a small, old, relatively cool star; approximately 100 times the mass of Jupiter
red dwarf的用法和样例:
例句
The rising red dwarf star shows expected stellar magnetic activity which includes dramatic and violent prominences. 上升中的红矮星有著可预期的磁场活动,包含了激烈的日珥现象。
The characteristics of the lensing event show that the planet is in a Jupiter-sized orbit around its parent red star. 这个透镜现象的特征显示出,行星以双红矮星为中心的运行轨迹与木星的轨迹类似。