imported>Hikaru Genji：/* 外部連結 */

2025-05-03T07:38:58Z

外部連結

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{{Infobox globular cluster
| name = NGC 3201
| image = [[Image:NGC 3201 Hubble WikiSky.jpg|300px]]
| caption = [[哈柏太空望遠鏡]]拍攝的NGC 3201；視野3.5′
| credit = [[NASA]]/[[太空望遠鏡科學研究所|STScI]]/[[WikiSky]]
| epoch = [[J2000]]
| class = X<ref name=hcob849_11/>
| constellation = [[船帆座]]
| ra = {{RA|10|17|36.82}}<ref name=aj140_6_1830/>
| dec = {{DEC|–46|24|44.9}}<ref name=aj140_6_1830/>
| dist_ly = {{Convert|16.3|kly|kpc|abbr=on|lk=on}}<ref name=aj139_2_476/>
| appmag_v = +8.24<ref name="simbad" />
| size_v = 18′.2
| mass_msol = {{Val|2.54|e=5}}<ref name=apj742_1_51/>
| radius_ly = 40 [[光年|ly]]<ref>distance × sin( diameter_angle / 2 ) = 40 ly. radius</ref>
| v_hb = 14.77
| metal_fe = –1.24<ref name=mnras404_3_1203/>
| age = 10.24 [[年|Gyr]]<ref name=mnras404_3_1203/>
| notes =
| names = GCl 15,<ref name="simbad" /> GC 2068, h 3238, Dun 445, Bennett 44, [[科德韋爾深空天體表|Caldwell]] 79<ref name=dsoc/>
}}
'''NGC 3201'''，即'''科德韋爾79'''（'''[[科德韋爾深空天體表|Caldwell]] 79'''），是位於[[船帆座]]，在低銀緯度上的[[球狀星團]]。它的恆星向中心的凝聚度非常低<ref name="xiv0509085"/>。該星團由[[詹姆士·敦洛普]]在1826年5月28日發現，並收錄於他的1827年天體目錄中。他對NGC 3201的描述為「一個相當大而明亮的星雲，角直徑約為4′或 5′，恆星逐漸向中心凝聚，並且在望遠鏡中容易被分辨出來。它的形狀非常不規則，並且恆星在其南方部分分布相當分散」<ref name=omeara2002/>

== 概要 ==
NGC 3201的[[徑向速度]]是不尋常高的490 km/s，高於其他已知的星團。而它的對應[[本動速度]]為240 km/s。NGC 3201的運動速度雖然高，但仍低於[[銀河系]]的[[宇宙速度#第四宇宙速度|逃逸速度]]<ref name=omeara2002/>。NGC 3201距離太陽約16300光年，質量估計為太陽的254000倍<ref name=aj139_2_476/>，年齡為102.4億年<ref name=mnras404_3_1203/>。

NGC 3201內的恆星分布並不均勻，並且隨著與核心的距離變化。恆星的[[有效溫度]]變化隨著與核心的距離呈現正相關。較高溫恆星距離核心較遠，而低溫紅色恆星則聚集於核心附近。NGC 3201和[[M4_(球狀星團)|M4]]直到2010年是已知僅有的兩個恆星分布狀況如此不均勻的星團<ref name=aaa512_L6/>。

== 圖片集 ==
<gallery>
Caldwell 79.jpg|天文學家發現NGC 3201核心處的黑洞Astronomers discovered a black hole at the heart of NGC 3201.<ref>{{cite web|title=Standout stars|url=http://www.spacetelescope.org/images/potw1804a/|website=www.spacetelescope.org|accessdate=22 January 2018|archive-date=2018-02-04|archive-url=https://web.archive.org/web/20180204214914/http://www.spacetelescope.org/images/potw1804a/|dead-url=no}}</ref>
Artist’s impression of the black hole binary system in NGC 3201.jpg|畫家筆下的NGC 3201核心[[雙黑洞]]系統想像圖。<ref>{{cite web|title=Odd Behaviour of Star Reveals Lonely Black Hole Hiding in Giant Star Cluster|url=https://www.eso.org/public/news/eso1802/|website=www.eso.org|accessdate=18 January 2018|archive-date=2018-03-07|archive-url=https://web.archive.org/web/20180307091550/http://www.eso.org/public/news/eso1802/|dead-url=no}}</ref>
NGC 3201.jpg|[[拉西拉天文台]]口徑2.2公尺[[MPG/ESO望遠鏡]]的廣角影像器（Wide Field Imager，WFI）拍攝的NGC 3201彩色合成影像。
</gallery>

== 參考資料 ==
{{Reflist|refs=

<ref name=aj140_6_1830>{{citation | display-authors=1 | last1=Goldsbury | first1=Ryan | last2=Richer | first2=Harvey B. | last3=Anderson | first3=Jay | last4=Dotter | first4=Aaron | last5=Sarajedini | first5=Ata | last6=Woodley | first6=Kristin | title=The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters | journal=The Astronomical Journal | volume=140 | issue=6 | pages=1830–1837 |date=December 2010 | doi=10.1088/0004-6256/140/6/1830 | bibcode=2010AJ....140.1830G | postscript=. |arxiv = 1008.2755 }}</ref>

<ref name="simbad">{{citation | title=SIMBAD Astronomical Object Database | work=Results for NGC 3201 | url=http://simbad.u-strasbg.fr/Simbad | accessdate=2006-11-16 | postscript=. | archive-date=2019-05-01 | archive-url=https://web.archive.org/web/20190501023034/http://simbad.u-strasbg.fr/simbad/ | dead-url=no }}</ref>

