Uncertainties in Galactic Chemical Evolution Models

Abstract

We use a simple one-zone galactic chemical evolution model to quantify the uncertainties generated by the input parameters in numerical predictions, for a galaxy with properties similar to those of the Milky Way. We compiled several studies from the literature to gather the current constraints for our simulations regarding the typical value and uncertainty of seven basic parameters, which are: the lower and upper mass limits of the stellar initial mass function (IMF), the slope of the high-mass end of the stellar IMF, the slope of the delay-time distribution function of Type Ia supernovae (SNe Ia), the number of SNeIa per Msun formed, the total stellar mass formed, and the final mass of gas. We derived a probability distribution function to express the range of likely values for every parameter, which were then included in a Monte Carlo code to run several hundred simulations with randomly selected input parameters. This approach enables us to analyze the predicted chemical evolution of 16 elements in a statistical way by identifying the most probable solutions along with their 68% and 95% confidence levels. Our results show that the overall uncertainties are shaped by several input parameters that individually contribute at different metallicities, and thus at different galactic ages. The level of uncertainty then depends on the metallicity and is different from one element to another. Among the seven input parameters considered in this work, the slope of the IMF and the number of SNe Ia are currently the two main sources of uncertainty.

20 pages, 12 figures, 7 tables, accepted in ApJ (v.3 - 11/05/2016)

References in corpus (40)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Physical Models of Galaxy Formation in a Cosmological Framework
• Galactic chemical evolution: Carbon through Zinc
• Chemical enrichment in cosmological, smoothed particle hydrodynamics simulations
• The Dawes Review 2: Nucleosynthesis and stellar yields of low and intermediate-mass single stars
• Observational constraints on the progenitors of core-collapse supernovae : the case for missing high mass stars
• A systematic variation of the stellar initial mass function in early-type galaxies
• The R136 star cluster hosts several stars whose individual masses greatly exceed the accepted 150 Msun stellar mass limit
• Mass, Metal, and Energy Feedback in Cosmological Simulations
• On the mass-to-light ratio of the local Galactic disc and the optical luminosity of the Galaxy
• The Remarkable Deaths of 9 - 11 Solar Mass Stars
• The Supernova Channel of Super-AGB Stars
• Fragmentation of star-forming clouds enriched with the first dust
• Three-Dimensional Simulations of Core-Collapse Supernovae: From Shock Revival to Shock Breakout
• Very low metallicity massive star models: Pre-SN evolution and primary nitrogen production
• Fallback and Black Hole Production in Massive Stars
• Galactic evolution of rapid neutron capture process abundances: the inhomogeneous approach
• Galactic r-process enrichment by neutron star mergers in cosmological simulations of a Milky Way-mass galaxy
• The History of R-Process Enrichment in the Milky Way
• The First Population II Stars Formed in Externally Enriched Mini-halos
• The 12C + 12C reaction and the impact on nucleosynthesis in massive stars
• Helium enrichment and Carbon-star Production in Metal-rich Populations
• The Impact of Modeling Assumptions in Galactic Chemical Evolution Models
• A new formulation of the Type Ia SN rate and its consequences on galactic chemical evolution
• The Progenitors of Type Ia Supernovae
• Elemental Abundances in Milky Way-like Galaxies from a Hierarchical Galaxy Formation Model
• Carbon-Enhanced Metal-Poor Stars: Relics from the Dark Ages
• On the Sensitivity of Massive Star Nucleosynthesis and Evolution to Solar Abundances and to Uncertainties in Helium Burning Reaction Rates
• Type Ia supernovae from exploding oxygen-neon white dwarfs
• On the Numerical Treatment and Dependence of Thermohaline Mixing in Red Giants
• On Carbon Burning in Super Asymptotic Giant Branch Stars
• Dependence of S-Process Nucleosynthesis in Massive Stars on Triple-Alpha and 12C(a,g)16O Reaction Rate Uncertainties
• Explosion and nucleosynthesis of low redshift pair instability supernovae
• Testing the universality of the IMF with Bayesian statistics: young clusters
• Code dependencies of pre-supernova evolution and nucleosynthesis in massive stars: Evolution to the end of core helium burning
• Subclasses of Type Ia Supernovae as the origin of [α/Fe] ratios in dwarf spheroidal galaxies
• Radiogenic p-isotopes from SNIa, nuclear physics uncertainties and Galactic chemical evolution compared with values in primitive meteorites
• The origin of low [alpha/Fe] ratios in extremely metal-poor stars
• Empirical properties of Very Massive Stars
• The Discovery of a Very Massive Star in W49

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• The Two-infall Model Revisited: Constraints on Milky Way Bulge Assembly from >30,000 Galactic Chemical Evolution Models and Machine Learning
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