The Graduate University for Advanced Studies

  1. Home
  2. Department of Science Faculty Members

Assistant Professor    Baba, Junichi

Research Field

  • Galactic dynamics, Astrometry, Computational Astrophysics


  • Ph. D.(Tohoku University)

Summary of Research

  • Dynamics of spiral arms and bars in the Milky Way using N-body/hydrodynamic simulations and astrometric data (Gaia/JASMINE)
  • The origin of the solar system in the Milky Way and galactic chemical evolution
  • Formation and evolution of molecular clouds and star clusters in galaxies
  • Gas dynamics of spiral/barred galaxies

Research Achievements or Papers

  • J. Baba, & D. Kawata, 2020, MNRAS, 492, 4500: "Age Dating the Galactic Bar with the Nuclear Stellar Disc"
  • J. Baba, D. Kawata, N. Matsunaga, R. J. J. Grand, & J. A. S. Hunt, 2018, ApJ Letter, 853, L23: "Gaia DR1 Evidence of Disrupting the Perseus Arm"
  • J. Baba, K. Morokuma-Matsui, & T. R. Saitoh, 2017, MNRAS, 464, 246: "Eventful Evolution of Giant Molecular Clouds in Dynamically Evolving Spiral Arms"
  • J. Baba, K. Morokuma-Matsui, Y. Miyamoto, F. Egusa, & N. Kuno, 2016, MNRAS, 460, 2472: "Gas velocity patterns in simulated galaxies: Observational diagnostics of spiral structure theories"
  • J. Baba, 2015, MNRAS, 454, 2954: "Short-term dynamical evolution of grand-design spirals in barred galaxies"
  • J. Baba, K. Morokuma-Matsui, & F. Egusa, 2015, PASJ, 67, L45: "Radial distributions of arm-gas offsets as an observational test of spiral theories"
  • C. L. Dobbs & J. Baba, 2014, PASA, 31, 35: "Dawes Review 4: Spiral Structures in Disc Galaxies"
  • J. Baba, T. R. Saitoh, & K. Wada, 2013, ApJ, 763, 46: "Dynamics of Non-Steady Spiral Arms in Disk Galaxies"
  • J. Baba, T. R. Saitoh, & K. Wada, 2010, PASJ, 62, 1413: "On the Interpretation of the l-v Features in the Milky Way Galaxy"
  • J. Baba, Y. Asaki, J. Makino, M. Miyoshi, T. R. Saitoh, & K. Wada, 2009, ApJ, 706, 471: "The Origin of Large Peculiar Motions of Star-Forming Regions and Spiral Structures of Our Galaxy"

Academic Society

  • Astronomical Society of Japan,  International Astronomical Union (IAU)

Web Page


  • jun.baba[at]
    (In the mailing address, replace [at] with @)