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{{Infobox galaxy
| name = [[New General Catalogue|NGC]] 925 Amatha Galaxy
| image = NGC925.jpg
| image_size = 300px
| caption = [[萊蒙山天文台]]所拍攝的NGC 925
| epoch = [[J2000]]
| pronounce =
| constellation name = [[三角座]]
| ra = {{RA|02|27|16.913}}<ref name="ApJ131_1163"/>
| dec = {{DEC|+33|34|43.97}}<ref name="ApJ131_1163"/>
| z = 553 ± 3 km/[[second|s]]<ref name="ned" />
| h_radial_v = 564<ref name="Martin1994"/> 公里/每秒
| dist_ly = {{nowrap|3030 ± 23 萬[[光年]] (9.29 ± 0.69 [[parsec|Mpc]])}}<ref name="Silbermann1996"/>
| group_cluster = [[NGC 1023星系群]]<ref name="Tully1980"/>
| type = SB(s)d<ref name="Martin1994"/>
| mass =
| mass_light_ratio =
| size_v = {{nowrap|10′.5 × 5′.9}}<ref name="ned" />
| appmag_v = 10.7<ref name="ned" />
| notes =
| names = [[Principal Galaxies Catalogue|PGC]] 009332, [[Uppsala General Catalogue|UGC]] 01913<ref name="ned" />
}}

{{NGCInfoBox|NGCID=NGC 925|發現者=弗里德里希·威廉·赫歇爾|發現日期=1784年9月13日|其他編號=UGC 1913,MCG 5-6-45,ZWG 504.85|曆元=J2000.0|赤經=2時27分16.8秒|赤緯=33°34'44"|星座=三角座|星體=棒旋星系|星等=10.7|表面亮度=14.2|藍等=10.6}}

'''NGC 925''' 是一個[[棒旋星系]]，位於[[三角座]]內，距離我們約3,000萬[[光年]]。該星系的形態分類為 SB(s)d<ref name="Martin1994"/>，具有棒狀結構和鬆散纏繞的無環旋臂<ref name="Buta2007"/>。向南的旋臂比北臂強，後者看起來像絮狀，不太連貫。短棒從星系中心伸出，都是[[恆星]]形成處。這兩種特徵：一條主要旋臂和短棒，都是[[麥哲倫螺旋星系]]的典型特徵<ref name="Pisano2000"/>。

NGC 925是[[NGC 1023星系群]]的成員，受到[[NGC 1023]]引力束縛的星系群<ref name="Tully1980"/>。然而，最近的成員距離NGC 925至少有650,000光年（200,000pc）。有一個1,000萬[[太陽質量]] (M☉) 的中性氫雲附著在NGC 925上，目前不確定這是一個衛星[[矮星系]]、過去潮汐相互作用的殘餘物還是原始氣體雲。

== 參考資料 ==
{{Reflist|refs=
<ref name="ned">{{cite web
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 925
| url=http://nedwww.ipac.caltech.edu/
| access-date=2008-12-28
| archive-date=2011-05-14
| archive-url=https://web.archive.org/web/20110514100451/http://nedwww.ipac.caltech.edu/
| dead-url=no
}}</ref>

<ref name="Buta2007">{{Citation
| first1 = Ronald J.
| last1 = Buta
| first2 = Harold G.
| last2 = Corwin
| first3 = Stephen C.
| last3 = Odewahn
| display-authors = 1
| title = Atlas of Galaxies
| publisher = [[Cambridge University Press]]
| pages = 13–17
| date = 2007
| isbn = 978-0521820486
| url = https://books.google.com/books?id=g-P7dCbB5MEC&pg=PA16
| postscript= .
}}</ref>

<ref name="Tully1980">{{Citation
| last1 = Tully
| first1 = R. B.
| title = Nearby groups of galaxies. I - The NGC 1023 group
| journal = Astrophysical Journal, Part 1
| volume = 237
| pages = 390–403
|date=April 1980
| doi = 10.1086/157881
| bibcode = 1980ApJ...237..390T
| postscript = .
}}</ref>

<ref name="Pisano2000">{{Citation
| last1 = Pisano
| first1 = D. J.
| last2 = Wilcots
| first2 = Eric M.
| last3 = Elmegreen
| first3 = Bruce G.
| title = Structure and Star Formation in NGC 925
| journal = The Astronomical Journal
| volume = 120
| issue = 2
| pages = 763–776
|date=August 2000
| doi = 10.1086/301464
| bibcode = 2000AJ....120..763P
| postscript = .
|arxiv = astro-ph/0004219 | s2cid = 119423281
}}</ref>

