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NGC 4656和NGC 4657:修订间差异

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{{Infobox Galaxy
{{Infobox Galaxy
| name = [[星雲和星團新總表|NGC]] 4656/7
| name = [[NGC天體表|NGC]] 4656/7
| image = [[Image:Hockeystick.jpg|300px]]
| image = Hockeystick.jpg
| image_size = 300px
| caption = NGC 4656/7。創建者:Scott Anttila.
| caption = NGC 4656/7. Credit: Scott Anttila.
| constellation name = [[獵犬座]]<ref name="sinnott">{{cite book
| constellation name = [[獵犬座]]<ref name="sinnott">{{cite book
| author=R. W. Sinnott, editor
| editor=R. W. Sinnott
| title= The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer
| title= The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer
| date=1988
| url=https://archive.org/details/ngc20000complete0000drey
| year=1988
| publisher=Sky Publishing Corporation and Cambridge University Press
| publisher=Sky Publishing Corporation and Cambridge University Press
| isbn=0-933-34651-4}}</ref>
| isbn=978-0-933346-51-2}}</ref>
| epoch = [[J2000]]
| epoch = [[J2000]]
| type = SB(s)m pec<ref name="ned">{{cite web
| type = SB(s)m pec<ref name="ned">{{cite web
第15行: 第15行:
| work=Results for NGC 4656
| work=Results for NGC 4656
| url=http://nedwww.ipac.caltech.edu/
| url=http://nedwww.ipac.caltech.edu/
| accessdate=2006-04-30
| access-date=2006-04-30}}</ref>
| archive-date=2011-05-14
| archive-url=https://web.archive.org/web/20110514100451/http://nedwww.ipac.caltech.edu/
| dead-url=no
}}</ref>
| ra = {{RA|12|43|57.7}}<ref name="ned"/>
| ra = {{RA|12|43|57.7}}<ref name="ned"/>
| dec = {{DEC|+32|10|05}}<ref name="ned"/>
| dec = {{DEC|+32|10|05}}<ref name="ned"/>
| dist_ly =
| dist_ly =
| z= 646 公里/<ref name="ned"/>
| z= 646 km/[[second|s]]<ref name="ned"/>
| appmag_v = 11.0<ref name="ned"/>
| appmag_v = 11.0<ref name="ned"/>
| size_v = 12′.9<ref name="ned"/>
| size_v = 12.9{{prime}}<ref name="ned"/>
| size = 78,500 ly
| notes = [[交互作用星系|交互作用星系對]]
| notes = similar to SMC
| names = [[Uppsala General Catalogue|UGC]] 7907,<ref name="ned" /> [[Principal Galaxies Catalogue|PGC]] 42863<ref name="ned" />
| names = [[烏普薩拉總目錄|UGC]] 7907<ref name="ned" />[[主要星系目錄|PGC]] 42863<ref name="ned" />、曲棍球棒星系、撬棍星系
}}
}}


'''NGC 4656/57'''位於[[獵犬座]],距離地球3,000萬光年,是邊緣高度翹曲<ref>{{Cite web |last=info@noirlab.edu |title=Hockey Stick Galaxy NGC 4656 |url=https://www.noirlab.edu/public/images/noao-ngc4656/ |access-date=2023-12-02 |website=www.noirlab.edu |language=en}}</ref>的[[棒旋星系]]<ref>{{Cite web |last=information@eso.org |title=The Hockey Stick Galaxy |url=https://www.spacetelescope.org/images/potw1731a/ |access-date=2023-12-02 |website=www.spacetelescope.org |language=en}}</ref>。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<ref>{{cite web|title=The Hockey Stick Galaxy|url=https://www.spacetelescope.org/images/potw1731a/|website=www.spacetelescope.org|access-date=31 July 2017}}</ref>。這些星系屬於{{link-en|NGC 4631星系群|NGC 4631 Group}}。
'''NGC 4656'''和'''NGC 4657'''是在[[獵犬座]]的一對[[交互作用星系]],這一對星系有時被稱為''曲棍球棒星系''。這兩個星系都是[[NGC 4631群]]的成員。

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]]<ref>{{Cite journal |last=Smith |first=Nathan |last2=Li |first2=Weidong |last3=Silverman |first3=Jeffrey M. |last4=Ganeshalingam |first4=Mohan |last5=Filippenko |first5=Alexei V. |date=2011-07-21 |title=Luminous blue variable eruptions and related transients: diversity of progenitors and outburst properties: LBV diversity |url=https://academic.oup.com/mnras/article-lookup/doi/10.1111/j.1365-2966.2011.18763.x |journal=Monthly Notices of the Royal Astronomical Society |language=en |volume=415 |issue=1 |pages=773–810 |doi=10.1111/j.1365-2966.2011.18763.x|arxiv=1010.3718 }}</ref>。

[[File:The Hockey Stick Galaxy.jpg|thumb|哈伯太空望遠鏡拍攝的星系特寫影像。]]


== 相關條目 ==
== 相關條目 ==
* [[觸鬚星系]]
* [[觸鬚星系]]

== 外部連結 ==
* [http://www.daviddarling.info/encyclopedia/H/Hockey_Stick.html Hockey Stick (NGC 4656)]{{Wayback|url=http://www.daviddarling.info/encyclopedia/H/Hockey_Stick.html |date=20111016230203 }}


== 參考資料 ==
== 參考資料 ==
{{reflist}}
{{reflist}}


== 外部連結 ==
[[Category:交互作用星系]]
{{commons category}}
* [http://www.daviddarling.info/encyclopedia/H/Hockey_Stick.html Hockey Stick (NGC 4656)]
* [http://messier.seds.org/xtra/ngc/n4656.html SEDS] – NGC 4656

{{獵犬座}}

{{DEFAULTSORT:NGC 4656 and NGC 4657}}
[[Category:獵犬座]]
[[Category:NGC 4631群]]
[[Category:NGC 4631群]]
[[Category:獵犬座NGC天體|4656]]
[[Category:NGC天體|4656]]
[[Category:UGC天體|07907]]
[[Category:UGC天體|07907]]
[[Category:PGC天體|42863]]
[[Category:PGC天體|42863]]
[[Category:交互作用星系]]
[[Category:棒旋星系]]





2024年8月25日 (日) 15:00的版本

NGC 4656/7
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]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 4656NGC 4631NGC 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]

哈伯太空望遠鏡拍攝的星系特寫影像。

相關條目

參考資料

  1. ^ 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. ^ 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]. 
  3. ^ info@noirlab.edu. Hockey Stick Galaxy NGC 4656. www.noirlab.edu. [2023-12-02] (英语). 
  4. ^ information@eso.org. The Hockey Stick Galaxy. www.spacetelescope.org. [2023-12-02] (英语). 
  5. ^ The Hockey Stick Galaxy. www.spacetelescope.org. [31 July 2017]. 
  6. ^ 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可免费查阅. doi:10.1111/j.1365-2966.2011.18763.x (英语). 

外部連結