...If the velocity curve is not known, the dynamic parallax can be found by estimating the sum of the masses separately. For a moving star group, the direction of motion can be determined from the right ascension and declination of the convergence point of the motion, so the motion group parallax of each star can be found by observing the radial velocity and proper motion. For eclipsing variable stars, the radius and other parameters can be found by analyzing the light curve, using the distance between two stars as a unit, and if the velocity curve is obtained, the distance between the two stars can be found by integrating it. ... *Some of the terminology explanations that refer to "kinetic group parallax" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…速度曲線が知られていない場合は質量の和を別に推定すれば力学的な視差が求まる。運動星群では,運動の収束点の赤経,赤緯から運動の方向がわかるから,視線速度と固有運動を観測すればそれぞれの星の運動星群視差がわかる。食変光星については光度曲線の解析から2星間の距離を単位として半径などが求まり,もし速度曲線が得られればこれを積分して2星間の距離が求まる。… ※「運動星群視差」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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