<ref name=hcob849_11>{{citation | last1=Shapley | first1=Harlow | last2=Sawyer | first2=Helen B. | title=A Classification of Globular Clusters | journal=Harvard College Observatory Bulletin | issue=849 | pages=11–14 |date=August 1927 | bibcode=1927BHarO.849...11S | postscript=. }}</ref>

<ref name=mnras404_3_1203>{{citation | last1=Forbes | first1=Duncan A. | last2=Bridges | first2=Terry | title=Accreted versus in situ Milky Way globular clusters | journal=[[皇家天文學會月報|Monthly Notices of the Royal Astronomical Society]] | volume=404 | issue=3 | pages=1203–1214 |date=May 2010 | doi=10.1111/j.1365-2966.2010.16373.x | bibcode=2010MNRAS.404.1203F | postscript=. |arxiv = 1001.4289 }}</ref>

<ref name=aj139_2_476>{{citation | display-authors=1 | last1=Paust | first1=Nathaniel E. Q. | last2=Reid | first2=I. Neill | last3=Piotto | first3=Giampaolo | last4=Aparicio | first4=Antonio | last5=Anderson | first5=Jay | last6=Sarajedini | first6=Ata | last7=Bedin | first7=Luigi R. | last8=Chaboyer | first8=Brian | last9=Dotter | first9=Aaron | last10=Hempel | first10=Maren | last11=Majewski | first11=Steven | last12=Marín-Franch | first12=A. | last13=Milone | first13=Antonino | last14=Rosenberg | first14=Alfred | last15=Siegel | first15=Michael | title=The ACS Survey of Galactic Globular Clusters. VIII. Effects of Environment on Globular Cluster Global Mass Functions | journal=The Astronomical Journal | volume= 139 | issue= 2 | pages= 476–491 |date=February 2010 | doi=10.1088/0004-6256/139/2/476 | bibcode=2010AJ....139..476P | postscript=. }}</ref>

<ref name=apj742_1_51>{{citation | display-authors=1 | last1=Boyles | first1=J. | last2=Lorimer | first2=D. R. | last3=Turk | first3=P. J. | last4=Mnatsakanov | first4=R. | last5=Lynch | first5=R. S. | last6=Ransom | first6=S. M. | last7=Freire | first7=P. C. | last8=Belczynski | first8=K. | title=Young Radio Pulsars in Galactic Globular Clusters | journal=The Astrophysical Journal | volume=742 | issue=1 | page=51 |date=November 2011 | doi=10.1088/0004-637X/742/1/51 | bibcode=2011ApJ...742...51B | postscript=. |arxiv = 1108.4402 }}</ref>

<ref name=omeara2002>{{citation | first1=Stephen James | last1=O'Meara | title=The Caldwell Objects | series=Deep-Sky Companions | publisher=[[Cambridge University Press]] | date=2002 | isbn=0521827965 | pages=314–315 | url=https://books.google.com/books?id=3Hg6YHgx9nAC&pg=PA314 | postscript=. }}</ref>

<ref name="xiv0509085">{{citation | title=XMM-Newton X-ray and optical observations of the globular clusters M 55 and NGC 3201 | first1=N. A. | last1=Webb | first2=P. J. | last2=Wheatley | first3=D. | last3=Barret | date=2005 | arxiv=astro-ph/0509085 | postscript=. |bibcode = 2005yCat..34450155W |doi = 10.1051/0004-6361:20053010 }}</ref>

<ref name=aaa512_L6>{{citation | display-authors=1 | last1=Kravtsov | first1=V. | last2=Alcaíno | first2=G. | last3=Marconi | first3=G. | last4=Alvarado | first4=F. | title=Evidence of the inhomogeneity of the stellar population in the differentially reddened globular cluster NGC 3201 | journal=Astronomy and Astrophysics | volume=512 | page=L6 |date=March 2010 | doi=10.1051/0004-6361/200913749 | bibcode=2010A&A...512L...6K | postscript=. |arxiv = 1004.5583 }}</ref>

<ref name=dsoc>{{citation | title=NGC 3201 | work=Deep Sky Observer's Companion | url=http://www.docdb.net/show_object.php?id=ngc_3201 | accessdate=2012-04-28 | postscript=. | archive-date=2017-09-03 | archive-url=https://web.archive.org/web/20170903013833/http://www.docdb.net/show_object.php?id=ngc_3201 | dead-url=no }}</ref>

}}

== 外部連結 ==
* [http://spider.seds.org/ngc/ngc.cgi?3201 Globular Cluster NGC 3201 at SEDS pages]{{Wayback|url=http://spider.seds.org/ngc/ngc.cgi?3201 |date=20180123072857 }}
* {{WikiSky}}
* [http://www.docdb.net/show_object.php?id=ngc_3201 NGC 3201]{{Wayback|url=http://www.docdb.net/show_object.php?id=ngc_3201 |date=20170903013833 }} at '''DOCdb''' (Deep Sky Observer's Companion)

{{Sky|10|17|36.76|-|46|24|40.4|15000}}

{{Ngc35}}
{{船帆座}}
{{科德韋爾天體}}

[[Category:球狀星團]]
[[Category:船帆座NGC天體|3201]]
[[Category:科德韋爾天體|079b]]
[[Category:1826年发现的天体|18260501]]

NGC 3201 - 版本历史

imported>Hikaru Genji：​/* 外部連結 */

imported>Hikaru Genji：/* 外部連結 */