单词 | RR Lyrae stars |
释义 | RR Lyrae stars [¦är¦är `lī·rē ´stärz] ASTRONOMY Pulsating variable stars with a period of 0.05-1.2 days in the halo population of the Milky Way Galaxy; color is white, and they are mostly stars of spectral class A. Also known as cluster cepheids; cluster variables. |
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