活動詳細資訊 Event Information
活動詳細資訊 Event Information
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活動訊息最後更新時間 : 2017-09-14 17:21:51
開始日期 Starting Date:2017-09-21  14:00
結束日期 Ending Date:2017-09-21  15:30
會議狀態 State:確定 Definitive
主/協辦單位 Organizer:天文及天文物理研究所 Institute of Astronomy and Astrophysics
活動地點 Venue:R1203 of the Astronomy-Mathematics Building, National Taiwan University
活動備忘 Event Memo:

Abstract

Understanding physical processes responsible for the formation and evolution of galaxies like the Milky Way is a fundamental problem in astrophysics. However, a key challenge is that the properties and orbits of the stars can only be observed at present: to understand what happened in the Milky Way at earlier epochs, one must explore “archaeological” techniques. One idea, "chemical tagging,” aims to probe the history of the Milky Way via the unique imprint in chemical abundance space of long-disrupted star forming associations. I will discuss the opportunities and challenges associated with chemical tagging, including a first constraint on the disrupted cluster mass function in the Milky Way, and how Gaia, as well as extragalactic IFU studies, could be informative in the studies of chemical tagging. I will also describe a new set of tools for efficient measuring multi-elemental abundances from large quantities of low-resolution LAMOST spectra, for constraining the binary fraction in the Milky Way, and for inferring asteroseismic parameters from spectra.