演講資訊

摘要：

Using archive data from MALT90, ATLASGAL, GLIMPS and so on, we studied chemical properties of Red MSX Sources in the southern sky: What is the chemical properties of massive star formation? Are they different from their low mass counterparts? In different evolutionary stages, which molecules can be used as "chemical clocks" ? When HII regions have been formed inside, which molecules may be destroyed by UV photons or ionized gas? Whether accretions can b e halted by the strong outward radiation and thermal pressure, can it continue in an ionized form? These are the issues I will address in my talk.