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The 21cm mock catalogue and velocity distribution functions in L-Galaxies models & The radial distribution and properties of hot gas in CGM in SAMs

  报告题目1:The 21cm mock catalogue and velocity distribution functions in L-Galaxies models 

  报告人:富坚,博士,副研,上海天文台 

  报告摘要:In this talk, we will introduce our recent work on the HI gas component based on the L-Galaxies outputs。 We adopt the light cone algorithms to build the 21cm HI survey。 Based on our results of HI radial profiles of each galaxy disk, we can also give the 21cm line flux profiles of each galaxy and galaxy clusters, which should help for FAST 21cm HI survey。 On the other hand, the velocity distribution function (W50 function) based on our model results gives a very good constraint for the models and dark matter simulations。 We compare the results from ALFALFA to our models, and try to give the explanations for the discrepancy。 

  报告题目2:The radial distribution and properties of hot gas in CGM in SAMs         

  报告人:钟文心,博士研究生,上海天文台 

  报告摘要:In this talk, we try to adopt the new iso-entropy radial distribution profiles (Sharma et al。 2012) of hot gas in the L-Galaxies SAMs to solve the over-cooling and too high X-ray luminosity problem in the previous models。 In our work, we recalculate the cooling, ram-pressure stripping, SN feedback and some other processes related to the hot gaseous around each galaxy。 The results from our recent work can fit the X-ray scaling relation from recent X-ray observations and the results should help to give mock prediction for future X-ray surveys。 

  时间地点:20191230日(周一下午2:00),紫台5-516会议室 

欢迎大家参加!

紫金山天文台学术委员会

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