恒星

At first glance it does not seem that a few black lines on a photographic plate can get us very far in understanding the stars.

乍看起来，似乎看不出照相底版上的几条黑线能给我们多少关于恒星的知识。

Most galaxies abound with interstellar gas and dust, the detritus of countless generations of stars.

绝大多数星系有着丰富的星际气体和尘埃，这些都是无数代恒星散落下来的物质材料。

In stellar spectra, the H - epsilon line ( transition 7-2) is often mixed in with another absorption line caused by ionized

在恒星光谱中，H -ε线(7跃迁至2)经常会与其他的吸收谱线混合，天文学家都知道电离的

Each boy is all fixed star originally.

恒星 每一个男孩原本都是恒星。

This fixed star is a red and short star, this be a kind of fixed star with lower surface temperature, it shoot dark and weak red light, life span ratio the sun long.The Earth neighborhood about 80% fixed star be an all red and short star, this time detection will cause as to it's planet of research.

这个最近的一个是红色的，短期明星，这是一种与表面温度较低的恒星，它拍摄暗弱的红光，寿命长，朴拙贴身太阳比地球附近大约80％的恒星是一个红色的和短期的所有明星，这次检测将导致以它的行星的研究。

Just"new Earth" of the detection of mother fixed star Gliese 581 distance the Earth only have 20.5 light year, is leave the Earth recent of 100 one of the fixed stars.

只是&地球母亲的检测&葛利斯581恒星的距离地球只有20.5光年，是离开地球100恒星固定行星。

The evolution of fixed star having something to do with nuclear reaction, the star generally loses partial mass in ...

恒星的演化与核反应有关，演化到晚期的恒星一般要损失一部分质量，然后坍缩成致密星。

Actually a composite of 300 consecutive 1-minute exposures, the image nicely shows stars near the celestial equator tracing nearly straight lines in projection, while stars north and south of the equator, respectively, appear to circle the north and south celestial poles .

上图实际上是一300幅连续1分钟抓拍的合成图像，显示出了接近天赤道附近的恒星轨迹投影近乎直线，而天赤道南北的恒星轨迹，分别显示为环向南部和北部天极的弧形。

Plates of globular cluster M3, taken with the 40cm refractor at Sheshan station of Shanghai Astronomical Observatory, are used by this work. The difference of epoch of these plates is up to 81years. The positions and absolute proper motions of 24 stars in ACT catalogue, which links with the Hipparcos Catalogue based on the International Celestial Reference System, are used as the reference frame. Using the central overlapping principle, the absolute proper motions of 534 stars in the region of about 100'×100' around the cluster are determined. After the membership determination of the stars which based on the data of proper motions, average absolute proper motion components for the cluster of -0.3±0.3 mas/yr in R.A.

本文使用上海天文台佘山40厘米折射望远镜拍摄的14张最长时间跨度为81年的球状星团M3底片的PDS扫描结果，使用与 Hipparcos星表相联系的基于国际大球惯性参考系的ACT星表中的 24颗恒星的位置和绝对自行为参考架，用中心重叠法进行天体测量归算，得到了这个星团中心附近100'×100'天区内534颗恒星的位置和绝对自行，并利用这些自行对成员概率进行了估算，得到这个星团的赤经方向绝对自行为- 0.3±0.3mas/yr，赤纬方向绝对自行为-3.1±0.3mas／yr。

The bright star near the top of NGC 7049 is an unrelated foreground star in our own Galaxy.

在NGC 7049上方的那颗明亮的恒星是一颗和NGC 7049无关的，来自于我们银河系的前景恒星。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。