纠错

错误：特朗普勒的分类法中第三个标准并不是金属丰度，指的是星数。

文献：Trumpler发表的文献。

Robert Julius Trumpler, 1930. Preliminary results on the distances, dimensions and space distribution of open star clusters. Lick Observatory Bulletin, No. 420, Vol. 14, pp. 154-188 [ADS: 1930LicOB.420..154T]