小麦哲伦星系：修订间差异

小麥哲倫星系（SMC）
	小麥哲倫星系; (Source: 數位化巡天項目 2)
观测资料（J2000 曆元）
星座	杜鵑座和水蛇座
赤经	00h 52m 44.8s
赤纬	-72° 49′ 43″
紅移	0.000527
距离	203.7 ± 1.5 kly (62.44 ± 0.47 kpc)
视星等 (V)	2.7
特征
类型	SB(s)m pec
恒星数量	30億
大小	5.78千秒差距（18,900光年）; （直徑：25.0 mag/arcsec2 B-頻道等電位）
角直徑 (V)	5° 20′ × 3° 5′
其他	Companion dwarf to the 銀河系的; 侏儒夥伴
其他名称
	SMC, NGC 292， PGC 3085、Nubecula Minor
	參見：星系、星系列表

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2024年1月17日 (三) 17:23的版本

小麥哲倫星系（SMC）是一個環繞著銀河系的矮星系^[5]，擁有數億顆的恆星 ^[5]。

推測小麥哲倫星系原本是棒旋星系，因為受到銀河系的擾動才成為不規則星系 ^[6]，但在核心仍殘留著棒狀的結構。

在20萬光年距離上的小麥哲倫星系是最靠近銀河系的鄰居之一，也是裸眼能看見的最遙遠天體之一。

他位於杜鵑座，在夜空中看似模糊的光斑，大小約為3゜，由於平均的赤緯是 -73゜，所以只能在南半球和北半球的低緯度地區看見。他看似銀河系被分割的一個片段，由於表面光度很低，要在黑暗的環境下才能看得清楚。

他與在東方20゜的大麥哲倫星系成為一對，都是本星系群的成員。

迷你麥哲倫雲

早在1986年，天體物理學家D.S.Mathewson、V.L.Ford和N.Visvanathan提出，事實上，小麥哲倫星系可能被一分為二，在它的主要部份後面有一小部分星系（從地球的角度來看），並相距約30,000光年。他們認為，這是由於過去與大麥哲倫星系的互動導致小麥哲倫星系分裂，並且這兩個部分仍在分離。他們將這個較小的遺跡命名為迷你麥哲倫星雲^[7]^[8]。

2023年，據報導，小麥哲倫星系實際上是兩個獨立的結構，具有不同的恆星和氣體化學成分，相距約5,000秒差距^[9]。

參考資料

^ ^1.00 ^1.01 ^1.02 ^1.03 ^1.04 ^1.05 ^1.06 ^1.07 ^1.08 ^1.09 ^1.10 NASA/IPAC 河外資料庫. 小麥哲倫星系的結果. [2006-12-01].
^ Graczyk, Dariusz; Pietrzyński, Grzegorz; Thompson, Ian B.; Gieren, Wolfgang; Zgirski, Bartłomiej; Villanova, Sandro; Górski, Marek; Wielgórski, Piotr; Karczmarek, Paulina; Narloch, Weronika; Pilecki, Bogumił; Taormina, Monica; Smolec, Radosław; Suchomska, Ksenia; Gallenne, Alexandre; Nardetto, Nicolas; Storm, Jesper; Kudritzki, Rolf-Peter; Kałuszyński, Mikołaj; Pych, Wojciech. A Distance Determination to the Small Magellanic Cloud with an Accuracy of Better than Two Percent Based on Late-type Eclipsing Binary Stars. The Astrophysical Journal. 2020, 904 (1): 13. Bibcode:2020ApJ...904...13G. S2CID 224706414. arXiv:2010.08754 . doi:10.3847/1538-4357/abbb2b .
^ De Vaucouleurs, Gerard; De Vaucouleurs, Antoinette; Corwin, Herold G.; Buta, Ronald J.; Paturel, Georges; Fouque, Pascal. Third Reference Catalogue of Bright Galaxies. 1991. Bibcode:1991rc3..book.....D.
^ Jonathan Powell. Rare Astronomical Sights and Sounds. Springer. 17 September 2018. ISBN 978-3-319-97701-0.
^ ^5.0 ^5.1 存档副本. [2007-02-10]. （原始内容存档于2010-08-08）.
^ 存档副本. [2007-02-10]. （原始内容存档于2015-11-07）.
^ Mathewson, D. S.; Ford, V. L.; Visvanathan, N. The structure of the Small Magellanic Cloud. The Astrophysical Journal. 1986, 301: 664. Bibcode:1986ApJ...301..664M. ISSN 0004-637X. doi:10.1086/163932.
^ Crowl, Hugh H.; et al. The Line-of-Sight Depth of Populous Clusters in the Small Magellanic Cloud. The Astronomical Journal. 2001, 122 (1): 220–231. Bibcode:2001AJ....122..220C. ISSN 0004-6256. S2CID 45263795. arXiv:astro-ph/0104227v1 . doi:10.1086/321128.
^ Murray, Claire E.; Hasselquist, Sten; Peek, Joshua E. G.; Christina Willecke Lindberg; Almeida, Andres; Choi, Yumi; Craig, Jessica E. M.; Denes, Helga; Dickey, John M.; Di Teodoro, Enrico M.; Federrath, Christoph; Gerrard, Isabella A.; Gibson, Steven J.; Leahy, Denis; Lee, Min-Young; Lynn, Callum; Yik Ki Ma; Marchal, Antoine; McClure-Griffiths, N. M.; Nidever, David; Nguyen, Hiep; Pingel, Nickolas M.; Tarantino, Elizabeth; Uscanga, Lucero; van Loon, Jacco Th. A Galactic Eclipse: The Small Magellanic Cloud is Forming Stars in Two, Superimposed Systems. 2023. arXiv:2312.07750  [astro-ph.GA].

