年轻恒星天体长期观测计划的结果和前景
Results and Perspectives of Young Stellar Object long look programs
摘要：
钱德拉和XMM-牛顿都进行了长期的研究YSO物理程序。我将讨论最近的结果上有争议的问题0类YSO的X射线发射，磁漏斗的观测证据的YSO与其拱星盘和Fe 6.4 keV的荧光线发射及其起源。虽然XMM-牛顿DROXO计划的最新结果挑战了Fe 6.4线起源于光电离荧光盘材料的“标准”解释，但X射线激发Ne 12.81微米线的发现是X射线和盘材料之间相互作用的明确证据。未来需要使用XMM-Newton进行长视观测，以澄清X射线对YSO盘的影响。
英文摘要：
Both Chandra and XMM-Newton have performed long look programs for studying the YSO physics. I will discuss recent results on the controversial issue of Class 0 YSO X-ray emission, the observational evidence of magnetic funnels interconnecting the YSO with its circumstellar disk and the Fe 6.4 keV fluorescent line emission and its origin. While recent results of the XMM-Newton DROXO program challenge the ''standard'' interpretation of the Fe 6.4 line origin as due to photoionized fluorescing disk material, the discovery of X-ray excited Ne 12.81 micron line is a clear evidence of the interaction between X-rays and disk material. Future long look observations with XMM-Newton are required to clarify the X-ray effects on YSO disk.
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