Upper Scorpius spectroscopy and photometry

We have refined the census of stars and brown dwarfs in the Upper Sco association (~10Myr, ~145pc) by (1) updating the selection of candidate members from our previous survey to...我们优化了天蝎上部星协（Upper Sco Association）内恒星与褐矮星的普查工作。该星协年龄约为10 Myr（1000万年）、距离约145 pc（秒差距），本次优化手段包括：（1）更新了基于我们此前巡天项目筛选候选成员的标准……