An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 6 Search : feature
absorption feature
  آرنگ ِ درشم   
ârang-e daršam

Fr.: motif d'absorption   

A dip in a spectrum indicating that light has been absorbed on the path from the emitting source to the observer. It may be a line, corresponding to a well-defined atomic or molecular transition, or a more complex feature whose physical origin is not necessarily understood.

absorption; → feature.

coronal features
  آرنگ‌های ِ هورتاجی   
âranghâ-ye hurtâji

Fr.: motifs coronaux   

Several phenomena occurring in the Sun's corona, such as a → helmet streamer, → polar plume, → coronal loop, → coronal hole.

coronal; → feature.

dust feature
  آرنگ ِ غبار   
ârang-e qobâr

Fr.: marque de poussière, signature de ~, motif spectral de ~   

An emission or absorption mark in the spectrum of an astronomical object, the origin of which is attributed to the presence of dust in the object or on the line of sight.

dust; → feature.

emission feature
  آرنگ ِ گسیل   
ârang-e gosil

Fr.: motif d'émission   

Any emission mark in the spectrum of a celestial object resulting from line formation or of unknown origin.

emission; → feature.

feature
  آرنگ   
ârang

Fr.: motif   

A prominent or conspicuous part or characteristic. → absorption feature; → coronal features; → dust feature; → emission feature.

From O.Fr. faiture "fashion, shape, form," from L. facura "a formation," from facere "to make, do, perform" (cf. Fr. faire, Sp. hacer), from PIE base *dhe- "to put, to do" (cf. Mod.Pers. dâdan "to give;" O.Pers./Av. dā- "to give, grant, yield," dadāiti "he gives; puts;" Skt. dadáti "puts, places;" Hitt. dai- "to place;" Gk. tithenai "to put, set, place;" Lith. deti "to put;" Czech diti, Pol. dziac', Rus. det' "to hide," delat' "to do;" O.H.G. tuon, Ger. tun, O.E. don "to do").

Ârang "color; mode, form, manner," cf. Av. *iringa- "sign, mark" in haptôiringa- "with seven marks," from hapto- "seven," + iringa-; Mid.Pers. haptiring, Mod.Pers. haftowrang "the constellation of Great Bear;" cf. Skt. linga- "mark, token, sign."

spectral feature
  آرنگ ِ بیناب، ~ بینابی   
ârang-e binâb, ~ binâbi

Fr.: motif spectral   

An emission or absorption mark in the spectrum of an astronomical object, of known or unknown origin, usually with complex structure.

spectral; → feature.