An Etymological Dictionary of Astronomy and Astrophysics
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فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک

M. Heydari-Malayeri    -    Paris Observatory

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Number of Results: 2 Search : auroral line
auroral line
  خط ِ اوشه‌ای   
xatt-e uše-yi

Fr.: raie aurorale   

1) A prominent → forbidden line in the spectra of the aurora at wavelengths of 5577 and 6300 Å giving the aurora its characteristic green and red colors. Both are emitted by atomic oxygen, the former in its transition from the second lowest excited electronic state (1S) to the lowest excited electronic state (1D), the latter in its transition from the lowest excited electronic state (1D) to the atomic ground state (3P).
2) A forbidden line emitted by interstellar ionized gas by several atomic species (O, O+, O++, N+, S++, etc.) corresponding to the transition from the state 1S to 1D. → forbidden line; → nebular line; → transauroral line.

auroral; → line.

transauroral line
  خط ِ ترا-اوشه‌ای   
xatt-e tarâ-uše-yi

Fr.: raie transaurorale   

A forbidden line emitted by interstellar ionized gas by several atomic species (O, O+, O++, N+, S++, etc.) corresponding to the transition from the electronic state 1S to 3P. Examples are the ultraviolet line of the doubly ionized oxygen [O III] at 2321 A and [N II] 3063 A. → auroral line; → forbidden line; → nebular line.

trans-; → auroral line.