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NGC 2516

NGC 2516 钻石星团
观测数据 (J2000.0 历元)
分类VII
赤经7h 58m 20s
赤纬−60° 52′
距离1,300光年 ()
视星等 (V)3.8
视直径 (V)30.0″
物理性质
质量105 to 106 M
VHB14.2
其他名称(标示)NGC 2516
相关条目:疏散星团疏散星团列表

NGC 2516钻石星团尼可拉·路易·拉卡伊于1751-52年间在南天船底座发现的疏散星团

由于这些恒星有很高的清晰度,因此被称为钻石星团。这个星团本身在黑暗的夜空中用裸眼就能看见,但是使用双筒望远镜的效果会更好。钻石星团包含两颗美丽的5等红巨星和三对双星,但至少需要一只小的望远镜才能分辨这些双星。

NGC 2516和最近在蛇夫座附近发现的星团Mamajek 2有相似的年龄和金属量。最近,E. Jilinksi和合作者提出了动力学上的证据,认为这两个恒星集团都是在1亿3,500万年前经由相同的恒星产生过程形成的[1]

参考资料

  1. ^ Jilinski, E., Ortega, V.G., de la Reza, R., Drake, N.A., and Bazzanella, B. Dynamical Evolution and Spectral Characteristics of the Stellar Group Mamajek 2. Astrophysical Journal. 2009, 691: 212 [2011-01-28]. doi:10.1088/0004-637X/691/1/212. (原始内容存档于2019-12-07). 

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NGC 2516
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