imported>-Zest：clean up

2025-11-28T07:44:51Z

clean up

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{{Infobox galaxy
| name = [[NGC天體表|NGC]] 247
| image = Wide Field Imager view of the spiral galaxy NGC 247.jpg
| caption = 智利[[歐洲南天天文台]][[拉西亞天文台]]的廣角成像儀（WFI）拍攝的NGC 247。
| epoch = [[J2000]]
| type = SAB(s)d<ref name="ned">{{cite web
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 247
| url=http://nedwww.ipac.caltech.edu/
| access-date=2006-12-19
| archive-date=2000-10-19
| archive-url=https://web.archive.org/web/20001019032134/http://nedwww.ipac.caltech.edu/
| dead-url=no
}}</ref>
| ra = {{RA|00|47|08.5}}<ref name="ned" />
| dec = {{DEC|-20|45|37}}<ref name="ned" />
| dist_ly = 11.1±1.2 [[光年|Mly]]
| appmag_v = 9.9<ref name="ned" />
| size_v = 21.4{{prime}} × 6.9{{prime}}<ref name="ned" />（直徑70, 000光年）
| constellation name = [[鯨魚座]]
| notes =
| names = {{link-en|HIPASS}} J0047-20、[[里昂-默東星系資料庫|LEDA]] 2758、[[ESO-LV]] 540-0220、[[紅外線天文衛星|IRAS]] F00446-2101、[[2微米全天巡天|2MASX]] J00470855-2045374、[[歐洲南天天文台|ESO]] 540-22、[[紅外線天文衛星|IRAS]] 00446-2101、 [[星系形態目錄|MCG]]-04-03-005、[[GLXY]] G113.8-83.5+144、[[Kiso Survey for Ultraviolet-excess Galaxies|KUG]] 0044-210、[[烏普薩拉總目錄|UGCA]] 11、[[主要星系目錄|PGC]] 2758<ref name="ned" />、[[科德韋爾深空天體表|Caldwell]] 62
}}

'''NGC 247'''也稱為'''科德韋爾62'''，但通常暱稱為'''爪子星系'''<ref>{{cite book |last1=Chadwick |first1=Stephen |last2=Cooper |first2=Ian |title=Imaging the Southern Sky |date=11 December 2012 |publisher=Springer |isbn=978-1461447498 |page=328}}</ref>，是位於[[鯨魚座]]的一個[[中間螺旋星系]]（然而它有時被歸類為[[矮螺旋星系]]），距離大約1110萬[[光年]]。這一距離在2011年2月下旬得到證實。之前的量測認為該星系距離我們約1,220萬[[光年]]，但事實證明這是錯誤的<ref>{{cite web|title="eso1107 — Photo Release: The Dusty Disc of NGC 247"|url=http://www.eso.org/public/news/eso1107/|website=www.eso.org|access-date=24 Jul 2022|archive-date=2015-09-24|archive-url=https://web.archive.org/web/20150924083317/http://www.eso.org/public/news/eso1107/|dead-url=no}}[http://www.eso.org/public/news/eso1107/ ] {{Wayback|url=http://www.eso.org/public/news/eso1107/ |date=20150924083317 }}</ref>。NGC 247是[[玉夫座星系群]]的成員，直徑約70, 000光年<ref>{{Cite web| url=http://annesastronomynews.com/photo-gallery-ii/galaxies-clusters/ngc-247/| title=NGC 247, an intermediate spiral galaxy in Cetus| date=2013-12-05| website=Anne's Astronomy News| language=nl-NL| access-date=2020-04-16| archive-date=2024-11-30| archive-url=https://web.archive.org/web/20241130205704/http://annesastronomynews.com/photo-gallery-ii/galaxies-clusters/ngc-247/| dead-url=no}}</ref>。

NGC 247在其螺旋盤的一側有一個異常大的空洞。這個空洞包含一些較老、較紅的恆星，但沒有較年輕、較藍的恆星<ref>
{{cite journal
|last1=Wagner-Kaiser |first1=R.
|last2=Demaio |first2=T.
|last3=Sarajedini |first3=A.
|last4=Chakrabarti |first4=S.
|year=2014
|title=The Void in the Sculptor Group Spiral Galaxy NGC 247
|arxiv=1407.0584
|doi=10.1093/mnras/stu1327 |volume=443 |issue=4 |journal=Monthly Notices of the Royal Astronomical Society |pages=3260–3269
|doi-access=free
|bibcode = 2014MNRAS.443.3260W }}</ref>。

