查询词典 globular cluster

Omega Centauri is also the brightest globular cluster, at apparent visual magnitude 3.9 it is visible to southern observers with the unaided eye.

半人马座欧米伽星团也是最明亮的球状星团，其亮度大小显示为3.9星等，在南半球的观察者用肉眼就可以欣赏它了。

Caption:: A sixth magnitude globular cluster in the constellation Canes Venatici, this ball of 500,000 stars is approximately 160 light years across and 100,000 light years from Earth.

这个星团叫 M3，是梅西尔星表的第3个成员，它位於猎犬座，是一个球状星团。

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.

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。

This is a common sentiment among scientists. But there's a counterargument: There are a lot more ways to be dead than to be alive in this universe. In fact, when you look at all those stars in this globular cluster, you're looking at a patch of sky where life may never have taken hold.

科学家普遍有这种观点，但也有反方说法，在宇宙中比起活著还有更多结束生命的方法，事实上，当你望向这群球状星团里的所有星星，你看的是天际中一条生命无法停留的小路。

You have probably seen many great images of the globular cluster M13, but I wonder if you have ever seen one with such rich colors as this one Bob Fera took?

您也许已经见过许多非常棒的M13的照片了，但我还是觉得是否真的见过象这张Bob Ferad的照片一样色彩丰富的？

This thesis is concerned with space·-based high--resolution opticalimaging of globular cluster cores,and the subsequent application ofimage—restoration and crowded—field photometry techniques,thus we maygain an improved understanding of the nature of the dynamics of globularclusters and the galax.

本文主要利用哈勃太空望远镜的行星广角照相机(WFPC2)对NGC6656的多历元、多波段观测资料来开展对该星团的高精度测光和动力学研究。

Like a whirl of shiny flakes sparkling in a snow globe, Hubble catches an instantaneous glimpse of many hundreds of thousands of stars moving about in the globular cluster M13, one of the brightest and best-known globular clusters in the northern sky.

据国外媒体报道，美国宇航局哈勃太空望远镜拍到北部天空中最明亮最有名的球形星团M13，恰似一个天上"雪球"，里面有无数恒星在运动，如同连串的"雪片"在闪烁。

Of the over 200 globular star clusters that orbit the center of our Milky Way Galaxy, 47 Tucanae is the second brightest globular cluster.

在环绕我们银河系中心的超过200的球状星族中，杜鹃座47的亮度位居第二，仅次于半人马座欧密伽。

Explanation: M4 is a globular cluster visible in dark skies about one degree west of the bright star Antares in the constellation Scorpius. M4 is perhaps the closest globular cluster at 7000 light years, meaning that we see M4 only as it was 7000 years ago, near the dawn of recorded human history. Although containing hundreds of thousands of stars and spanning over 50 light-years, M4 is one of the smallest and sparsest globular clusters known. A particularly unusual aspect for a globular cluster is M4's central bar of stars.

M4是一个肉眼可见的球状星团，位于天蝎座心宿二的东面约一度位置。M4可能是最靠近我们的球状星团距离约7000光年，这意味着我们看到的是7000年以前的M4，即人类历史有文字记载的开始阶段，它跨越50光年包含有数10万颗恒星。M4是已知在尺度及包含恒星数量上最小的球状星团。M4独特之处是它中心的棒状结构。

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。

Graf, without question, is the greatest women's player in history.

格拉芙，现在，毫无疑问是女子网坛历史上最伟大的选手。

If not, you will have to look around at all your important data.

如果没有，您将需要检查所有的重要数据。