NGC 4656和NGC 4657:修订间差异
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{{Infobox Galaxy |
{{Infobox Galaxy |
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| name = [[ |
| name = [[NGC天體表|NGC]] 4656/7 |
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| image = |
| image = Hockeystick.jpg |
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| image_size = 300px |
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| caption = NGC 4656/7 |
| caption = NGC 4656/7. Credit: Scott Anttila. |
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| constellation name = [[獵犬座]]<ref name="sinnott">{{cite book |
| constellation name = [[獵犬座]]<ref name="sinnott">{{cite book |
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| editor=R. W. Sinnott |
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| 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 |
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| url=https://archive.org/details/ngc20000complete0000drey |
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| publisher=Sky Publishing Corporation and Cambridge University Press |
| publisher=Sky Publishing Corporation and Cambridge University Press |
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| isbn=0- |
| isbn=978-0-933346-51-2}}</ref> |
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| epoch = [[J2000]] |
| epoch = [[J2000]] |
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| type = SB(s)m pec<ref name="ned">{{cite web |
| type = SB(s)m pec<ref name="ned">{{cite web |
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| work=Results for NGC 4656 |
| work=Results for NGC 4656 |
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| url=http://nedwww.ipac.caltech.edu/ |
| url=http://nedwww.ipac.caltech.edu/ |
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| access-date=2006-04-30}}</ref> |
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| archive-date=2011-05-14 |
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| archive-url=https://web.archive.org/web/20110514100451/http://nedwww.ipac.caltech.edu/ |
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| dead-url=no |
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}}</ref> |
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| ra = {{RA|12|43|57.7}}<ref name="ned"/> |
| ra = {{RA|12|43|57.7}}<ref name="ned"/> |
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| dec = {{DEC|+32|10|05}}<ref name="ned"/> |
| dec = {{DEC|+32|10|05}}<ref name="ned"/> |
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| dist_ly = |
| dist_ly = |
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| z= 646 |
| z= 646 km/[[second|s]]<ref name="ned"/> |
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| appmag_v = 11.0<ref name="ned"/> |
| appmag_v = 11.0<ref name="ned"/> |
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| size_v = |
| size_v = 12.9{{prime}}<ref name="ned"/> |
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| size = 78,500 ly |
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| notes = [[交互作用星系|交互作用星系對]] |
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| notes = similar to SMC |
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| names = [[ |
| 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 |
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}} |
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'''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}}。 |
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'''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。 |
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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>。 |
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[[File:The Hockey Stick Galaxy.jpg|thumb|哈伯太空望遠鏡拍攝的星系特寫影像。]] |
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== 相關條目 == |
== 相關條目 == |
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* [[觸鬚星系]] |
* [[觸鬚星系]] |
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== 參考資料 == |
== 參考資料 == |
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{{reflist}} |
{{reflist}} |
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{{commons category}} |
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* [http://messier.seds.org/xtra/ngc/n4656.html SEDS] – NGC 4656 |
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{{獵犬座}} |
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{{DEFAULTSORT:NGC 4656 and NGC 4657}} |
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[[Category:獵犬座]] |
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[[Category:NGC 4631群]] |
[[Category:NGC 4631群]] |
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[[Category: |
[[Category:NGC天體|4656]] |
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[[Category:UGC天體|07907]] |
[[Category:UGC天體|07907]] |
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[[Category:PGC天體|42863]] |
[[Category:PGC天體|42863]] |
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[[Category:棒旋星系]] |
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2024年8月25日 (日) 15:00的版本
NGC 4656/7 | |
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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 | |
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].
- ^ info@noirlab.edu. Hockey Stick Galaxy NGC 4656. www.noirlab.edu. [2023-12-02] (英语).
- ^ information@eso.org. 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
这是一篇與星系相關的小作品。您可以通过编辑或修订扩充其内容。 |