The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Star Formation of Merging Disk Galaxies with AGN Feedback Effects

  • Park, Jongwon (Department of Astronomy, Yonsei University) ;
  • Smith, Rory (Department of Astronomy, Yonsei University) ;
  • Yi, Sukyoung K. (Department of Astronomy, Yonsei University)
  • Published : 2017.04.10
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Abstract

Using numerical hydrodynamics code RAMSES, we perform idealized galaxy merger simulations and study the star formation of merging disk galaxies. In our simulations, we consider the active galactic nucleus (AGN) feedback effect. In order to investigate the star formation influenced by AGN, we run ~60 simulations with various initial conditions. We confirm that star formation is more efficiently suppressed in merging galaxies than in isolated galaxies. In the mergers, AGN effect is more significant when the masses of two galaxies are similar. Furthermore, we find that bulge fraction does not affect the star formation when the AGN effect is considered. We discuss the implications on semi-analytic galaxy formation models and the limitation of the current AGN prescriptions.

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