Stochastic 2-D galaxy disk evolution models. Resolved stellar populations in the galaxy M33

TL;DR

This paper enhances stochastic 2-D galaxy disk models by incorporating gas outflows and synthetic stellar population diagrams, demonstrating their effectiveness using HST data to analyze star formation histories in M33.

Contribution

The paper introduces enriched gas outflows and synthetic color-magnitude diagrams into stochastic 2-D galaxy disk models for improved analysis of stellar populations.

Findings

Models successfully reproduce observed stellar populations in M33.

Enhanced models can derive detailed 2-D star formation histories.

Demonstrates potential for studying resolved galaxy disks.

Abstract

We improved the stochastic 2-D galaxy disk models (Mineikis & Vansevi\v{c}ius 2014a) by introducing enriched gas outflows from galaxies and synthetic color-magnitude diagrams of stellar populations. To test the models, we use the HST/ACS stellar photometry data in four fields located along the major axis of the galaxy M33 (Williams et al. 2009) and demonstrate the potential of the models to derive 2-D star formation histories in the resolved disk galaxies.