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,
Ashton (given name) Ashton (given name) Ashton is a given name derived from an English surname derived from a place name meaning "ash tree town." The name is in use for both boys and girls in the United States. Ashton was used far more often on American females from years 1986–1997. The popularity for girls was from the Terri Garber character "Ashton Main" on 1985's North and South (miniseries). Since Ashton Kutcher's debut on television and film in the late 1990s, the name is now in favor more for boys, as it was always before 1986. Ashton was the 124th most popular name