ACIS-I observations of NGC 2264

This paper's goal is to improve the member census of the NGC 2264 star-forming region and study the origin of X-ray activity in young PMS stars. We analyze a deep, 100ks long,...本文旨在完善NGC 2264恒星形成区的成员星普查工作，并研究年轻前主序星（Pre-Main Sequence, PMS）的X射线活动起源。我们针对一次时长100千秒的深度观测展开分析，……