NGC 188：新总表中的旧星团
(原标题: NGC 188: Old Cluster in the New General Catalog)
2026-05-13
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星团和星云的《新总目录》其实并不新鲜。事实上，它是在1888年出版的——j·l·e·德雷尔将天文学家威廉、卡罗琳和约翰·赫歇尔以及其他人的工作整合成一个有用的、完整的天文发现和测量目录。德雷尔的工作在很大程度上是成功的，并且在今天仍然很重要，因为这个著名的目录继续把它的“NGC”借给明亮的星团、星系和星云。以被称为NGC 188的星团为例（NGC汇编中的编号为188）。它位于距离我们6000光年远的北方仙王座，代表着一个星系或疏散星团。ngc188的年龄约为70亿年，对于一个疏散星团来说已经很老了。在这张色彩斑斓的深空图中，它古老的、进化的红巨星呈现出淡黄的色调。NGC 188在现代深空天体汇编中也享有考德威尔1的称号。这个古老的恒星群位于银河系的平面之上，在地球的北天极方向上，被一些人称为北极星星团。
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The New General Catalog of star clusters and nebulae really isn't so new. In fact, it was published in 1888 - an effort by J. L. E. Dreyer to consolidate the work of astronomers William, Caroline, and John Herschel along with others into a useful single, complete catalog of astronomical discoveries and measurements. Dreyer's work was largely successful and is still important today, as this famous catalog continues to lend its "NGC" to bright clusters, galaxies, and nebulae. Take for example the star cluster known as NGC 188 (item number 188 in the NGC compilation). It lies about 6,000 light-years distant in the northern constellation Cepheus and represents a galactic or open star cluster. With an age of about 7 billion years, NGC 188 is old for an open cluster. Its old, evolved red giant stars have yellowish hues in this colorful, deep sky view. NGC 188 also enjoys the designation Caldwell 1 in a modern compilation of deep sky objects. Located well above the plane of the Milky Way and seen in the direction of planet Earth's north celestial pole, the ancient stellar group is known to some as the Polarissima Cluster.
© Neven Krcmarek