Shell star variables. Pleione and Gamma Cassiopeiae itself are both variable stars that have intermittent shell episodes where strong shell features appear in the spectrum and the brightness increases or decreases significantly. At other times the shell is not detectable in the spectrum, and even the emission lines may disappear. Shell star A shell star is a star having a spectrum that shows extremely broad absorption lines, plus some very narrow absorption lines. They typically also show some emission lines, usually from the Balmer series but occasionally of other lines. The broad absorption lines are due to rapid rotation of the photosphere,
Sora (Korean given name) Sora (Korean given name) So-ra is a Korean feminine given name. Unlike most Korean given names, which are composed of two single-syllable Sino-Korean morphemes each written with one hanja, So-ra is an indigenous Korean name, a single two-syllable word meaning "conch shell". It is one of a number of such native names (called 고유어 이름) that have become more popular in South Korea in recent decades. In some cases, however, parents also choose to register hanja to represent the name, picking them solely for their pronunciation (for example, , with hanja meaning "sunlight" and "net", respectively). There are 45 hanja