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[colloquium] Gregory Herczeg: Touring the stages of star and planet formation

發表日期:2021-03-17來源:放大 縮小
 
国台學術報告2021 04 /NAOC Colloquium No.04 2021
暨國家天文台組建20周年學術報告 Colloquium for the 20th anniversary of NAOC
   
報告題目/Title Touring the stages of star and planet formation
報告人/Speaker Prof. Gregory Herczeg (KIAA/PKU)
報告時間/Time Wednesday 2:30 PM, Mar. 17th, 2021
報告地點/Location A601, NAOC & Live Streaming
主持人/Host Prof. Suijian Xue
報告語言/Language: English (英文報告)
報告海報/Poster Click to download the poster
演示幻燈片/Slides Click to download the slides
報告視頻/Video Click to watch the video (later)
直播链接/Live Webcast: [科技館直播地址]  [光明網直播地址]
 
報告摘要/Abstract  
While the stages in the formation of stellar systems are now well charted, uncertainties in the initial conditions and evolution lead to stellar systems with a diverse array of architectures.  In this talk I will discuss the major stages in the evolution of young stellar objects, starting from the young protostars and ending in stars that have dispersed all circumstellar material.  At each step I will describe insights into some of the relevant processes that are being obtained from ongoing observational programs. For protostars, we are pursuing the first long-term monitoring program in the sub-mm to establish the role of accretion variability during the main phase of stellar growth in the EAO/JCMT Transient Survey.  The next stage, protoplanetary disks, is now being revolutionized by exquisite ALMA images of substructures, which point to the presence of hidden planets. Gaia observations of young stars that have shed their disk promise to reveal the recent star formation in our local neighborhood.  Finally, at the end I will discuss ongoing and future efforts that will shed light on star and planet formation, including with the HST/ULLYSES program, JWST, and eventually the TMT.
   
報告人介绍/Bio:  
Greg Herczeg studies star and planet formation, primarily using observations from UV through sub-mm wavelengths and with specific expertise in disk accretion and accretion-driven outflows.  After getting his PhD from Colorado in 2005, Greg worked as a postdoc at Caltech with Lynne Hillenbrand and at MPE with Ewine van Dishoeck before moving to the Kavli Institute for Astronomy and Astrophysics at Peking University at the end of 2011, where he is now an Associate Professor and Associate Director for Science.  In 2020, Greg began serving as the chair of the Science Advisory Committee for TMT and started a position as Science Editor for the AAS Journals.
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