亮巨星在约克光谱分类中的光度属于Ⅱ,是介于超巨星和巨星之间的恒星。一般来说,是光度比巨星明亮但又达不到超巨星程度的恒星。亮巨星的绝对星等比同光谱的巨星更亮,一般来说亮巨星的绝对目视星等高于-1.8等。
并不是所有的城镇都有实力引入国际知名巨星,许多亮灯仪式由前电视才艺竞赛参赛者进行。
Not all towns can afford to bring in an internationally-known star, so many switch-on ceremonies are handled by ex-TV talent show contestants.
亮蓝巨星组成的年轻星团闪耀在星系的旋臂上,同时也发现了垂死的红巨星。
Clusters of young bright blue stars highlight the galaxy's spiral arms. In contrast, red giant stars in the process of dying are also found.
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