外部連結

NASA Extragalactic Database entry on the SMC （页面存档备份，存于互联网档案馆）
SEDS entry on the SMC
SMC at ESA/Hubble （页面存档备份，存于互联网档案馆）

维基共享资源上的相關多媒體資源：小麦哲伦星系

天文學目錄
NGC天體表：	NGC 290 - NGC 291 - NGC 292 - NGC 293 - NGC 294

[ned-1] 1.00 ^1.01 ^1.02 ^1.03 ^1.04 ^1.05 ^1.06 ^1.07 ^1.08 ^1.09 ^1.10 NASA/IPAC 河外資料庫. 小麥哲倫星系的結果. [2006-12-01].

[Graczyk2020-2] Graczyk, Dariusz; Pietrzyński, Grzegorz; Thompson, Ian B.; Gieren, Wolfgang; Zgirski, Bartłomiej; Villanova, Sandro; Górski, Marek; Wielgórski, Piotr; Karczmarek, Paulina; Narloch, Weronika; Pilecki, Bogumił; Taormina, Monica; Smolec, Radosław; Suchomska, Ksenia; Gallenne, Alexandre; Nardetto, Nicolas; Storm, Jesper; Kudritzki, Rolf-Peter; Kałuszyński, Mikołaj; Pych, Wojciech. A Distance Determination to the Small Magellanic Cloud with an Accuracy of Better than Two Percent Based on Late-type Eclipsing Binary Stars. The Astrophysical Journal. 2020, 904 (1): 13. Bibcode:2020ApJ...904...13G. S2CID 224706414. arXiv:2010.08754 . doi:10.3847/1538-4357/abbb2b .

[RC3-3] De Vaucouleurs, Gerard; De Vaucouleurs, Antoinette; Corwin, Herold G.; Buta, Ronald J.; Paturel, Georges; Fouque, Pascal. Third Reference Catalogue of Bright Galaxies. 1991. Bibcode:1991rc3..book.....D.

[4] Jonathan Powell. Rare Astronomical Sights and Sounds. Springer. 17 September 2018. ISBN 978-3-319-97701-0.

[#1-5] 5.0 ^5.1 存档副本. [2007-02-10]. （原始内容存档于2010-08-08）.

[6] 存档副本. [2007-02-10]. （原始内容存档于2015-11-07）.

[MathewsonFord1986-7] Mathewson, D. S.; Ford, V. L.; Visvanathan, N. The structure of the Small Magellanic Cloud. The Astrophysical Journal. 1986, 301: 664. Bibcode:1986ApJ...301..664M. ISSN 0004-637X. doi:10.1086/163932.