<ref name="Silbermann1996">{{Citation
| last1 = Silbermann | first1 = N. A. | last2 = Harding | first2 = Paul
| last3 = Madore | first3 = Barry F. | last4 = Kennicutt | first4 = Robert C., Jr.
| last5 = Saha | first5 = Abhijit | last6 = Stetson | first6 = Peter B.
| last7 = Freedman | first7 = Wendy L. | last8 = Mould | first8 = Jeremy R.
| last9 = Graham | first9 = John A. | last10 = Hill | first10 = Robert J.
| last11 = Turner | first11 = Anne | last12 = Bresolin | first12 = Fabio
| last13 = Ferrarese | first13 = Laura | last14 = Ford | first14 = Holland
| last15 = Hoessel | first15 = John G. | last16 = Han | first16 = Mingsheng
| last17 = Huchra | first17 = John | last18 = Hughes | first18 = Shaun M. G.
| last19 = Illingworth | first19 = Garth D. | last20 = Phelps | first20 = Randy
| last21 = Sakai | first21 = Shoko
| display-authors = 1
| title = The Hubble Space Telescope Key Project on the Extragalactic Distance Scale. VI. The Cepheids in NGC 925
| journal = Astrophysical Journal
| volume = 470
| page = 1
|date=October 1996
| doi = 10.1086/177845
| bibcode = 1996ApJ...470....1S
| postscript = .
}}</ref>

<ref name="Martin1994">{{Citation
| last1 = Martin
| first1 = Pierre
| last2 = Roy
| first2 = Jean-Rene
| title = The influence of bars on the chemical composition of spiral galaxies
| journal = Astrophysical Journal, Part 1
| volume = 424
| issue = 2
| pages = 599–614
|date=April 1994
| doi = 10.1086/173917
| bibcode = 1994ApJ...424..599M
| postscript = .
}}</ref>

<ref name="ApJ131_1163">{{cite journal |doi=10.1086/498708 |last1=Skrutskie |first1=Michael F. |last2=Cutri |first2=Roc M. |last3=Stiening |first3=Rae |last4=Weinberg |first4=Martin D. |last5=Schneider |first5=Stephen E. |last6=Carpenter |first6=John M. |last7=Beichman |first7=Charles A. |last8=Capps |first8=Richard W. |last9=Chester |first9=Thomas |last10=Elias |first10=Jonathan H. |last11=Huchra |first11=John P. |last12=Liebert |first12=James W. |last13=Lonsdale |first13=Carol J. |last14=Monet |first14=David G. |last15=Price |first15=Stephan |last16=Seitzer |first16=Patrick |last17=Jarrett |first17=Thomas H. |last18=Kirkpatrick |first18=J. Davy |last19=Gizis |first19=John E. |last20=Howard |first20=Elizabeth V. |last21=Evans |first21=Tracey E. |last22=Fowler |first22=John W. |last23=Fullmer |first23=Linda |last24=Hurt |first24=Robert L. |last25=Light |first25=Robert M. |last26=Kopan |first26=Eugene L. |last27=Marsh |first27=Kenneth A. |last28=McCallon |first28=Howard L. |last29=Tam |first29=Robert |last30=Van Dyk |first30=Schuyler D. |last31=Wheelock |first31=Sherry L. |title=The Two Micron All Sky Survey (2MASS) |journal=The Astronomical Journal |date=1 February 2006 |volume=131 |pages=1163–1183 |url=https://ui.adsabs.harvard.edu/abs/2006AJ....131.1163S/abstract |issn=0004-6256 |access-date=2022-10-25 |archive-date=2019-09-13 |archive-url=https://web.archive.org/web/20190913005054/http://adsabs.harvard.edu/abs/2006AJ....131.1163S |dead-url=no }}</ref>
}}

{{NGCReference|925}}

{{Catalogs|NGC=925}}

NGC 925 - 版本历史

imported>InternetArchiveBot：​补救2个来源，并将0个来源标记为失效。) #IABot (v2.0.9.3

imported>InternetArchiveBot：补救2个来源，并将0个来源标记为失效。) #IABot (v2.0.9.3