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NGC 6820和NGC 6823

发射星云NGC 6820 与疏散星团NGC 6823
星云
NGC 6820/NGC 6823 -礼貌猎人威尔逊
观测资料: J2000.0 epoch
赤经19h 42m 27.92s[1]
赤纬+23° 05′ 14.7″[1]
距离6,000 ly[2] 光年
视尺度(V)40
星座狐狸座
名称星云(NGC 6820,Sh2-86)
相关条目:星云列表

NGC 6820和NGC 6823是在狐狸座内包围着疏散星团 NGC 6823的一个发射星云,它的位置靠近M 27,也就是哑铃星云。这个星云也称为Sh2-86。

最显著的特征是在星云的东侧,靠近疏散星团NGC 6823西边,突起像是树干支柱的尘埃和气体。疏散星团的中心主要是许多年轻、明亮,年龄大约200万岁的蓝色恒星。星团的外侧贴近发射星云NGC 6820的支柱,包含星团中更为年轻的恒星。巨大的支柱可能是周围的气体和尘埃,受到邻近恒星的辐射推挤和侵蚀而堆砌成的。在星云中也可以看见气体和尘埃聚集成显著的暗球,数量多如巨蛇座鹰星云人马座礁湖星云

疏散星团NGC 6823的直径大约是50光年,距离大约6000光年[2],构成狐狸座OB1星协的核心[3]

参考资料

  1. ^ 1.0 1.1 SIMBAD Astronomical Database. Results for NGC 6820. [2008-07-03]. (原始内容存档于2019-05-01). 
  2. ^ 2.0 2.1 Nemiroff, R.; Bonnell, J. (编). Astronomy Picture of the Day. NASA https://apod.nasa.gov/apod/ap041004.html. 4 October 2004 [2008-07-03].  缺少或|title=为空 (帮助)
  3. ^ Billot, N.; Noriega-Crespo, A.; Carey, S.; Guieu, S.; Shenoy, S.; Paladini, R.; Latter, W. Young Stellar Objects and Triggered Star Formation in the Vulpecula Ob Association. The Astrophysical Journal. 2010, 712 (2): 797. Bibcode:2010ApJ...712..797B. arXiv:1003.0866可免费查阅. doi:10.1088/0004-637X/712/2/797. 

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NGC 6820和NGC 6823
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