An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian
فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک
M. Heydari-Malayeri - Paris Observatory
HomepageNumber of Results: 2 Search : spectroscopic binary
double-lined spectroscopic binary dorin-e doxatte-ye binâbnemâyik Fr.: binaire spectroscopique à double raies Same as → double-lined binary. → double; → line; → spectroscopic; → binary. |
spectroscopic binary dorin-e binâbnemâyi Fr.: binaire spectroscopique A binary system that cannot be resolved by a telescope, but can be identified by means of the Doppler shift of the spectral lines. As stars revolve, they alternately approach and recede in the line of sight. This motion is shown up in their spectra as a periodic oscillation or doubling of spectral lines. → spectroscopic; → binary. |
