42 citations · 105 across the 9 of their papers we have counts for
9 papers
Linking dynamics and chemistry in barred galaxies through action-space mapping
Tetsuro Asano, Victor P. Debattista, Michiko S. Fujii
We aim to extend the action-based framework, proposed by a previous study, for assigning chemical information to collisionless -body simulations of barred galaxies, enabling mor…
Simulating Star Formation and Star Cluster Assembly in the Aquila Rift Using Archival Observations
Jeremy Karam, Michiko S. Fujii, Rachel Friesen +1
We simulate star formation and star cluster assembly inside a molecular cloud with parameters we derive directly from observations of the Aquila Rift. We model the evolution of sta…
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…
Little Red Dots Are Nurseries of Massive Black Holes
Fabio Pacucci, Lars Hernquist, Michiko Fujii
The James Webb Space Telescope (JWST) has revealed a previously unknown population of compact, red galaxies at , known as "Little Red Dots" (LRDs). With effective radii o…
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…
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…