42 citations · 89 across the 8 of their papers we have counts for
8 papers
Tree-ring structure of Galactic bar resonance in N-body simulations
Rimpei Chiba, Michiko Fujii, Junichi Baba +2
We study the structure and evolution of the galactic bar's resonant phase-space in self-consistent N-body simulations of the Milky Way, with and without perturbations from the Sagi…
Galaxy fly-bys sustain bar-halo friction and bar slowdown in disk galaxies
Rumi Kodama, Rimpei Chiba, Tetsuro Asano +2
Bars in disk galaxies slow down as they transfer their angular momentum to their dark matter halo via dynamical friction from near-resonant orbits. This bar-halo dynamical friction…
Ripples spreading across the Galactic disc. Interplay of direct and indirect effects of the Sagittarius dwarf impact
Tetsuro Asano, Michiko S. Fujii, Junichi Baba +2
Gaia data have revealed vertically asymmetric phase-space structures in the Milky Way (MW) disc, such as phase spirals, indicating vertical oscillations. These oscillations exhibit…
Clues to growth and disruption of two neighbouring spiral arms of the Milky Way
Natsuki Funakoshi, Noriyuki Matsunaga, Daisuke Kawata +3
Studying the nature of spiral arms is essential for understanding the formation of the intricate disc structure of the Milky Way. The European Space Agency's Gaia mission has provi…
Impacts of the Local arm on the local circular velocity inferred from the Gaia DR3 young stars in the Milky Way
Aisha S. Almannaei, Daisuke Kawata, Junichi Baba +3
A simple one-dimensional axisymmetric disc model is applied to the kinematics of OB stars near the Sun obtained from Gaia DR3 catalogue. The model determines the 'local centrifugal…
Growing Local arm inferred by the breathing motion
Tetsuro Asano, Daisuke Kawata, Michiko S. Fujii +1
Theoretical models of spiral arms suggest that the spiral arms provoke a vertical bulk motion in disc stars. By analysing the breathing motion, a coherent asymmetric vertical motio…
Trimodal structure of Hercules stream explained by originating from bar resonances
Tetsuro Asano, Michiko S. Fujii, Junichi Baba +3
Gaia Data Release 2 revealed detailed structures of nearby stars in phase space. These include the Hercules stream, whose origin is still debated. Most of the previous numerical st…
Destruction of star clusters due to the radial migration in spiral galaxies
M. S. Fujii, J. Baba
Most stars in galactic disks are believed to be born as a member of star clusters or associations. Star clusters formed in disks are disrupted due to the tidal stripping and the ev…