RUI: Observational Studies of Supernova Remnants

超新星在天文学中很重要，这既是因为它们是恒星演化的关键阶段，也是因为它们产生能量，并为星际气体提供丰富的化学元素，从而形成新一代的恒星。要了解其中涉及的物理机制，需要了解超新星在从最初爆炸的亮度减弱到距离其起源很远的残余物的微弱结点和细丝后如何演化。首席调查员(PI)将继续进行光谱调查，以发现主要在麦哲伦星云和外部星系M33中的超新星遗迹，以寻找新的遗迹。他还将用电荷耦合器件(CCD)探测器和适合于离子发射线的滤光片拍摄已知残留物的照片，以便分析残留物的化学丰度、运动和热特征。过去，PI在让本科生参与这些运动图像的研究方面处于领先地位。这项提议预计将提供双重目的，既可以阐明超新星在爆炸后几个世纪的演化，也可以指导学生从多次曝光图像中提取信息的技术。

Supernovae are important in astronomy both because they are a key phase in the evolution of stars and because they produce energy and enriched chemical elements to the interstellar gas from which new generations of stars form. To understand the physical mechanism involved requires a knowledge of how supernova evolve after they fade from the initial brilliance of their explosions to faint knots and filaments of their remnants at large distances from their origins. The Principal Investigator (PI) will continue a spectroscopic survey to discovery of supernova remnants primarily in the Magellanic Clouds and the external galaxy M33 to find new remnants. He will also take "photographs" of known remnants with a charged coupled device (CCD) detector combined with filters appropriate to emission lines of ions that permit an analysis of the remnant's chemical abundances, motions, and thermal characteristics. The PI has taken a lead in the past in involving undergraduates in the studies of these kinematic images. This proposal is expected to provide a dual purpose, both in elucidating the evolution of supernovae centuries after their explosions and in the instruction of students in the techniques of extracting information from multiple exposure images.