We can also talk about the absolute magnitudes of objects like star clusters, galaxies, etc.
绝对星等的概念可推广至星团星系等。
The absolute magnitudes in I and K bands of 58 red clump giants are computed and the relation between them and the metallicity are also showed.
计算了共58颗红团簇巨星在I、K波段的绝对星等，讨论了它们与恒星铁丰度之间的关系。
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