chemically peculiar star
setâre-ye šimikâné afd
Fr.: étoile chimiquement particulière
A → main sequence star of
→ spectral type A or B
(→ A-type star, → B-type star)
identified by the presence of anomalously strong or weak
→ absorption lines of certain elements
in their spectra.
CP stars have been divided into four main classes on the basis of their
spectra: 1) non-magnetic metallic-lined (CP1,
→ Am star), magnetic (CP2,
→ Ap star), non-magnetic mercury-manganese (CP3,
→ HgMn star), and
helium-weak (CP4, → He-weak star).
From L. peculiaris "of one's own (property)," from peculium "private property," from pecu "flock, farm animals, cattle," pecunia "money, property;" cf. Av. pasu-, fšu- "sheep;" Mid.Pers. pâh, pasvīk "cattle;" Mid./Mod.Pers. šu/ša in šupân/šabân "cattle keeper, shepherd;" Pers. dialects Laki and Tâti pas "sheep;" Skt. paśu- "cattle;" Goth. faihu "money, fortune;" O.E. feoh "cattle, money;" Ger. Vieh "cattle;" Lith. pekus "cattle;" PIE base *peku- "cattle."
Afd "peculiar; strange" (Dehxodâ), from Mid.Pers. afd, awd "peculiar, strange."
Fr.: galaxie particulière
An irregular galaxy that has an abnormal shape (neither elliptical, spiral, nor lenticular) and/or has another unusual characteristic.
Fr.: mouvement particulier
1) The true motion of a star with respect to the Local Standard
of Rest. → proper motion.
Fr.: étoile particulière
A star with a spectrum that cannot be conveniently fitted into any of the standard → spectral classifications.
Fr.: vitesse particulière
1) Velocity with respect to the Local Standard of Rest.
The quality or condition of being peculiar.
Noun form of → peculiar.