【报告人】王均智 教授（上海天文台）

【报告时间】2021年7月2日（星期五）上午9:30-10:30

【报告地点】物理楼B座9楼天象馆

【报告摘要】I will introduce HCN, HCO+,HNC 1-0 andCS 3-2 survey with IRAM 30 meter toward a sample of about 70 galaxies to study if such dense gas tracers can constantly trace dense molecular gas in galaxies. After combining the data of HCN, HCO+,HNC 1-0in about 60 galaxies in the literature, we obtained a large sample of local galaxies with detection of such dense gas tracers and found that they followed the similar relation with infrared luminosities. The results also include that the line ratio of HCN/HCO+ can not be used as the diagnostictool of obscured AGN, which had been used in the literature.

【报告人简介】unzhi Wang is currently a research Professoratradio division ofShanghai Astronomical observatory (SHAO). He obtained his Bachelor, Master and PhD degrees in Astronomy at PKU. He was then a postdoc at Purple MountainObservatory and an associate professor inNJUuntil 2013. His research interests are star formation and ISM in nearby galaxies and the Milky Way, AGN feedback, and Mega-masers, using radio and (sub-)millimeter facilities in the world, including IRAM 30 meter, Effelsberg, JVLA, NOEMA, SMA, GBT, Arecibo, and the ALMA.