编辑“︁UGC 2885”︁

{{Infobox Galaxy
| name               = [[烏普薩拉總目錄|UGC]] 2885
| image              = UGC 2885.tif
| image_size         = 250px
| caption            =[[哈伯太空望遠鏡]]拍攝的UGC 2885<ref>{{cite web |title=Hubble Surveys Gigantic Galaxy |url=https://www.spacetelescope.org/news/heic2002/ |website=www.spacetelescope.org |access-date=6 January 2020 |language=en |archive-date=2020-11-21 |archive-url=https://web.archive.org/web/20201121042112/https://www.spacetelescope.org/news/heic2002/ |dead-url=no }}</ref>。
| epoch              = [[曆元#儒略年和J2000|J2000]]
| ra                 = {{RA|03|53|02.458}}<ref name=dr2>{{cite Gaia DR2|219771110013777792}}</ref>
| dec                = {{DEC|+35|35|22.17}}<ref name=dr2/>
| constellation name = [[英仙座]]
| z                  = 0.019353<ref name=blaise>{{cite journal|doi=10.1086/172457|title=Spiral structure of the giant galaxy UGC 2885 - H-alpha kinematics|url=https://archive.org/details/sim_astrophysical-journal_1993-04-01_406_2/page/456|journal=The Astrophysical Journal|volume=406|pages=457|year=1993|last1=Canzian|first1=Blaise|last2=Allen|first2=R. J.|last3=Tilanus|first3=R. P. J.|bibcode=1993ApJ...406..457C}}</ref>
| dist_ly            = {{convert|71.1|Mpc|Mly|abbr=on|lk=on}}<ref name=tully>{{cite journal|arxiv=1605.01765|doi=10.3847/0004-6256/152/2/50|title=Cosmicflows-3|journal=The Astronomical Journal|volume=152|issue=2|pages=50|year=2016|last1=Tully|first1=R. Brent|last2=Courtois|first2=Hélène M.|last3=Sorce|first3=Jenny G.|bibcode=2016AJ....152...50T|s2cid=250737862 |doi-access=free }}</ref>
| type               = SA(rs)c<ref name=ned/>
| appmag_v           = 13.5<ref name="ned">{{cite web
  | author=NASA/IPAC Extragalactic Database
  | title=NED search results for object UGC 02885
  | url=http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=UGC%202885&extend=no&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
  | access-date=2013-09-05
  | archive-date=2019-02-18
  | archive-url=https://web.archive.org/web/20190218060535/http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=UGC%202885&extend=no&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>
| mass               = 2萬億<ref>{{Cite book|author=Jeremy Heyl|title=UGC 2885, the Largest Known Spiral Galaxy|date=1980|publisher=The University of British Columbia|url=http://www.phas.ubc.ca/~heyl/ugc2885.pdf|access-date=2023-12-02|archive-date=2016-04-04|archive-url=https://web.archive.org/web/20160404162906/http://www.phas.ubc.ca/~heyl/ugc2885.pdf|dead-url=no}}</ref><ref>{{Cite web|url=http://www.poyntsource.com/Richard/ugc_2885.htm|title=UGC 2885 - GIANT SIZE Spiral Galaxy|access-date=2016-05-17|archive-date=2016-04-05|archive-url=https://web.archive.org/web/20160405062352/http://www.poyntsource.com/Richard/ugc_2885.htm|dead-url=no}}</ref>
| size_v             = 3.9[[弧分|{{prime}}]] × 1.9{{prime}}<ref name="ned"/>
| size               = {{convert|463|kly|kpc|abbr=on|lk=on}}<ref name=hunter>{{cite journal|arxiv=1307.7116|doi=10.1088/0004-6256/146/4/92|title=Star Formation in Two Luminous Spiral Galaxies|journal=The Astronomical Journal|volume=146|issue=4|pages=92|year=2013|last1=Hunter|first1=Deidre A. |author-link1=Deidre Hunter |last2=Elmegreen|first2=Bruce G.|last3=Rubin|first3=Vera C.|last4=Ashburn|first4=Allison|last5=Wright|first5=Teresa|last6=Józsa|first6=Gyula I. G.|last7=Struve|first7=Christian|bibcode=2013AJ....146...92H|s2cid=119195964}}</ref>
| names              = [[紅外線天文衛星|IRAS]] 03497+3526、[[星系形態目錄|MCG]]+06-09-012、TC 49、Z 039.8+3527<ref name="SIMBAD">{{cite simbad |title=UGC 2885}}</ref>
}}

