Chemodynamical models of our Galaxy

Understand

A chemodynamical model of our galaxy is fitted to data from DR17 of the APOGEE survey supplemented with data from the StarHorse catalogue and gaia DR3.

• Dynamically, the model is defined by action-based distribution functions for dark matter and six stellar components plus a gas disc.
• The gravitational potential jointly generated by the model's components is used to examine the galaxy's chemical composition within action space.
• The observational data probably cover all parts of action space that are populated by stars.