题目：The TOP-SCOPE survey of Planck Galactic Cold Clumps
报告人：Tie Liu, EAO/JCMT, KASI
时间地点：周四, 2019.1.10下午2:30-4:30, 物理楼552
Stars form in dense regions within molecular clouds, called pre-stellar cores (PSCs), which provide information on the initial conditions in the process of star formation. The low dust temperature (<14 K) of Planck Galactic Cold Clumps (PGCCs) makes them likely to be pre-stellar objects or at the very initial stage of protostellar collapse. "TOP-SCOPE" are joint survey programs targeting at Planck Cold Clumps (PI: Tie Liu). "TOP", standing for "TRAO Observations of Planck cold clumps", aims at an unbiased CO/13CO survey of 2000 Planck Galactic Cold Clumps with the Taeduk Radio Astronomy Observatory 14-meter telescope. "SCOPE", standing for "SCUBA-2 Continuum Observations of Pre-protostellar Evolution", is a legacy survey using SCUBA-2 onboard of the James Clerk Maxwell Telescope (JCMT) at East Asia Observatory (EAO) to survey 1000 Planck galactic cold clumps at 850 micron. We are also actively developing follow-up observations with other ground-based telescopes (NRO 45-m, Effelsberg 100-m, IRAM 30-m. SMT, KVN, SOFIA, TianMa 65-m, FAST 500-m, SMA, ALMA). We aim to statistically study the initial conditions of star formation and cloud evolution in various kinds of environments. I will present the progress and the future plans of this internationally collaborating project.
Dr. Tie Liu obtained his BSc degree from Department of Physics, Xiamen University in 2008. He then spent five-year’ time in Peking University and earned the PhD degree in 2013. After that, Dr. Tie Liu worked at Peking University and Universidad de Chile until April 2014. From June 2014, he did research in the Korea Astronomy and Space Science Institute (KASI) as a KASI fellow until June 2017. From July 2017, he started to work at East Asian Core Observatories Association (EACOA) as an EACOA fellow. His research is mainly focused on star formation in the Milky Way. He is now leading two internationally collaborating survey projects for observing thousands of Planck Galactic Cold clumps at the Taeduk Radio Astronomy Observatory (TRAO) and the James Clerk Maxwell Telescope (JCMT). The survey team (including ~150 people) is also actively developing follow-up observations with many other ground-based telescopes including the ALMA.