论文标题
盖亚（Gaia）对与狼疮云相关的年轻星星的调查
A Gaia Survey for Young Stars Associated with the Lupus Clouds
论文作者
论文摘要
我已经使用了Gaia任务的第二个数据释放中的高精度光度法和天文学来对与狼疮云相关的年轻恒星进行调查，狼疮云的距离约为160 pc，并且位于Sco-Cen OB关联中。 Gaia的数据使SCO-CEN中其他组的大多数恒星与与狼疮云重叠的大多数恒星区分开来，这些恒星已污染了先前的调查。候选狼疮成员的新目录应与M7更早的频谱类型完成，该频谱类型在A_K <0.2的字段中，包括云层1--4。我已经使用该目录来表征狼疮恒星种群的各个方面。例如，狼疮中低质量恒星的序列比上SCO的序列更明亮，这意味着上SCO的年龄为〜6 MYR的年龄为10-12 MYR，而上SCO的年龄为10-12 MYR，而亮度的变化随进化模型预测的年龄而变化。我还发现，狼疮中的初始质量函数与附近恒星形成区域的初始质量函数基于其光谱类型的分布的比较。
I have used high-precision photometry and astrometry from the second data release of the Gaia mission to perform a survey for young stars associated with the Lupus clouds, which have distances of ~160 pc and reside within the Sco-Cen OB association. The Gaia data have made it possible to distinguish Lupus members from most of the stars in other groups in Sco-Cen that overlap with the Lupus clouds, which have contaminated previous surveys. The new catalog of candidate Lupus members should be complete for spectral types earlier than M7 at A_K<0.2 within fields encompassing clouds 1--4. I have used that catalog to characterize various aspects of the Lupus stellar population. For instance, the sequence of low-mass stars in Lupus is ~0.4 mag brighter than the sequence for Upper Sco, which implies an age of ~6 Myr based an adopted age of 10-12 Myr for Upper Sco and the change in luminosity with age predicted by evolutionary models. I also find that the initial mass function in Lupus is similar to that in other nearby star-forming regions based on a comparison of their distributions of spectral types.
