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{{Infobox galaxy
| name = [[NGC天體表#IC天體|IC]] 1101
| image = [[File:Supergalaxia IC 1101.png|400px]]
| caption = 從左到右依序為[[銀河系]]、[[仙女座星系]]、[[M87]]、'''IC 1101'''
| epoch = [[J2000.0|J2000]]
| constellation name = [[室女座]]
| ra = {{RA|15|10|56.1}}<ref name="ned">{{cite web |url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=IC+1101&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES |title=NED results for object IC 1101 |work=NASA/IPAC Extragalactic Database |accessdate=11 November 2006 |archive-date=2019-02-12 |archive-url=https://web.archive.org/web/20190212011626/http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=IC+1101&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES |dead-url=no }}</ref>
| dec = {{DEC|+05|44|41}}<ref name="ned" />
| z = {{val|0.077947|0.000087}}<ref name="ned" />
| h_radial_v = {{convert|23368|±|26|km/s|abbr=on}}<ref name="ned" />
| gal_v = {{convert|23395|±|26|km/s|abbr=on}}<ref name="ned" />
| dist_ly = {{val|10.45|0.73|u=[[光年|億光年]]}} ({{val|320.5|22.4|u=[[秒差距|Mpc]]}}){{hub|0.73}}<ref name="ned" />
| group_cluster = [[阿贝尔2029]]
| type = E/S0<ref name="SIMBAD"/>
| size = {{val|210|39|u= [[光年|Kly]]}} （{{val|65|12|u=[[秒差距#秒差距和千秒差距|kpc]]}}）[[有效半徑]]<ref name="Fisher1995">{{cite journal |title=Kinematics of 13 brightest cluster galaxies |url=https://archive.org/details/sim_astrophysical-journal_1995-01-10_438_2/page/538 |journal=[[The Astrophysical Journal]] |first1=David |last1=Fisher |first2=Garth |last2=Illingworth |first3=Marijn |last3=Franx |volume=438 |issue=2 |pages=539–562 |date=January 1995 |doi=10.1086/175100 |bibcode=1995ApJ...438..539F}}</ref>
| stars = 100 兆 (1014)
| appmag_v = 14.73<ref name="ned" />
| size_v = 1'.2 × 0'.6<ref name="ned" />
| notes =
| names = [[烏普薩拉星系總表|UGC]] 9752,<ref name="ned" /> [[主要星系目錄|PGC]] 54167,<ref name="ned" /> A2029-[[最亮團星系|BCG]]<ref name="ned" />
| references =
}}

'''IC 1101'''是位於[[阿贝尔2029]][[星系團]]中心的一個超巨大[[橢圓星系]]，距離地球大約320[[秒差距|百萬秒差距]]（10.4億[[光年]]）<ref name="ned" />。

== 特性 ==
這個星系被分類為超巨大橢圓（E）到透鏡狀星系（S0）<ref name="SIMBAD">{{cite web |url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=IC+1101 |title=IC 1101 -- Brightest galaxy in a Cluster (BCG) |work=[[SIMBAD]] |accessdate=21 December 2014 |archive-date=2018-09-08 |archive-url=https://web.archive.org/web/20180908063837/http://simbad.u-strasbg.fr/simbad/sim-id?Ident=IC+1101 |dead-url=no }}</ref>，並且是艾伯耳2029星系團中最亮的星系（它也會被稱為A2029-BCG；BCG的意思是''[[最亮團星系]]''）<ref name="Lewis2003">{{cite journal |title=''Chandra'' Observations of A2029: The Dark Matter Profile Down to below 0.01''r''vir in an Unusually Relaxed Cluster |url=https://archive.org/details/sim_astrophysical-journal_2003-03-20_586_1/page/134 |journal=[[The Astrophysical Journal]] |first1=Aaron D. |last1=Lewis |first2=David A. |last2=Buote |first3=John T. |last3=Stocke |volume=586 |issue=1 |pages=135–142 |date=March 2003 |doi=10.1086/367556 |bibcode=2003ApJ...586..135L |arxiv=astro-ph/0209205}}</ref><ref name="science250_4980_539">{{cite journal |title=The central galaxy in Abell 2029 - an old supergiant |url=https://archive.org/details/sim_science_1990-10-26_250_4980/page/n83 |journal=[[Science (journal)|Science]] |first1=Juan M. |last1=Uson |first2=Stephen P. |last2=Boughn |first3=Jeffrey R. |last3=Kuhn |volume=250 |issue=4980 |pages=539–540 |date=October 1990 |doi=10.1126/science.250.4980.539 |bibcode=1990Sci...250..539U}}</ref>。這個星系的型態類型被懷疑是個扁平的圓盤狀，但從地球上看到的只是它最寬廣的一面。然而，多數的透鏡星系的尺寸範圍從15至37[[秒差距|千秒差距]]（5萬至12萬[[光年]]）<ref>{{cite web |url=http://cseligman.com/text/atlas/ngc0a.htm |title=NGC Objects: NGC 50 - 99 |series=Celestial Atlas |work=Cseligman.com |first=Courtney |last=Seligman |accessdate=14 April 2015 |archive-date=2018-10-24 |archive-url=https://web.archive.org/web/20181024090905/http://cseligman.com/text/atlas/ngc0a.htm |dead-url=no }}</ref><ref>{{specify|note=Where in the source is this stated?|date=January 2016}}</ref>。

