Berkeley 90. III. Cluster parameters
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The open cluster Berkeley 90 is the home to one of the most massive binary systems in the Galaxy, LS III +46 11, formed by two identical, very massive stars (O3.5 If + O3.5 If),...
伯克利90疏散星团是银河系内质量顶尖的双星系统之一LS Ⅲ +46 11的宿主天体,该双星系统由两颗完全相同、质量极高的O3.5 If型恒星构成(O3.5 If + O3.5 If),……



