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,
Mira (given name) Mira (given name) Mira is a feminine given name with varying meanings. In the Romance languages, it is related to the Latin words for "wonder" and "wonderful." In South Slavic languages, it means "peace" and is often used as part of a longer name, such as Miroslava (masculine form: Miroslav) or Sławomira (masculine form: Sławomir). In Albanian language, it means "goodness" or "kindness". In Sanskrit, it means "ocean", "sea", "limit" or "boundary" In Hebrew, it is a derivative of Miriam or the female equivalent of Meir, meaning light. It is distinct from "Myra" which has a different origin. People with