'''UGC 2885'''（[[薇拉·魯賓|魯賓的]]星系<ref>{{cite web | url=https://apod.nasa.gov/apod/ap200125.html | title=APOD: 2020 January 25 - Rubin's Galaxy | access-date=2023-12-02 | archive-date=2023-05-17 | archive-url=https://web.archive.org/web/20230517190818/https://apod.nasa.gov/apod/ap200125.html | dead-url=no }}</ref>，暱稱為「哥斯拉星系」<ref>{{cite web| url = https://www.nasa.gov/feature/goddard/2020/nasas-hubble-surveys-gigantic-galaxy| title = NASA's Hubble Surveys Gigantic Galaxy {{!}} NASA| date = 2 January 2020| access-date = 2023-12-02| archive-date = 2023-09-08| archive-url = https://web.archive.org/web/20230908044139/https://www.nasa.gov/feature/goddard/2020/nasas-hubble-surveys-gigantic-galaxy/| dead-url = no}}</ref>。）位於[[英仙座]]，其[[星系型態分類|類型]]為「SA(rs)c」，是一個巨大的[[棒旋星系|有棒的]][[螺旋星系]]。它距離[[地球]] {{convert|232|e6ly|Mpc|lk=on}}，並且測得直徑跨距為 {{convert|463,000|ly|pc|lk=on|abbr=on}}，使其成為[[最大星系清單|已知最大的螺旋星系]]之一<ref name=hunter/><ref name=tully/><!-- Older estimates has given much larger sizes.<ref name=rubin>{{Cite journal |last1=Rubin |first1=V. |last2=Thonnard |first2=N. |last3=Ford |first3=W. K. Jr. |year=1980 |title=Rotational Properties of 21 Sc Galaxies With a Large Range of Luminosities and Radii from NGC 4605 (R=4kpc) to UGC 2885 (R=122kpc) |url=https://archive.org/details/sim_astrophysical-journal_1980-06-01_238_2/page/470 |journal=[[The Astrophysical Journal]] |volume=238 |pages=471–487 |bibcode=1980ApJ...238..471R |bibcode-access=free  |doi=10.1086/158003 |doi-access=free }}</ref>-->。它也是[[英仙-雙魚超星系團]]的可能成員<ref>{{Cite web|url=http://www.pbase.com/image/120255132|title=UGC 2885 by jshuder|access-date=2018-05-17|archive-date=2018-10-24|archive-url=https://web.archive.org/web/20181024013531/http://www.pbase.com/image/120255132|dead-url=no}}</ref>。

UGC 2885是一個[[螺旋星系]]，有一個相對[[低表面亮度星系|低的表面亮度]]。中心凸起是這個星系最突出的特徵，在那裡有一個微弱的棒形穿過它的中心。 

UGC 2885被歸類為一個場星系：遠離其它主要星系，遙遠、低密度和"空閒的"空間中發現的一類星系。美國國家航空暨太空總署報告稱，UGC 2885盤面生長的理論主要來源於星系間氫氣的吸積，而不是像大多數星系那樣通過[[星系碰撞]]的重複過程生長。

缺乏相互作用的證據來自螺旋臂和圓盤近乎完美的結構、潮汐尾的缺乏以及恆星形成的適度速度中可以明顯看出：大約0.5太陽質量/年。

此外，儘管最初被歸類為一個無條紋的螺旋星系，但哈伯的新影像清楚地顯示，在核心的環形結構上存在一個小棒。這很奇怪，因為大多數棒狀被認為是通過衛星和鄰近星系帶來的微小引力擾動形成的，而這些正是這個星系所缺乏的。該星系強調，棒帶能够在不受另一個星系影響的情况下在螺旋星系中形成，這表明其它力，如恆星、氣體和塵埃之間的相互作用，以及[[暗物質]]的引力影響，可能在它們的發展中發揮作用。

在2002年1月17日，一顆命名為[[SN 2002F]]的[[II型超新星]]爆炸被探測到<ref>{{Cite web|url=http://www.kopernik.org/images/archive/u2885.htm|title=UGC 2885, Spiral Galaxy; Supernova 2002 F|access-date=2016-05-17|archive-date=2016-04-10|archive-url=https://web.archive.org/web/20160410201255/http://www.kopernik.org/images/archive/u2885.htm|dead-url=no}}</ref><ref>{{Cite web|url=http://w.astro.berkeley.edu/bait/public_html/2002/sn2002f.html|title=SN 2002F|access-date=2018-05-17|archive-date=2016-04-04|archive-url=https://web.archive.org/web/20160404221933/http://w.astro.berkeley.edu/bait/public_html/2002/sn2002f.html|url-status=dead}}</ref>。

== 相關條目 ==
* [[IC 1101]]
* [[NGC 6872|NGC 6872和IC 4970]]：錯誤地宣稱是2013年最大的螺旋星系
* [[馬林1]]：已知最大的螺旋星系
* [[NGC 262]]

== 參考資料 ==
{{reflist|refs=

<!--
<ref name=anna>{{cite journal|arxiv=1710.01341|doi=10.1093/mnras/stx2583|title=What made discy galaxies giant?|journal=Monthly Notices of the Royal Astronomical Society|volume=473|issue=3|pages=3796–3809|year=2018|last1=Saburova|first1=A. S.}}</ref>

<ref name=allen>{{cite journal|bibcode=1985A&A...146..213R|title=Radio observations of H I in UGC 2885, the largest identified SC galaxy|url=https://archive.org/details/sim_astronomy-and-astrophysics_1985-05_146_2/page/213|journal=Astronomy and Astrophysics|volume=146|pages=213|last1=Roelfsema|first1=P. R.|last2=Allen|first2=R. J.|year=1985}}</ref>

<ref name=huchra>{{cite journal|doi=10.1086/313194|title=The CfA Redshift Survey: Data for the South Galactic Cap|journal=The Astrophysical Journal Supplement Series|volume=121|issue=2|pages=287–368|year=1999|last1=Huchra|first1=John P.|last2=Vogeley|first2=Michael S.|last3=Geller|first3=Margaret J.|bibcode=1999ApJS..121..287H}}</ref>
-->

}}

== 外部連結 ==
* [http://simbad.u-strasbg.fr/simbad/sim-id?Ident=UGC+2885 UGC 2885] {{Wayback|url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=UGC+2885 |date=20231202154404 }} at [[SIMBAD]]

{{Catalogs | UGC = 2885 }}

{{英仙座恆星}}

{{DEFAULTSORT:UGC 2885}}
[[Category:英仙座]]
[[Category:無棒螺旋星系]]
[[Category:UGC天體|02885]]
[[Category:MCG天體]]
[[Category:IRAS星表天體]]
[[Category:低表面亮度星系]]
[[Category:交互作用星系]]