For faster navigation, this Iframe is preloading the Wikiwand page for M52.

M52

M 52
创建者:2MASS/NASA
观测资料 (J2000 历元)
星座仙后座
赤经23h 24m 48.0s[1]
赤纬+61° 35′ 36″[1]
距离4.6 kly(1.4 kpc[1]
视星等 (V)5.0
视大小 (V)13.0′[2]
物理特征
质量1,200 M[3] M
半径9.5 ly[2]
估计年龄158.5 Myr[1]
其他特征NGC 7654、Cr 455, C 2322+613, OCl 260[4]
相关条目:疏散星团NGC天体表

M52梅西耶52,也称为NGC 7654,是在北天仙后座的一个疏散星团。它是查尔斯·梅西耶在1774年9月7日发现的[2]。在地球上,使用双筒望远镜就可以看见这个星团。这个星团的南半部受到消光的影响非常明显[5]

罗伯特·朱利斯·特朗普勒英语Robert Julius Trumpler在他的特朗普勒分类法将M52分类为 II2r,表示星团低度向中心集中,亮星和暗星的数量相当,而且星数众多(超过100颗)[6]。后来,改分为I2r,表示向中心高度集中,有密集的核心[5]。 这个星团的核心半径是2.97 ± 0.46 ly(0.91 ± 0.14 pc),潮汐半径为42.7 ± 7.2 ly(13.1 ± 2.2 pc)[3]。估计年龄约1.585亿年[1],质量约1,200 M.[3]

视星等+8.3的超巨星BD+ 60°2532可能是M52的成员[3]。 其它的成员包括18颗慢脉动B型变星T,其中一颗是盾牌座δ型变星,3颗是剑鱼座γ型变星 [7];可能还有3颗Be星 [8]。星团的核心缺乏星际物质,这可能是星团早期历史有超新星爆炸的结果[5]

参考资料

  1. ^ 1.0 1.1 1.2 1.3 1.4 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, arXiv:0909.3737可免费查阅, doi:10.1111/j.1365-2966.2009.15416.x. 
  2. ^ 2.0 2.1 2.2 Adam, Len, Imaging the Messier Objects Remotely from Your Laptop, The Patrick Moore Practical Astronomy Series, Springer: 241, 2018, Bibcode:2018imor.book.....A, ISBN 978-3319653853 
  3. ^ 3.0 3.1 3.2 3.3 Bonatto, C.; Bica, E., Methods for improving open cluster fundamental parameters applied to M 52 and NGC 3960, Astronomy and Astrophysics, September 2006, 455 (3): 931–942, Bibcode:2006A&A...455..931B, arXiv:astro-ph/0608022可免费查阅, doi:10.1051/0004-6361:20065315 
  4. ^ [ M 52] 请检查|url=值 (帮助). SIMBAD. 斯特拉斯堡天文资料中心. 
  5. ^ 5.0 5.1 5.2 Pandey, A. K.; et al, NGC 7654: An interesting cluster to study star formation history, Astronomy and Astrophysics, August 2001, 374 (2): 504–522, Bibcode:2001A&A...374..504P, doi:10.1051/0004-6361:20010642可免费查阅. 
  6. ^ Trumpler, Robert Julius, Preliminary results on the distances, dimensions and space distribution of open star clusters, Lick Observatory Bulletin, 1930, 420: 154–188, Bibcode:1930LicOB..14..154T, doi:10.5479/ADS/bib/1930LicOB.14.154T可免费查阅. 
  7. ^ Luo, Y. P.; et al, Discovery of 14 New Slowly Pulsating B Stars in the Open Cluster NGC 7654, The Astrophysical Journal Letters, February 2012, 746 (1): 5, Bibcode:2012ApJ...746L...7L, doi:10.1088/2041-8205/746/1/L7, L7. 
  8. ^ Bond, Howard E., Be Stars in the Galactic Cluster M 52, Publications of the Astronomical Society of the Pacific, August 1973, 85 (506): 405, Bibcode:1973PASP...85..405B, doi:10.1086/129477可免费查阅. 

外部链接


{{bottomLinkPreText}} {{bottomLinkText}}
M52
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?