Models of Late-Type Disk Galaxies: 1-D Versus 2-D

TL;DR

This paper compares 1-D smooth and 2-D stochastic galaxy evolution models, revealing that 2-D models exhibit significant variability in star formation and photometric properties across disks and over time.

Contribution

It introduces 2-D stochastic models for galaxy evolution, highlighting their ability to capture variability overlooked by traditional 1-D smooth models.

Findings

2-D models show high variability in star formation rates

Surface photometric parameters fluctuate significantly in 2-D models

2-D stochastic models better represent observed galaxy diversity

Abstract

We investigate the effects of stochasticity on the observed galaxy parameters by comparing our stochastic star formation two-dimensional (2-D) galaxy evolution models with the commonly used one-dimensional (1-D) models with smooth star formation. The 2-D stochastic models predict high variability of the star formation rate and the surface photometric parameters across the galactic disks and in time.