报告题目: Searching IR excess stars and observation of debris disks
报 告 人: 武朝剑 (副研究员, 国家天文台)
A debris disk, generally created by collision of planetesimals, is a circumstellar disk of dust grains or debris around a star. Debris disks supply a reservoir of material from which planets may form.Most of knowledges about debris disks are based on indirect measurements (e.g., SEDs of infrared excess stars), but in the past decade, well-resolved direct images of debris disks have become available and can provide us with important information on the structure of the disks and how they are affected by their ambient environment. In this talk, I will report how to search infrared excess stars and discuss the observations of debris disks with AO and coronagraph.