学术通告
2019年度
2018年度
2017年度
2016年度
2015年度
2014年度
2013年度
2012年度
2011年度
2010年度
规章制度
通知公告
·关于停止接待散客参观的公告 (2020-12-29)
·2020年“国家奖学金”获奖名单公示 (2020-10-26)
·中国科学院云南天文台食堂原材料供应商遴选公告 (2020-09-30)
·中国科学院云南天文台关于2020年度岗位聘用事宜的通知 (2020-09-03)
·昆明分院拟提名2020年度云南省科学技术奖励项目相关信息公示 (2020-07-06)
·中国科学院云南天文台2019-2020学年优秀学生初选名单公示 (2020-05-25)
·关于做好2020年度中国科学院院长奖学金初选工作的通知 (2020-05-02)
·关于做好2020年度朱李月华奖学金评选工作的通知 (2020-05-02)
·关于申报2020年度中国科学院大学—必和必拓奖学金的通知 (2020-01-14)
·计算太阳物理领域博士后招聘启事 (2020-01-06)
您现在的位置:首页 > 新闻资讯 > 学术通告 > 2017年度
【云台学术报告】2017年11月6日(周一)下午 3:00-4:30 行政楼三楼会议室
2017-10-17  |  作者:  |  【  】 【打印】 【关闭

【学术报告】
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
报告题目:Universality and peculiarity in galaxy formation

报告人:Prof. David Elbaz 

报告人单位:CEA, Saclay, France

报告时间:2017年11月6日(周一)下午 3:00-4:30

报告地点:行政楼三楼会议室

报告语言:英文

报告摘要: 

  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

  An ever-increasing amount of information converge towards a picture or galaxy formation where galaxies evolve through a rather secular star formation history as opposed to rapidly and strongly varying. But what causes this universality among galaxies with very different morphologies and social lives? Often considered negligible, on the basis of its classical perception, the environment appears to play a key role in regulating the growth of galaxies and its fluctuations with cosmic time. Numerical simulations now converge, when pushed to scales smaller than 5 pc, and provide a physical explanation why gas-rich galaxies major mergers rarely exhibit strong starburst signatures. When looked at carefully with the resolving power of ALMA, galaxies start revealing some subtle effects of mergers consistent with those hydrodynamic simulations. Starbursts hidden in the so-called star formation main sequence of galaxies show up that may play a key role in understanding the morphological transformation of disks into spheroids. However, a major tension hides behind this idyllic picture: cosmological models fail to reproduce the observed evolution of individual galaxies and extensively use sub-grid recipes for feedback with intensities difficult to reconcile with the observed universality. A major question emerges from these considerations: is there something fundamentally wrong with our theoretical assumptions on how galaxies formed, and consequently on e.g. the behaviour/nature of dark matter, or is this only reflecting the complexity of the behaviour of baryons?

 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

本通知也可以在云台学术报告网页看到:

http://www.ynao.cas.cn/xwzx/xstg/

申请安排学术报告的同事请参见台学术报告管理办法:

http://www.ynao.cas.cn/xwzx/xstg/gzzd/

2.4米望远镜组

云南天文台学术委员会

邀请人:赵应和 联系电话:15850512380

10月31日

 
©2010  中科院云南天文台    版权所有     滇ICP备05000010号-1    滇公网安备53011102001009号
地址:中国 云南省 昆明市 官渡区 羊方旺396号    邮编:650216    联系我们