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The Spiral Structure of the Milky Way
报告题目:The Spiral Structure of the Milky Way
报 告  人:Dr. Ye XU (徐烨),紫金山天文台研究员,德令哈观测基地首席科学家
报告时间:2019-10-24 15:00:00
报告地点:天文楼212报告厅

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.


个人简介:

2002 年在上海天文台获博士学位。

2002-2004 年在南京大学从事博士后研究。

2005-2008 年在德国马克斯普朗克射电天文研究所做高级访问学者。

徐烨研究员在银河系旋臂结构方面进行了大量工作,其中2006年他在《科学》发表的“英仙臂的距离”的工作被认为是该领域的一个里程碑。

徐烨研究员现任紫金山天文台研究员,德令哈观测基地首席科学家。