Orbits of 4 double-lined spectroscopic binaries

Improved orbital elements for four A-star double-lined spectroscopic binaries have been determined with numerous new radial velocities. Three of the four systems, HR 1528, 2...借助大量新增的径向速度（radial velocities），我们为4颗A型星（A-star）双谱线分光双星（double-lined spectroscopic binaries）测定了改进后的轨道根数（orbital elements）。4个系统中的3个——HR 1528、2……