NGC 4656和NGC 4657
NGC 4656/57 | |
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NGC 4656/7. Credit: Scott Anttila. | |
观测资料(J2000 曆元) | |
星座 | 獵犬座[1] |
赤经 | 12h 43m 57.7s[2] |
赤纬 | +32° 10′ 05″[2] |
紅移 | 646 km/s[2] |
视星等 (V) | 11.0[2] |
特征 | |
类型 | SB(s)m pec[2] |
大小 | 78,500 ly |
角直徑 (V) | 12.9′[2] |
其他 | similar to SMC |
其他名称 | |
UGC 7907[2]、PGC 42863[2]、曲棍球棒星系、撬棍星系 | |
參見:星系、星系列表 |
NGC 4656/57位於獵犬座,距離地球3,000萬光年,是邊緣高度翹曲[3]的棒旋星系[4]。這個星系有時被稱為「曲棍球棒星系」或「撬棍星系」。其不尋常的形狀被認為是由於NGC 4656、NGC 4631和NGC 4627之間的相互作用造成的[5]。這些星系屬於NGC 4631星系群。
2005年3月21日,在NGC 4656/57中發現了一個“超級爆發”中的亮藍變星[6]。
相關條目
參考資料
- ^ R. W. Sinnott (编). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press. 1988. ISBN 978-0-933346-51-2.
- ^ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 NASA/IPAC Extragalactic Database. Results for NGC 4656. [2006-04-30].
- ^ [email protected]. Hockey Stick Galaxy NGC 4656. www.noirlab.edu. [2023-12-02] (英语).
- ^ [email protected]. The Hockey Stick Galaxy. www.spacetelescope.org. [2023-12-02] (英语).
- ^ The Hockey Stick Galaxy. www.spacetelescope.org. [31 July 2017].
- ^ Smith, Nathan; Li, Weidong; Silverman, Jeffrey M.; Ganeshalingam, Mohan; Filippenko, Alexei V. Luminous blue variable eruptions and related transients: diversity of progenitors and outburst properties: LBV diversity. Monthly Notices of the Royal Astronomical Society. 2011-07-21, 415 (1): 773–810. arXiv:1010.3718 . doi:10.1111/j.1365-2966.2011.18763.x (英语).
外部連結
维基共享资源上的相关多媒体资源:NGC 4656和NGC 4657
- Hockey Stick (NGC 4656)
- SEDS – NGC 4656
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- 论
- 编
NGC天體表 4500-4999
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