IC 1101是[[巨大星系列表|已知星系中最大]]的，但是如何定義這種星系的大小，在天文學的文獻中仍有爭議。來自星系的藍光[[攝影乾版]]（對恆星的取樣不包括擴散的暈）給予的[[有效半徑]]（輻射出一半光量的半徑）是{{val|65|12|u=kpc}} ({{val|212|39|u=thousand ly}})<ref name="Fisher1995" />。這個星系有非常大的低強度''漫射光''，半徑延伸至600千秒差距（200萬光年）<ref name="Uson1991">{{cite journal |title=Diffuse light in dense clusters of galaxies. I. ''R''-band observations of Abell 2029 |url=https://archive.org/details/sim_astrophysical-journal_1991-03-01_369_1/page/46 |journal=[[The Astrophysical Journal]] |first1=Juan M. |last1=Uson |first2=Stephen P. |last2=Boughn |first3=Jeffrey R. |last3=Kuhn |volume=369 |pages=46–53 |date=March 1991 |doi=10.1086/169737 |bibcode=1991ApJ...369...46U}}</ref>。研究IC 1101的作者確認''若包含暈可能是宇宙中最大和最亮的星系''<ref name="Uson1991" />。

像多數的巨大星系，IC 1101擁有大量的富金屬星，其中有些比太陽老70億歲，因此呈現金黃色的光澤。它在中心有一個與巨大的黑洞，與明亮的無線電源相關聯。

== 發現 ==
這個星系是在1790年6月19日由英國天文學家[[威廉·赫歇爾]]發現的。它於1895年被[[約翰·路易·埃米爾·德雷耳]]收錄在[[NGC天體表#IC天體|星雲和星團索引目錄]]（IC）中的第1101個天體。當它被發現時，以它的外觀被認為是一個星雲。後來[[愛德溫·哈伯]]在1932年發現一些具有星雲外觀的天體實際上就是獨立的星系，對這些天空中物體進行的後續分析，發現IC 1101是一個獨立的星系。

== 相關條目 ==
*[[星系列表]]
*[[星系團]]
*[[星系團表]]
*[[星系]]

== 參考資料 ==
{{reflist}}

== 外部連結 ==
* {{cite news |url=http://www.nytimes.com/1990/10/26/us/sighting-of-largest-galaxy-hints-clues-on-the-clustering-of-matter.html |title=Sighting of Largest Galaxy Hints Clues on the Clustering of Matter |work=[[The New York Times]] |first=John Noble |last=Wilford |date=26 October 1990 |accessdate=2016-04-14 |archive-date=2016-03-06 |archive-url=https://web.archive.org/web/20160306164259/http://www.nytimes.com/1990/10/26/us/sighting-of-largest-galaxy-hints-clues-on-the-clustering-of-matter.html |dead-url=no }}
* {{cite web |url=http://apod.nasa.gov/apod/ap120312.html |title=The Scale of the Universe - Interactive |work=[[Astronomy Picture of the Day]] |date=12 March 2012 |accessdate=2016-04-14 |archive-date=2012-03-14 |archive-url=https://web.archive.org/web/20120314141452/http://apod.nasa.gov/apod/ap120312.html |dead-url=no }}
* {{WikiSky}}

{{Sky|15|10|56.1|+|05|44|41|1}}

[[Category:橢圓星系]]
[[Category:室女座]]
[[Category:IC天體|1101]]
[[Category:PGC天體|54167]]
[[Category:UGC天體|09752]]
[[Category:1790年發現的天體|17900619]]

IC 1101 - 版本历史

imported>InternetArchiveBot：​Add 4 books for verifiability (20251017sim)) #IABot (v2.0.9.5) (GreenC bot

imported>InternetArchiveBot：Add 4 books for verifiability (20251017sim)) #IABot (v2.0.9.5) (GreenC bot