[CrowlSarajedini2001-8] Crowl, Hugh H.; et al. The Line-of-Sight Depth of Populous Clusters in the Small Magellanic Cloud. The Astronomical Journal. 2001, 122 (1): 220–231. Bibcode:2001AJ....122..220C. ISSN 0004-6256. S2CID 45263795. arXiv:astro-ph/0104227v1 . doi:10.1086/321128.

[9] Murray, Claire E.; Hasselquist, Sten; Peek, Joshua E. G.; Christina Willecke Lindberg; Almeida, Andres; Choi, Yumi; Craig, Jessica E. M.; Denes, Helga; Dickey, John M.; Di Teodoro, Enrico M.; Federrath, Christoph; Gerrard, Isabella A.; Gibson, Steven J.; Leahy, Denis; Lee, Min-Young; Lynn, Callum; Yik Ki Ma; Marchal, Antoine; McClure-Griffiths, N. M.; Nidever, David; Nguyen, Hiep; Pingel, Nickolas M.; Tarantino, Elizabeth; Uscanga, Lucero; van Loon, Jacco Th. A Galactic Eclipse: The Small Magellanic Cloud is Forming Stars in Two, Superimposed Systems. 2023. arXiv:2312.07750  [astro-ph.GA].

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@@ 第1行： / 第1行： @@
+{{Infobox galaxy
-{{Galaxy
-| name = 小麥哲倫星系
+|name = 小麥哲倫星系（SMC）
-| image = [[File:VISTA’s view of the Small Magellanic Cloud.jpg|285px]]<small>
+|image = [[File:Small Magellanic Cloud (Digitized Sky Survey 2).jpg|300px]]
+|caption = 小麥哲倫星系<br/>(Source: [[數位化巡天項目]] 2)
-|[[可見光和紅外巡天望遠鏡|VISTA]]拍攝的小麥哲倫星系，右方是[[球狀星團]][[NGC 104]]<br /></small>
-| epoch = [[J2000]]
+|epoch = [[曆元#儒略年和J2000|J2000]]
-| type = SB(s)m pec<ref name="ned">{{cite web
+|type = SB(s)m pec<ref name="ned">{{cite web
-  | title=NASA/IPAC Extragalactic Database
+|title=NASA/IPAC 河外資料庫
+|work=小麥哲倫星系的結果
-  | work=Results for Small Magellanic Cloud
+|url=http://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=Small+Magellanic+Cloud&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
-  | url=http://nedwww.ipac.caltech.edu/
-  | accessdate=2006-12-01
+| access-date=2006-12-01 }}</ref>
-  | archive-date=2011-05-14
-  | archive-url=https://web.archive.org/web/20110514100451/http://nedwww.ipac.caltech.edu/
-  | dead-url=no
-  }}</ref>
 | ra = {{RA|00|52|44.8}}<ref name="ned" />
 | dec = {{DEC|-72|49|43}}<ref name="ned" />
+| dist_ly = [[1 E20 m|203.7 ± 1.5]] [[光年|kly]] (62.44 ± 0.47 [[秒差距|kpc]])<ref name=Graczyk2020>{{cite journal | doi=10.3847/1538-4357/abbb2b | title=A Distance Determination to the Small Magellanic Cloud with an Accuracy of Better than Two Percent Based on Late-type Eclipsing Binary Stars | year=2020 | last1=Graczyk | first1=Dariusz | last2=Pietrzyński | first2=Grzegorz | last3=Thompson | first3=Ian B. | last4=Gieren | first4=Wolfgang | last5=Zgirski | first5=Bartłomiej | last6=Villanova | first6=Sandro | last7=Górski | first7=Marek | last8=Wielgórski | first8=Piotr | last9=Karczmarek | first9=Paulina | last10=Narloch | first10=Weronika | last11=Pilecki | first11=Bogumił | last12=Taormina | first12=Monica | last13=Smolec | first13=Radosław | last14=Suchomska | first14=Ksenia | last15=Gallenne | first15=Alexandre | last16=Nardetto | first16=Nicolas | last17=Storm | first17=Jesper | last18=Kudritzki | first18=Rolf-Peter | last19=Kałuszyński | first19=Mikołaj | last20=Pych | first20=Wojciech | journal=The Astrophysical Journal | volume=904 | issue=1 | page=13 | arxiv=2010.08754 | bibcode=2020ApJ...904...13G | s2cid=224706414 | doi-access=free }}</ref>
