An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian
فرهنگ ریشه شناختی اخترشناسی-اخترفیزیک
M. Heydari-Malayeri - Paris Observatory
Homepagebinary star setâre-ye dorin Fr.: étoile binaire Two stars gravitationally bound to each other, so that they revolve around their common center of gravity. → double star; → spectroscopic binary. → binary; → star. |
close binary star setâre-ye dorin-e kip Fr.: étoile binaire serrée A binary system in which the separation of the component stars is comparable to their diameters, so that they influence each other's evolution most commonly by the tidal forces. |
compact binary star system râžmân-e dorin-e hampak Fr.: système binaire compact A binary star system which is composed of a collapsed object
(→ degenerate dwarf, → neutron star,
or → black hole) in orbit with a low-mass (≤ 0.5 Msol)
secondary star, wherein the collapsed star → accretes
matter from its → companion.
These two objects form a binary system of overall dimensions
106 km with an orbital period of only hours or less.
See also:
→ X-ray binary. |
tightly bound binary star system râžmân-e setâre-yi-ye dorin-e tang bandide Fr.: système d'étoiles binaire très lié → tight; → bound system; → binary star. |
