imported>凌雲：修飾語句

2022-04-08T18:39:17Z

修飾語句

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{{Galaxy
| image = [[File:Messier89 - HST - Potw1902a.tif|280px]]<br /><small>圖中右上角的明亮橢圓星系即為梅西耶89</small>
| name = 梅西耶89
| epoch = [[J2000]]
| type = [[橢圓星系]]<ref name="ned">{{cite web
| title=NASA/IPAC Extragalactic Database
| work=Results for NGC 4552
| url=http://nedwww.ipac.caltech.edu/
| accessdate=2006-10-24
| archive-date=2018-12-25
| archive-url=https://web.archive.org/web/20181225045153/http://ned.ipac.caltech.edu/
| dead-url=no
}}</ref>
| ra = {{RA|12|35|39.8}}<ref name="ned" />
| dec = {{DEC|+12|33|23}}<ref name="ned" />
| dist_ly = 50 ± 3[[光年|Mly]] (15.3 ± 1.0 [[秒差距|Mpc]])<ref name="tonryetal2001">{{cite journal
| author=J. L. Tonry, A. Dressler, J. P. Blakeslee, E. A. Ajhar, A. B. Fletcher, G. A. Luppino, M. R. Metzger, C. B. Moore
| title=The SBF Survey of Galaxy Distances. IV. SBF Magnitudes, Colors, and Distances
| journal=Astrophysical Journal
| year=2001
| volume=546
| issue=2
| pages=681-693
| url=http://adsabs.harvard.edu/abs/2001ApJ...546..681T
| access-date=2008-03-25
| archive-date=2008-02-14
| archive-url=https://web.archive.org/web/20080214211129/http://adsabs.harvard.edu/abs/2001ApJ...546..681T
| dead-url=no
}}</ref>
| z = 340 ± 4 [[公里]]／秒<ref name="ned" />
| appmag_v = 10.7<ref name="ned" />
| size_v = 5′.1 × 4′.7<ref name="ned" />
| constellation name = [[室女座]]
| notes =
| names = [[New General Catalogue|NGC]] 4552,<ref name="ned" /> [[Uppsala General Catalogue|UGC]] 7760,<ref name="ned" /> [[Principal Galaxies Catalogue|PGC]] 41968<ref name="ned" />
}}

'''梅西耶89'''（也稱為'''M89'''或'''NGC 4552'''）是位於[[室女座]]的一個[[橢圓星系]]，在1781年3月18日被[[查爾斯·梅西耶|梅西耶]]發現，是[[室女座星系團]]的成員之一<ref>{{Cite web |url=http://www.seds.org/messier/m/m089.html |title=Elliptical Galaxy M89 @ SEDS Messier pages |accessdate=2008-03-25 |archive-date=2008-03-05 |archive-url=https://web.archive.org/web/20080305022144/http://seds.org/Messier/m/m089.html |dead-url=no }}</ref>。

== 不尋常的特色 ==
現在的觀測顯示M89的外形機乎是接近理想的[[球體|球形]]。相對於其他瘦長的[[橢圓星系]]，這是很異常的形狀。然而，這也可能是這個星系的指向正好朝向著地球，實際上它的型狀還是橢圓的。這個星系的外圍有氣體和塵埃擴散至150,000光年遠，並且還有被加熱的粒子被噴射至100,000光年的距離外。這些積像顯示這個星系可能是[[類星體]]或[[電波星系]]<ref>{{Cite web |url=http://www.seasky.org/astronomy/astronomy_messier_81to90.html |title=Messier Objects 81-90 @ Sea and Sky |accessdate=2008-03-25 |archive-date=2010-06-16 |archive-url=https://web.archive.org/web/20100616192103/http://seasky.org/astronomy/astronomy_messier_81to90.html |dead-url=no }}</ref>。

M89也有為數眾多的[[球狀星團]]，相較於[[銀河系]]，在2006年測量至10′只有150-200個，但估計M89在25′擁有2,000± 700 個球狀星團<ref name="Tamuraetal2006">{{cite journal
| author=Tamura, Naoyuki; Sharples, Ray M.; Arimoto, Nobuo; Onodera, Masato; Ohta, Kouji; Yamada, Yoshihiko
| title=A Subaru/Suprime-Cam wide-field survey of globular cluster populations around M87 - I. Observation, data analysis and luminosity function
| journal=Monthly Notices of the Royal Astronomical Society
| volume=Online Early
| year=2006
| url=http://adsabs.harvard.edu/cgi-bin/nph-bib_query?doi=10.1111%2Fj.1365-2966.2006.11067.x
| access-date=2008-03-25
| archive-date=2020-03-12
| archive-url=https://web.archive.org/web/20200312004750/https://ui.adsabs.harvard.edu/abs/?doi=10.1111%2Fj.1365-2966.2006.11067.x
| dead-url=no
}}</ref>。

== 外部連結 ==
* [http://www.wikisky.org/?object=M89&img_source=SDSS&zoom=10 Wikisky.org: SDSS image, M89] {{Wayback|url=http://www.wikisky.org/?object=M89&img_source=SDSS&zoom=10 |date=20200202060906 }}

== 參考資料 ==
{{reflist}}

{{Virgo}}
{{梅西耶天体}}

[[Category:橢圓星系|Messier 089]]
[[Category:室女座星系團|Messier 089]]
[[Category:室女座|Messier 089]]
[[Category:梅西耶天體|089]]
[[Category:NGC天體|Messier 089]]
[[Category:UGC天體|07760]]
[[Category:PGC天體|41968]]

M89 - 版本历史

imported>凌雲：​修飾語句

imported>凌雲：修飾語句