Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

shell star




A hot main-sequence star, usually of spectral class B, A, or F, whose spectrum shows bright emission lines presumed to be due to a gaseous ring or shell surrounding the star. Variable shell stars, in which the ejection of a shell is accompanied by a temporary fade, are known as Gamma Cassiopeiae stars.


Related categories

   • TYPES OF STARS
   • STELLAR ASTROPHYSICS