GEM
 

Welcome to Prof. Sukyoung K. Yi's group (GEM) homepage

이석영 교수의 은하진화 연구 그룹 홈페이지에 오신것을 환영합니다.





The ultimate goal of our group is to understand the formation and evolution of galaxies. We work on various versions of galaxy formation theories, focusing on dynamical clustering of galaxies and galactic chemical evolution in combination with stellar population synthesis. We extensively, but not exclusively, use SDSS and GALEX data to test our theoretical models.




  • Dr. Scott Croom, Dr. Julia Bryant and Dr. Warrick Couch will visit GEM (10-13 Apr 2017)
  • Dr. Barbara Cantinella and Dr. Luca Cortese at ICRAR are visiting GEM (1-15 Apr 2017)
  • SAMI workshop will be held at KASI. (12 Apr 2017)
  • Environment workshop wiil be held. (3 Apr 2017)
  • Dr. Kang Xi and Dr. Emanuel Contini from the Purple Mountain Observatory (PMO) will visit GEM (9-13 May 2016) (See the poster)
  • Prof. Christophe Pichon at IAP and his group members visited GEM (12 Feb 2016)
  • Dr. Sanjaya Paudel visited GEM (22 Jan 2016)
  • GEM group members participated in the 227th AAS meeting in Florida giving presentations (05-09 Jan 2016)
  • The former GEMer Kyuseok Oh has been awarded "A best thesis at Yonsei". Congratulations to Dr. Oh! (Nov 2015)
  • Honggeun Khim has been awarded "The Jung Sung Ki Alumnus award" for excellent research performance. Congratulations to Khim! (Nov 2015)




    • Title: Star Formation of Merging Disk Galaxies with AGN Feedback Effects


    Explanation:
    Using idealized merger simulations, we investigated the effect of AGN feedback on the star formation. Unlike the previous studies, we varied many parameters such as mass ratio between two galaxies, B/T ratio, gas fraction, etc. Our main conclusions are as follows:
    1) AGN suppresses star formation more efficiently in a major merger than in a minor merger.
    2) AGN feedback wipes out the difference in star formation made by different B/T ratio.
    3) It is difficult to reproduce the trends seen in observational studies with the current AGN prescriptions.
    Full text [arXiv]


    Last modified: 2017-07-25
       Since 25 March 2010
    Dept. of Astronomy, Yonsei University
    134 shinchon-dong, Sudaemun-gu, Seoul 120-179 Korea
    Copyright 2006 Galaxy Evolution Meeting. Maintained by J. Park