10 papers
Swing amplification in star-gas disks
Abhishek Hegade K. R., Chris Hamilton
Recent JWST and ALMA observations have revealed stellar bars and spirals in gas-rich galactic disks at redshifts as high as . The simplest theoretical paradigm we have…
Short-Range Forces Can Catalyze Extreme Orbital Evolution in Hierarchical Triples
Ygal Y. Klein, Chris Hamilton
Hierarchical triples are promising environments for producing exotica such as black hole mergers and hot Jupiters, because of the von Zeipel-Lidov-Kozai (ZLK) effect, whereby a dis…
Interstellar Medium-Driven Orbital Transport -- I. Radial Heating and Migration
Shaunak Modak, Chris Hamilton, Eve C. Ostriker +1
Interstellar medium (ISM) structures gravitationally perturb stellar orbits in galactic disks, driving orbital heating and migration. However, studies of these transport processes…
Phase spirals across galactic disks I: Exploring dynamical influences on winding
Kiyan Tavangar, Kathryn V. Johnston, Jason A. S. Hunt +4
The vertical phase-space spirals in the Milky Way are clear evidence of disequilibrium. However, they are challenging to study because phase mixing signals evolve under the influen…
On the radial velocity wave in the Galactic disk
Chris Hamilton, Andrew Mummery, Joss Bland-Hawthorn
Stars in the Galactic disk have mean radial velocities that oscillate as a function of angular momentum . This `- wave' signal also e…
Characterizing Density and Gravitational Potential Fluctuations of the Interstellar Medium
Shaunak Modak, Eve C. Ostriker, Chris Hamilton +1
Substructure in the interstellar medium (ISM) is crucial for establishing the correlation between star formation and feedback and has the capacity to significantly perturb stellar…