报告题目The Spiral Structure of the Milky Way
报 告 人:徐烨 中国科学院紫金山天文台
摘 要: Currently, the high accurate astrometry is carrying out an important scientific object: mapping the Milky Way. Using trigonometric parallax, two large projects, the Bar and Spiral Structure Legacy (BeSSeL) Survey and the Japanese VLBI Exploration of Radio Astrometry (VERA), are mapping up to 500 maser sources associated with star forming regions in recent years, with accuracies typically about ±20 uas, and some as good as ±5 uas. The aim is to construct the spiral structure and three dimension (3D) motions of the Milky Way, and then determine the rotation curve and distribution of dark matter based on the motions.
报告人简介:徐烨, 1962 年生,现任中国科学院紫金山天文台研究员,青海观测站站长。2002 年从上海天文台获博士学位。 2002-2004 年在学从事博士后研究。2005-2008 年为德国马普射电所访问学者。在银河系旋臂结构方面的工作被国际专家认为是该领域的一个里程碑。多次在天文学国际会议上作大会主题报告、特邀报告以及担任IAU科学委员会成员。
报告时间:2018年11月15日(周四)上午11:00
报告地点:台本部南楼210会议室 

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