为太阳新发现的这个邻居和其他五个超冷褐矮星都属于一个称为“Y矮星”的系列，是“不成功”的恒星。
The sun's newfound neighbor and five other supercool brown dwarfs belong to a class of failed star called Y dwarfs.
最后，恒星大气的最外层部分是日冕，这是一个由于外层对流导致的超热区域。
Finally, the outermost part of a star's atmosphere is the corona, which if super-hot might be linked with convection in the outer layers.
一类不寻常的对象，超亮度X射线源比恒星释放出更多的X射线，但比类星体的少。
An unusual class of objects, ULXs emit more X-rays than stars, but less than quasars.
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