星系盤

Multi tool use

本條目介紹的是星系中扁平的圓盤部分。關於盤與星系的類型,請見“
圓盤星系”。
星系盤是圓盤星系,例如螺旋星系或透鏡星系的一部分。
星系盤是存在於包含螺旋、棒狀等圓盤星系盤狀物的平面部分。星系盤傾向於比核球和暈有著更多的氣體、塵埃和年輕的恆星。
星系盤的主要成分是氣體、塵埃和恆星。星系盤的氣體和塵埃元件稱為氣體盤,恆星為元件組成的星系盤稱為恆星盤。
星星不一致的軌道速度
主条目:星系自轉問題
没人注意到多數星系盤中恆星的軌道速度與依據星系發光物質質量計算的結果不一致。針對這個問題的一個可能解釋是不發光的暗物質。
相關條目
- 星系扁球體
- 銀冕
- 塔利-費舍爾關係
MOND(修正牛頓力學)
進階讀物
P.c. van der Kruit, K.c. Freeman. Galaxy Disks. Annual Review of Astronomy and Astrophysics. 2011-08-18, 49 (1): 301–371 [2018-04-02]. ISSN 0066-4146. doi:10.1146/annurev-astro-083109-153241.
星系
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形態學 |
- 圓盤星系
矮星系
不規則星系
透鏡星系
- 特殊星系
環星系
螺旋星系
橢圓星系
巨大星系
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構造 |
- 棒
- 核球
- 暗物質暈
- 盤
星系暈
- 銀河平面
- 星際物質
- 原星系
- 螺旋臂
- 超大質量黑洞
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活躍核 |
- 相對論性噴流
- 類星體
- 西佛星系
- LINER星系
電波星系
- 耀变体
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活躍星系 |
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低活動 |
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交互作用 |
- 恆星流
交互作用星系
- 衛星星系
星系群和星系團
- 超星系團
星系絲狀結構
- 視場星系
- 空洞星系
- 空洞和超空洞
- 星系潮汐
- 星系雲
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列表 |
星系
- 星系團
- 超星系团
- 超大類星體群
- 类星体
- 空洞
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相關條目 |
- 暗星系
- 暗藍星系
- 星系天文學
- 銀河系天文學
- 銀心
- 银道坐标系
- 星系的形成和演化
- 星系際塵埃
- 星系際旅行
- 星系際恆星
- 揭示計畫
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