== 附近星系和星系群資訊 ==
NGC 247是與玉夫座星系（NGC 253）引力結合的幾個星系之一。玉夫座星系群是離銀河系最近的星系群之一，而這些星系在玉夫座星系群的中心形成了一個小核心<ref name="karachentsev2005">
{{cite journal
|last1=Karachentsev |first1=I. D.
|title=The Local Group and Other Neighboring Galaxy Groups
|year=2005
|journal=[[Astronomical Journal]]
|volume=129 |issue=1 |pages=178–188
|arxiv=astro-ph/0410065
|bibcode=2005AJ....129..178K
|doi=10.1086/426368
|s2cid=119385141
}}</ref>。與玉夫座星系群相關的大多數其它星系與這個核心的引力聯系很弱<ref name="karachentsev2005" /><ref name="karachentsevetal2003">
{{cite journal
|last1=Karachentsev |first1=I. D.
|last2=Grebel |first2=E. K.
|last3=Sharina |first3=M. E.
|last4=Dolphin |first4=A. E.
|last5=Geisler |first5=D.
|last6=Guhathakrta |first6=P.
|last7=Hodge |first7=P. W.
|last8=Karachentseva |first8=V. E.
|last9=Sarajedini |first9=A.
|last10=Seitzer |first10=P.
|year=2003
|title=Distances to nearby galaxies in Sculptor
|journal=[[Astronomy and Astrophysics]]
|volume=404 |issue=1 |pages=93–111
|arxiv=astro-ph/0302045
|bibcode=2003A&A...404...93K
|doi=10.1051/0004-6361:20030170
|s2cid=54977869
}}</ref>。

== 伯比奇鏈 ==
1963年，[[傑佛瑞·伯比奇]]和[[瑪格麗特·伯比奇]]發現了一組位於NGC{{nbsp}}247東北半方的五個背景星系<ref>{{cite journal | bibcode=1963ApJ...138..873B| title=Condensations in the Intergalactic Medium| url=https://archive.org/details/sim_astrophysical-journal_1963-10-01_138_3/page/n280| last1=Burbidge| first1=E. M.| last2=Burbidge| first2=G. R.| last3=Hoyle| first3=F.| journal=The Astrophysical Journal| date=1963| volume=138| page=873| doi=10.1086/147692}}</ref>。這種組合被稱為'''伯比奇鏈'''，並且在1977年被列入{{link-en|沃龍佐夫-維拉米諾夫相互作用星系目錄| Vorontsov-Vel'yaminov Interacting Galaxies }}稱為'''VV{{nbsp}}518'''<ref>{{cite journal | bibcode=1977A&AS...28....1V| title=Atlas of interacting galaxies, Part II and the concept of fragmentation of galaxies| last1=Vorontsov-Velyaminov| first1=B. A.| journal=Astronomy and Astrophysics Supplement Series| date=1977| volume=28| page=1}}</ref>。這5個星系個別的也被確定為NGC{{nbsp}}247A、 NGC{{nbsp}}247B、NGC{{nbsp}}247C、NGC{{nbsp}}247D、和ESO{{nbsp}}540-025。.

== 圖片庫 ==
<gallery class="center" mode=nolines widths="150" heights="240">
File:The centre of NGC 247.jpg|哈伯太空望遠鏡拍攝的NGC 247中心<ref>{{cite web|title=The centre of NGC 247|url=https://www.spacetelescope.org/images/potw1640a/|website=www.spacetelescope.org|access-date=6 October 2016|archive-date=2020-07-18|archive-url=https://web.archive.org/web/20200718073435/https://www.spacetelescope.org/images/potw1640a/|dead-url=no}}</ref>。
File:Burbidge's Chain - Legacy Survey.jpg|Burbidge's Chain 由[[暗能量光譜儀]]的DESI傳統影像調查拍攝的伯比奇鏈：DR10。
</gallery>

== 參考資料 ==
{{Reflist}}

== 外部連結 ==
*{{commonscat-inline}}
{{WikiSky}}

{{Sky|00|47|08.5|-|20|45|37|12200000}}
{{Catalogs|NGC=247|C=62|PGC=2758}}
{{科德韋爾天體}}
{{Ngc5}}
{{鯨魚座恆星}}

{{DEFAULTSORT:NGC 0247}}
[[Category:中間螺旋星系|NGC 0247]]
[[Category:玉夫座星系群|NGC 0247]]
[[Category:鯨魚座|NGC 0247]]
[[Category:NGC天體|0247]]
[[Category:PGC天體|002758]]
[[Category:LEDA天體|002758]]
[[Category:科德韋爾天體|062b]]
[[Category:矮螺旋星系]]
[[Category:1784年發現的天體|17841020]]
[[Category:UGCA天體]]

NGC 247 - 版本历史

imported>-Zest：​clean up

imported>-Zest：clean up