An Etymological Dictionary of Astronomy and Astrophysics

A → massive star spectrum whose principal defining characteristics is the presence of C III 4647, 4650, 4651 emission lines with strength comparable to that of N III 4634, 4640, 4642. This category was introduced by Walborn (1972) to describe two well-known peculiar stars, HD 108 and HD 148937. → Of star

See also: → Of star; the question mark was intended to denote doubt that these stars are normal Of supergiants; p for “peculiar.”