Modelling the evolution of PAH abundance in galaxies

Abstract

We investigate the evolution of polycyclic aromatic hydrocarbon (PAH) abundance in a galaxy, which is a crucial step to understand the evolution of bright emission features in the mid-infrared range. We calculate the evolution of dust grain size distribution in a manner consistent with the physical conditions of the interstellar medium by post-processing our previous hydrodynamical simulation of an isolated disc galaxy. We also differentiate between aromatic and non-aromatic grains for carbonaceous dust species and explicitly considered the aromatization process. As a consequence, our model explains the metallicity dependence of PAH abundances in nearby galaxies well. The PAH abundance increase is driven particularly by the interplay between shattering and accretion (dust growth). The fast aromatization guarantees that the small carbonaceous grains trace PAHs very well. Since shattering and accretion are sensitive to the dust abundance, we predict that the PAH-to-dust abundance ratio increases as the metallicity increases. This is consistent with the observation data of nearby galaxies.

arXiv commentAccepted by Monthly Notices of the Royal Astronomical Society (2019/9/5) 7 pages 4 figures

References in corpus (47)

• The cosmological simulation code GADGET-2
• Dust Grain Size Distributions and Extinction in the Milky Way, LMC, and SMC
• Dust Masses, PAH Abundances, and Starlight Intensities in the SINGS Galaxy Sample
• Gas-to-Dust mass ratios in local galaxies over a 2 dex metallicity range
• The Evolution of the Elemental Abundances in the Gas and Dust Phases of the Galaxy
• The evolution of amorphous hydrocarbons in the ISM: dust modelling from a new vantage point
• The most metal-poor galaxies
• Metallicity Effects on Mid-Infrared Colors and the 8 micron PAH Emission in Galaxies
• Evolution of interstellar dust and stardust in the solar neighbourhood
• The global dust modelling framework THEMIS (The Heterogeneous dust Evolution Model for Interstellar Solids)
• The AGORA High-Resolution Galaxy Simulations Comparison Project
• Dust-to-gas Ratio and Metal Abundance in Dwarf Galaxies
• Mid Infrared Properties of Low Metallicity Blue Compact Dwarf Galaxies From Spitzer/IRS
• Stellar Evolutionary Effects on the Abundances of PAH and SN-Condensed Dust in Galaxies
• Dust formation history of galaxies: a critical role of metallicity for the dust mass growth by accreting materials in the interstellar medium
• Dust Spectral Energy Distributions of Nearby Galaxies: an Insight from the Herschel Reference Survey
• Dust Dynamics in Compressible MHD Turbulence
• What determines the grain size distribution in galaxies?
• The AGORA High-Resolution Galaxy Simulations Comparison Project. II: Isolated Disk Test
• Shattering and coagulation of dust grains in interstellar turbulence
• Warm dust and aromatic bands as quantitative probes of star-formation activity
• Galaxy Simulation with Dust Formation and Destruction
• Effects of Massive Star Formation on the ISM of Dwarf Galaxies
• The Spitzer View of Low-Metallicity Star Formation: III. Fine Structure Lines, Aromatic Features, and Molecules
• The Spitzer Spectroscopic Survey of the Small Magellanic Cloud (S4MC): Probing the Physical State of Polycyclic Aromatic Hydrocarbons in a Low-Metallicity Environment
• Simulating galactic dust grain evolution on a moving mesh
• The PAH Emission Deficit In Low-Metallicity Galaxies - A Spitzer View
• Dust growth in the interstellar medium: How do accretion and coagulation interplay?
• Coevolution of dust, gas, and stars in galaxies - I. Spatial distributions and scaling-relations of dust and molecular hydrogen
• The Carriers of the Interstellar Unidentified Infrared Emission Features: Aromatic or Aliphatic?
• Variations on a theme - the evolution of hydrocarbon solids: III. Size-dependent properties - the optEC(s)(a) model
• The Embedded Super Star Cluster of SBS0335-052
• A dynamical constraint on interstellar dust models from radiative torque disruption
• Chemical evolution library for galaxy formation simulation
• Remodeling the evolution of grain size distribution in galaxies
• Two-size approximation: a simple way of treating the evolution of grain size distribution in galaxies
• Formation History of Polycyclic Aromatic Hydrocarbons in Galaxies
• The MOSDEF Survey: Metallicity Dependence of the PAH Emission at High Redshift and Implications for 24 micron-inferred IR Luminosities and Star Formation Rates at z~2
• The cycling of carbon into and out of dust
• Galaxy simulation with the evolution of grain size distribution
• Evolution of dust extinction curves in galaxy simulation
• Osaka Feedback Model: Isolated Disk Galaxy Simulations
• Global Law for Dust-to-gas Ratio of Spiral Galaxies
• Cold condensation of dust in the ISM
• Shiva: the dust destruction model
• Restructuring and destruction of hydrocarbon dust in the interstellar medium
• The evolution of hydrocarbon dust grains in the interstellar medium and its influence on the infrared spectra of dust

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• Spectral energy distributions of dust and PAHs based on the evolution of grain size distribution in galaxies
• Evolution of the grain size distribution in Milky Way-like galaxies in post-processed IllustrisTNG simulations
• Evolution of dust grain size distribution and grain porosity in galaxies
• Evolution of grain size distribution with enhanced abundance of small carbonaceous grains in galactic environments
• Effects of rotational disruption on the evolution of grain size distribution in galaxies
• Observational signatures of the dust size evolution in isolated galaxy simulations
• Dust SEDs in Milky Way-like galaxies in the IllustrisTNG simulations based on the evolution of grain size distribution
• Ashes of FIRE: Modeling Dust Grain Size Evolution in the Local Group with FIRE
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