An Etymological Dictionary of Astronomy and Astrophysics

A → Wolf-Rayet star whose spectrum shows emission lines of carbon and strong emission lines of oxygen O VI 3811-34 Å. In theoretical models, a W-R star whose carbon abundance at surface is larger than nitrogen abundance and has the abundance ratio (C + O) / He > 1 (in number).

See also: W short for Wolf-Rayet star, O for → oxygen.