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NGC 6522

NGC 6522
观测数据(J2000 历元)
星座人马座
赤经18h 03m 34.1s[1]
赤纬-30° 02′ 2.3″[1]
距离25.1 kly(7.7 kpc[2]
视星等 (V)8.3[3]
视直径(V)16.4'[3]
物理性质
Mass3.00×105[2] M
金属量–1.34[2] dex
估计年龄120亿年[4]
其它名称GCl 82、​C 1800-300[1]

NGC 6522人马座中的一个球状星团视星等为8.3,在天球中的直径为16.4弧分。 威廉·赫歇尔于1784年6月24日发现了它。它在天空中的位置是巴德窗区域的中心。

NGC 6522可能是银河系中最古老的星团,[5]年龄超过120亿年。 [6]

画廊

参考

  1. ^ 1.0 1.1 1.2 SIMBAD Astronomical Database. Results for NGC 6522. [2011-03-13]. (原始内容存档于2016-09-18). 
  2. ^ 2.0 2.1 2.2 Boyles, J.; et al, Young Radio Pulsars in Galactic Globular Clusters, The Astrophysical Journal, November 2011, 742 (1): 51, Bibcode:2011ApJ...742...51B, arXiv:1108.4402可免费查阅, doi:10.1088/0004-637X/742/1/51. 
  3. ^ 3.0 3.1 NGC 6522. [2020-09-23]. (原始内容存档于2021-02-26). 
  4. ^ Koleva, M.; et al, Spectroscopic ages and metallicities of stellar populations: validation of full spectrum fitting, Monthly Notices of the Royal Astronomical Society, April 2008, 385 (4): 1998–2010, Bibcode:2008MNRAS.385.1998K, arXiv:0801.0871可免费查阅, doi:10.1111/j.1365-2966.2008.12908.x 
  5. ^ "VLT-FLAMES Analysis of 8 giants in the Bulge Metal-poor Globular Cluster NGC 6522: Oldest Cluster in the Galaxy?" by B. Barbuy et al., 2009
  6. ^ "The universe's first stars were whirling dervishes"页面存档备份,存于互联网档案馆), New Scientist by David Shiga, 30 April 2011, p. 20.

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NGC 6522
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