The Evolution and Star Formation History of M33

Abstract

We construct a parameterized model to explore the main properties of the star formation history of M33. We assume that the disk originates and grows by the primordial gas infall and adopt the simple form of gas accretion rate with one free parameter, the infall time-scale. We also include the contribution of gas outflow process. A major update of the model is that we adopt a molecular hydrogen correlated star formation law and calculate the evolution of the atomic and molecular gas separately. Comparisons between the model predictions and the observational data show that the model predictions are very sensitive to the adopted infall time-scale, while the gas outflow process mainly influences the metallicity profile. The model adopting a moderate outflow rate and an inside-out formation scenario can be in good agreement with most of observed constraints of M33 disk. We also compare the model predictions based on the molecular hydrogen correlated star formation law and that based on the Kennicutt star formation law. Our results imply that the molecular hydrogen correlated star formation law should be preferred to describe the evolution of the M33 disk, especially the radial distributions of both the cold gas and the stellar population.

11 pages,6 figures,2 tables, accepted by MNRAS

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Cited by in corpus (13)

• Evolution of the Milky Way with radial motions of stars and gas I. The solar neighborhood and the thin and thick disk
• On the duration of the embedded phase of star formation
• The UK Infrared Telescope M33 monitoring project. III. Feedback from dusty stellar winds in the central square kiloparsec
• The UK Infrared Telescope M33 monitoring project. V. The star formation history across the galactic disc
• The star-formation history of low-mass disk galaxies: a case study of NGC\,300
• MaNGA 8313-1901: gas accretion observed in a blue compact dwarf galaxy?
• Outside-in stellar formation in the spiral galaxy M33?
• Breaking the degeneracy between gas inflow and outflows with stellar metallicity: Insights on M101
• Spectroscopic Study of M33 with LAMOST survey. I. Chemical gradients from nebulae
• Chemical and photometric evolution models for disk, irregular and low mass galaxies
• The role of environment on the star formation history of disc galaxies
• The Evolution of Interacting Spiral Galaxy NGC 5194
• On the spatial distribution of luminous blue variables in the M33 galaxy