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{{Infobox Galaxy
| name = 3C 321
| image = [[File:Galaxy3C321-composite.jpg|300px]]
| image_size = 300px
| caption = 3C 321星系系統。一股能量從左下角的"死星星系"噴發出來，轟擊它在右上方的夥伴。
| type =
| ra = {{RA|15|31|42.7}}
| dec = {{DEC|+24|04|25.00}}
| z = 0.0961<ref name=ned/>
| dist_ly = {{convert|1.2|e9ly|Mpc|abbr=unit|lk=on}} <br/>（[[同移距離]]）<ref name=ned>{{cite web |title=NASA/IPAC Extragalactic Database |work=Results for 3C 321 |url=http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=3C+321 |accessdate=2010-04-26 |archive-date=2019-09-18 |archive-url=https://web.archive.org/web/20190918195420/http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=3C+321 |dead-url=no }}</ref>
| appmag_v =
| size_v =
| constellation name = [[巨蛇座]]
}}

'''3C 321'''是兩個星系相互旋轉的系統。它們是以第一個被觀察到一個星系以爆炸的能量轟擊另一個星系的系統而著稱，從理論上說是在星系的中心有一個[[超大質量黑洞]]的構造。

較大的星系被NASA的天文學家謔稱為"死星星系"，它有束能量充沛的噴流朝向它的同伴發射。NASA是在2007年12月18日宣布這項發現。由於太空和地面望遠鏡的共同努力，才有可能觀測到這股高能量的噴流。

這些工具包括NASA的[[钱德拉X射线天文台|錢卓X射線天文台]]、[[哈伯太空望遠鏡]]、[[史匹哲太空望遠鏡]]、[[甚大天線陣]]、以及{{link-en|多元素無線電干涉儀網路|MERLIN}}。

== 參考資料 ==
{{reflist}}

== 進階讀物 ==
* {{cite web |url=https://www.nasa.gov/mission_pages/chandra/news/07-139.html |title='Death Star' Galaxy Black Hole Fires at Neighboring Galaxy |publisher=NASA |first1=Grey |last1=Hautaluoma |first2=Jennifer |last2=Morcone |first3=Megan |last3=Watzke |date=17 December 2007 |accessdate=2018-06-14 |archive-date=2020-11-29 |archive-url=https://web.archive.org/web/20201129173438/https://www.nasa.gov/mission_pages/chandra/news/07-139.html |dead-url=no }}
* {{cite web |url=https://science.nasa.gov/science-news/science-at-nasa/2007/18dec_assault |title=NASA Announces Discovery of Assault by a Black Hole |publisher=NASA |series=Science@NASA |first=Tony |last=Phillips |date=18 December 2007 |accessdate=2018-06-14 |archive-date=2020-09-17 |archive-url=https://web.archive.org/web/20200917183344/https://science.nasa.gov/science-news/science-at-nasa/2007/18dec_assault |dead-url=no }}
* {{cite news |url=http://www.space.com/4753-galaxy-blasts-neighbor-deadly-jet.html |title=Galaxy Blasts Neighbor with Deadly Jet |work=Space.com |first=Dave |last=Mosher |date=17 December 2007 |accessdate=2018-06-14 |archive-date=2020-11-11 |archive-url=https://web.archive.org/web/20201111190416/https://www.space.com/4753-galaxy-blasts-neighbor-deadly-jet.html |dead-url=no }}
* {{cite news |url=http://dsc.discovery.com/news/2007/12/17/galaxy-black-hole.html |title=Galaxy Zapping Neighbor With Deathly Beam |work=Discovery News |first=Larry |last=O'Hanlon |date=17 December 2007 |archiveurl=https://web.archive.org/web/20071219125936/http://dsc.discovery.com/news/2007/12/17/galaxy-black-hole.html |archivedate=2007-12-19 |deadurl=yes |accessdate=2018-06-14 }}

== 外部連結 ==
* [http://chandra.harvard.edu/photo/2007/3c321/ "Black Hole Fires at Neighboring Galaxy"]{{Wayback|url=http://chandra.harvard.edu/photo/2007/3c321/ |date=20090120190731 }} at [[Harvard University]]'s Chandra Photo Album
* [http://zl1.extragalactic.info/cgi/sourcepage?74 Source page for 3C321]{{Wayback|url=http://zl1.extragalactic.info/cgi/sourcepage?74 |date=20200917153834 }} at Extragalactic.info
* [http://www.jb.man.ac.uk/atlas/object/3C321.html An Atlas of DRAGNs: 3C 321]{{Wayback|url=http://www.jb.man.ac.uk/atlas/object/3C321.html |date=20200914231238 }} by the [[Jodrell Bank Centre for Astrophysics]]

[[Category:巨蛇座]]
[[Category:交互作用星系]]
[[Category:3C天體|321]]

3C 321 - 版本历史

imported>InternetArchiveBot：​补救8个来源，并将0个来源标记为失效。) #IABot (v2.0.8

imported>InternetArchiveBot：补救8个来源，并将0个来源标记为失效。) #IABot (v2.0.8