English Dictionary

dwarf spheroidal galaxy

名詞

(astronomy) A faint galaxy, devoid of gas, having a higher than normal proportion of dark matter; especially those that orbit the Milky Way and Andromeda

日本語の意味

天文学分野の用語。ガスをほとんど持たず、通常以上の割合で暗黒物質を有する輝度が低い銀河。特に、天の川銀河やアンドロメダ銀河の周りを公転する銀河を指す。

The nearby dwarf spheroidal galaxy offers a rare opportunity to study dark matter without the complication of gas and star formation.

近くの矮小楕円銀河はガスがほとんどなく、異常に高い割合のダークマターを含んでいるため、ガスや星形成の影響を受けずにダークマターを研究する稀な機会を提供する。

意味（1）

(astronomy) A faint galaxy, devoid of gas, having a higher than normal proportion of dark matter; especially those that orbit the Milky Way and Andromeda

The inventory keeps growing, and the latest recruit is a dwarf spheroidal galaxy, meaning no gas and not many more than 10⁶⁻⁷ stars, that has the bad luck to be almost on the far side of the galactic centre from us.

dwarf spheroidal galaxies （ plural ）