Galactic Dynamics

The Galactic Dynamics Group explores how structures in the universe, such as dark matter and stellar halos, galaxy disks, and satellite galaxies and streams, are shaped by gravitational interactions and collective dynamics.

The group works at the interface between large observed and simulated datasets and broadly studies galaxy assembly, galactic structural evolution, and the nature of dark matter. Common research themes in the group include (1) modeling and mining modern stellar surveys such as *Gaia*, APOGEE, and SDSS-V to learn about our galaxy, the Milky Way, (2) performing and analyzing high-resolution, tailored galaxy simulations to study dynamical processes, and (3) using cosmological zoom-in simulations to connect studies of the Milky Way and nearby galaxies to the cosmological context of galaxy formation.

Research Highlights

The Open Cluster Chemical Abundances and Mapping Survey. VI. Galactic Chemical Gradient Analysis from APOGEE DR17

N. Meyers, J. Donor, T. Spoo, P. M. Frinchaboy, K. Cunha, A. Price-Whelan, S. R. Majewski, R. L. Beaton, G. Zasowski, J. O'Connell, A. E. Ray, D. Bizyaev, C. Chiappini, D. A. García-Hernández, D. Geisler, H. Jönsson, R. R. Lane, P. Longa-Peña, I. Minchev, D. Minniti, C. Nitschelm, A. Roman-Lopes

The goal of the Open Cluster Chemical Abundances and Mapping (OCCAM) survey is to constrain key Galactic dynamic and chemical…

The Astronomical Journal

Modules for Experiments in Stellar Astrophysics (MESA): Time-Dependent Convection, Energy Conservation, Automatic Differentiation, and Infrastructure

A. Jermyn, E. B. Bauer, J. Schwab, R. Farmer, W. H. Ball, E. P. Bellinger, A. Dotter, M. Joyce, P. Marchant, J. S. G. Mombarg, W. M. Wolf, T. L. S. Wong, G. C. Cinquegrana, E. Farrell, R. Smolec, A. Thoul, M. Cantiello, F. Herwig, O. Toloza, L. Bildsten, R. H. D. Townsend, F. X. Timmes

We update the capabilities of the open-knowledge software instrument Modules for Experiments in Stellar Astrophysics (MESA). The new auto_diff module…

arXiv: 2208.03651

News & Announcements


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