报告题目：Dawn at Vesta: A Whole New World

报 告 人：李荐扬 博士（马里兰大学）

报告摘要：Asteroids, as both the building blocks of and leftovers from the formation of our planetary system, retain important information about the processes of planet formation. Vesta is one of the largest asteroids, representing the early stage of terrestrial planet formation and the transition from planetesimals to a full-sized planet. Dawn spacecraft currently in orbit around Vesta returned a huge amount of multispectral imaging and spectroscopic data in the visible and near-infrared wavelengths at a scale as high as 20 m/pix, substantially expanding our knowledge about Vesta. Dawn data provide high-precision measurement of the basic properties of Vesta including its shape and gravity, and constrain its internal structure. Vesta displays extremely large variations on its albedo, color, and spectra across the surface, a result of its complicated impact history. Vesta, as seen by Dawn, is a unique world full of surprises in many aspects.

报告时间：2012年5月11日 （星期五）上午10：30 

报告地点：南京大学鼓楼校区  苏富特 大厦 三楼 会议室

非常欢迎大家参加！

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