NGC 288
NGC 288是在玉夫座的一个球状星团。约翰·路易·埃米尔·德雷耳在1888年就描述了它的在视觉上的外观[7]。它位于星系NGC 253的东南方大约1.8°，银南极的北北东方37'，一颗9等星南南东方15'，在西南侧的恒星构成开放的半圆形[1]，使用双筒望远镜就可以看见[1]。它没有很集中，所以可以很容易分解出单独的恒星。较密集的核心大小约3'，松散且不规则的外围构成直径大约9'的环状[1]，周边的成员非常松散的向南方扩散，特别是西南方[1]。
| NGC 288 | |
|---|---|
 | |
| 观测数据(J2000 历元) | |
| 分类 | X[1] |
| 星座 | 玉夫座 |
| 赤经 | 00h 52m 45.24s[2] |
| 赤纬 | –26° 34′ 57.4″[2] |
| 距离 | 28.7 kly（8.8 kpc）[3] |
| 视星等 (V) | 9.37[4] |
| 视直径(V) | 13′.8[1] |
| 物理性质 | |
| Mass | 4.8×104[5] M☉ |
| 金属量 | –1.14[6] dex |
| 估计年龄 | 10.62 Gyr[6] |
| 其它名称 | Melotte 3[4] |
参考资料
编辑- ^ 1.0 1.1 1.2 1.3 1.4 1.5 Kepple, George Robert; Sanner, Glen W. The Night Sky Observer's Guide, Volume 2. Willmann-Bell, Inc. 1998: 365, 372. ISBN 0-943396-60-3.
- ^ 2.0 2.1 Goldsbury, Ryan; et al, The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters, The Astronomical Journal, December 2010, 140 (6): 1830–1837, Bibcode:2010AJ....140.1830G, arXiv:1008.2755
, doi:10.1088/0004-6256/140/6/1830.
- ^ Paust, Nathaniel E. Q.; et al, The ACS Survey of Galactic Globular Clusters. VIII. Effects of Environment on Globular Cluster Global Mass Functions, The Astronomical Journal, February 2010, 139 (2): 476–491, Bibcode:2010AJ....139..476P, doi:10.1088/0004-6256/139/2/476
- ^ 4.0 4.1 SIMBAD Astronomical Database. Results for extended name search on NGC 288. [2007-02-10].
- ^ Marks, Michael; Kroupa, Pavel, Initial conditions for globular clusters and assembly of the old globular cluster population of the Milky Way, Monthly Notices of the Royal Astronomical Society, August 2010, 406 (3): 2000–2012, Bibcode:2010MNRAS.406.2000M, arXiv:1004.2255 , doi:10.1111/j.1365-2966.2010.16813.x. Mass is from MPD on Table 1.
- ^ 6.0 6.1 Forbes, Duncan A.; Bridges, Terry, Accreted versus in situ Milky Way globular clusters, Monthly Notices of the Royal Astronomical Society, May 2010, 404 (3): 1203–1214, Bibcode:2010MNRAS.404.1203F, arXiv:1001.4289 , doi:10.1111/j.1365-2966.2010.16373.x.
- ^ Dreyer, J. L. E. A New General Catalogue of Nebulae and Clusters of Stars,being the Catalogue of the late Sir John F.W. Herschel, Bart., revised, corrected, and enlarged.. Memoirs of the Royal Astronomical Society. 1888, 49: 1–237. Bibcode:1888MmRAS..49....1D.
外部链接
编辑