Glossary term: 盤狀星系
Description: 盤狀星系是一類星系，其特徵是擁有一個由恆星、氣體和塵埃組成的扁平結構，這些成分都圍繞星系中心做共面圓周運動。盤狀星系中通常存在螺旋臂及相關的恆星形成活動。在大多數星系分類體系中，盤狀星系與橢圓星系、不規則星系和矮星系有所區別。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
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In Other Languages
- 阿拉伯語: المجرة القرصية
- 德語: Scheibengalaxie
- 英語: Disk Galaxy
- 法語: Galaxie à disque
- 義大利語: Galassia a disco
- 日語: 円盤銀河 (external link)
- 韓語: 원반은하
- 巴西葡萄牙語: Disco Galaxy
- 簡體中文: 盘状星系
Related Media
草帽星系
Caption: 由於這個著名的星系M104 與墨西哥帽子非常相似，因此經常被稱為 "草帽星系"。它之所以看起來是這個樣子，是由於我們觀測的視角幾乎平行於薄盤的平面，薄盤/星系盤 被星系的核球所照亮。星系盤和核球都含有恆星，但核球中的恆星往往比較老。星系盤中蘊含有大量的塵埃和氣體，從而形成了陰影。M104 位於室女座，距離我們大約 50 光年。圖中可見的小點有些是前景恆星，有些是背景星系，但實際上大部分都是球狀星團，它們是與草帽星系相關的緻密大質量恆星團。
Credit: ESO/P.巴特爾
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License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
A visible light image of the Andromeda Galaxy
Caption: The Andromeda Galaxy viewed in visible light. Like our Milky Way, Andromeda is a barred spiral galaxy. Here we can see its bright core and spiral disk. The glow from the stars in the disk is interrupted by lanes of dust that form part of its spiral structure.
Andromeda is the largest galaxy in the Local Group of galaxies that includes the Milky Way.
To the left of the core and just above the disk we see the dwarf galaxy M32 and to the right and below the disk we see the dwarf galaxy M110. These are both satellite galaxies of the Andromeda Galaxy.
Credit: Torben Hansen
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License: CC-BY-2.0 Creative Commons Attribution 2.0 Generic icons
The Lenticular Galaxy NGC 2787
Caption: The lenticular galaxy NGC 2787. This galaxy is a disk galaxy but lacks the large, dominant spiral arm structure seen in the disks of spiral galaxies. Its core is very bright compared to the core of a spiral galaxy. Thin rings of dust can be seen in the galaxy's disk.
Credit: NASA/ESA and The Hubble Heritage Team
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License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
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