-| dist_ly = [[1 E20 m|197 ± 9]] [[light-year|kly]] (61 ± 3 [[parsec|kpc]])<ref name="Gierenetal2005">{{cite journal
+|z = 0.000527<ref name="ned" />
- | author=Hilditch, R. W.; Howarth, I. D.; Harries, T. J.
+|appmag_v = 2.7<ref name="ned" />
- | year=2005
+|size_v = {{DEC|5|20}} × {{DEC|3|5}}<ref name="ned" />
- | title=Forty eclipsing binaries in the Small Magellanic Cloud: fundamental parameters and Cloud distance
+|size = {{convert|5.78|kpc|ly|sigfig=3|abbr=off}}<ref name="ned" /><br />（直徑：25.0 mag/arcsec<sup>2</sup> B-頻道等電位）<ref name=RC3>{{cite book | url=https://ui.adsabs.harvard.edu/abs/1991rc3..book.....D | bibcode=1991rc3..book.....D | year=1991 | title=Third Reference Catalogue of Bright Galaxies | last1=De Vaucouleurs | first1=Gerard | last2=De Vaucouleurs | first2=Antoinette | last3=Corwin | first3=Herold G. | last4=Buta | first4=Ronald J. | last5=Paturel | first5=Georges | last6=Fouque | first6=Pascal }}</ref>
- | journal=Monthly Notices of the Royal Astronomical Society
+|stars=30億<ref>{{cite book | author = Jonathan Powell | date = 17 September 2018 | title = Rare Astronomical Sights and Sounds | publisher = Springer | pages = | isbn = 978-3-319-97701-0 | url = https://books.google.com/books?id=Df5uDwAAQBAJ}}</ref>
- | volume=357
+|constellation name = [[杜鵑座]]和[[水蛇座]]
- | issue=1
+|notes = Companion dwarf to the [[銀河系]]的<br/>侏儒夥伴
- | pages=304-324
+|names = SMC,<ref name="ned" /> [[NGC天體|NGC]] 292<ref name="ned" />， [[主要星系目錄|PGC]] 3085<ref name="ned" />、Nubecula Minor<ref name="ned" />
- | url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2005MNRAS.357..304H }}</ref>
-| z = 158 ± 4 [[kilometer|km]]/[[second|s]]<ref name="ned" />
-| appmag_v = 2.7<ref name="ned" />
-| size_v = {{DEC|5|20}} × {{DEC|3|5}}<ref name="ned" />
-| constellation name = [[杜鹃座]]
-| notes = [[銀河系]]的矮衛星星系
-| names =  SMC,<ref name="ned" /> [[New General Catalogue|NGC]] 292,<ref name="ned" /> [[Principal Galaxies Catalogue|PGC]] 3085,<ref name="ned" /><br />Nubecula Minor<ref name="ned" />
 }}
-{{NGCInfoBox|NGCID=NGC 292|發現者=麥哲倫|發現日期=1521年-月-日|其他編號=ESO 29-21,A 0051-73,IRAS00510-7306|曆元=J2000.0|赤經=52分38秒|赤緯=-72°48'0""|星座=杜鹃座|星體=不規則星系|星等=2.2|表面亮度=14.1|藍等=2.8}}
 '''小麥哲倫星系'''（SMC）是一個環繞著[[銀河系]]的[[矮星系]]<ref name="#1">{{Cite web |url=http://antwrp.gsfc.nasa.gov/apod/ap050617.html |title=存档副本 |accessdate=2007-02-10 |archive-date=2010-08-08 |archive-url=https://web.archive.org/web/20100808205833/http://antwrp.gsfc.nasa.gov/apod/ap050617.html |dead-url=no }}</ref>，擁有數億顆的恆星 <ref name="#1"/>。

2024年1月17日 (三) 17:23的版本

迷你麥哲倫雲

相關條目

參考資料

外部連結