular clusters often surround spiral galaxies .

一个典型的球状星团包含1百万恒星。

A typical globular cluster has about 1 million stars .

能克服上述不利情况的球状星团，有何特异之处？

What is it about globulars that overcomes these odds ?

球状星团轨道参数分布的统计模拟

The Monte Carlo Simulations for Orbital Parameters of Globular Clusters

球状星团NGC4147基于依巴谷系统的自行和空间运动

The proper and space motions of globular cluster NGC 4147 on Hipparcos system

对许多球状星团进行研究之后，使我们得到一些重要信息。

A study of many globular clusters gives another important bit of information .

也许在条件适当时，球状星团便会不断地形成。

Maybe globulars go on forming whenever conditions permit .

球状星团的形成与演化（Ⅰ）：观测特征

Formation and Evolution of Globular Clusters (ⅰ): Observational Properties

好比蜂群内的蜜蜂那般，球状星团内的恒星运行在不断变化的轨道之上。

Like bees in a swarm , these stars move on ever changing orbits .

球状星团的性质和演化（Ⅱ）：球状星团的动力学和形成过程

Feature and Evolution of Globular Clusters (ⅱ): The Formation and Dynamical Evolution of GC

球状星团的金属丰度特征与其恒星形成史

Metallicity and Star Formation History of Globular Clusters

HUGC-1指的是“超高速球状星团1号”。

HVGC-1 stands for hypervelocity globular cluster 1 .

这项发现确认了星系融合过程与球状星团形成之间的关联。

This finding corroborates the link between the merger process and the formation of globulars .