NGC 2232
NGC 2232在天图的位置
NGC 2232 是一个位于天球赤道 附近的麒麟座 ,以麒麟-10为中心的一个明亮的疏散星团 。[ 3] 它在猎户座大星云 附近的古爾德帶 ,[ 6] 距太阳约1060光年。[ 2] 该星系的平均徑向速度 为7004266000000000000♠ 26.6± 0.77 km/s 。[ 7] NGC 2232 是距离太阳最近的疏散星团之一,是一个研究年轻恒星向主序星 过渡的一个潜在目标之一。[ 8]
星团的角半径为6998104719755119660♠ 36′ ,核心角半径为6997209439510239320♠ 7.2′ 。是一个由20个集中恒星组成的稀疏簇[ 2] 。它被认为是一个超级太阳星团,该星团的恒星的铁含量通常比太阳更高,金屬量 为6999220000000000000♠ 0.22± 0.09 或6999320000000000000♠ 0.32± 0.08 ,取决于所做的假设。[ 7] 至少四个恒星紅外過量 波长为8μm,为暖尘埃,其中HD 45435的波长超过24μm.,可能说明恒星处于早期演变阶段。[ 6] 该星团中只有一颗恒星是特殊恆星 。[ 9]
参考
^ 1.0 1.1 Wu, Zhen-Yu; et al, The orbits of open clusters in the Galaxy, Monthly Notices of the Royal Astronomical Society , November 2009, 399 (4): 2146–2164, Bibcode:2009MNRAS.399.2146W , S2CID 6066790 , arXiv:0909.3737 , doi:10.1111/j.1365-2966.2009.15416.x .
^ 2.0 2.1 2.2 2.3 Kharchenko, N. V.; et al, Astrophysical parameters of Galactic open clusters, Astronomy and Astrophysics, 2005, 438 (3): 1163–1173, Bibcode:2005A&A...438.1163K , S2CID 9079873 , arXiv:astro-ph/0501674 , doi:10.1051/0004-6361:20042523 .
^ 3.0 3.1 3.2 Dunlop, Storm. Atlas of the Night Sky . Collins . 2005. ISBN 978-0-00-717223-8 .
^ 4.0 4.1 Finlay, Warren H., Concise Catalog of Deep-sky Objects, The Patrick Moore Practical Astronomy Series 2nd, Springer Science & Business Media: 188, 2014, ISBN 978-3-319-03169-9 .
^ NGC 2232 . SIMBAD . 斯特拉斯堡天文資料中心 . [2020-04-12 ] .
^ 6.0 6.1 Currie, Thayne; et al, A Spitzer Study of Debris Disks in the Young Nearby Cluster NGC 2232: Icy Planets Are Common around ~1.5-3 M☉ Stars, The Astrophysical Journal, November 2008, 688 (1): 597–615, Bibcode:2008ApJ...688..597C , S2CID 28733060 , arXiv:0807.2056 , doi:10.1086/591842 .
^ 7.0 7.1 Monroe, TalaWanda R.; Pilachowski, Catherine A., Metallicities of Young Open Clusters. I. NGC 7160 and NGC 2232, The Astronomical Journal, December 2010, 140 (6): 2109–2123, Bibcode:2010AJ....140.2109M , S2CID 119241382 , arXiv:1010.0739 , doi:10.1088/0004-6256/140/6/2109 .
^ Orban, Chris; Patten, Brian, Late-Type Membership of the Open Cluster NGC 2232 , Greenbelt, MD, United States: NASA Goddard Space Flight Center, January 1, 2004 [2020-04-13 ] .
^ Jenkner, H.; Maitzen, H. M., Photoelectric search for CP2-stars in open clusters. X. NGC 2232, NGC2343, CR 140, and TR 10., Astronomy and Astrophysics, Supplemental Series, November 1987, 71 : 255–261, Bibcode:1987A&AS...71..255J .
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