Shell star 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, the emission lines from an equatorial disk, and the narrow absorption lines are produced when the disc is seen nearly edge-on. Shell stars have spectral types O7.5 to F5, with rotation velocities of 200–300 km/s, not far from the point when the rotational acceleration would disrupt the star.
Iselilja (given name) Iselilja (given name) Iselilja is a Norwegian feminine given name. In 2015, in Norway 17 people had the name as a first name and 15 people had it as a middle name, according to SSB's name statistics. "Iselilja" is mentioned in the medieval Norwegian ballad , a song that has been recorded and released by Alf Cranner on the album "Rosemalt Sound" (1967), by the folk-rock band on "" (1978), and by Norwegian folk music band Gåte on their studio album "Iselilja" (2004) and their live album "Liva" (2006). The name is, according to Norwegian historian Harald S. Næss in