Chemical evolution with radial mixing

Abstract

Models of the chemical evolution of our Galaxy are extended to include radial migration of stars and flow of gas through the disc. The models track the production of both iron and alpha elements. A model is chosen that provides an excellent fit to the metallicity distribution of stars in the Geneva-Copenhagen survey (GCS) of the solar neighbourhood, and a good fit to the local Hess diagram. The model provides a good fit to the distribution of GCS stars in the age-metallicity plane although this plane was not used in the fitting process. Although this model's star-formation rate is monotonic declining, its disc naturally splits into an alpha-enhanced thick disc and a normal thin disc. In particular the model's distribution of stars in the ([O/Fe],[Fe/H]) plane resembles that of Galactic stars in displaying a ridge line for each disc. The thin-disc's ridge line is entirely due to stellar migration and there is the characteristic variation of stellar angular momentum along it that has been noted by Haywood in survey data. Radial mixing of stellar populations with high sigma_z from inner regions of the disc to the solar neighbourhood provides a natural explanation of why measurements yield a steeper increase of sigma_z with age than predicted by theory. The metallicity gradient in the ISM is predicted to be steeper than in earlier models, but appears to be in good agreement with data for both our Galaxy and external galaxies. The models are inconsistent with a cutoff in the star-formation rate at low gas surface densities. The absolute magnitude of the disc is given as a function of time in several photometric bands, and radial colour profiles are plotted for representative times.

22 pages, 21 figures, 1 table updated to new GCS data release, slightly revised, accepted by MNRAS

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• The Galactic thin and thick disk
• Eta-Earth Revisited II: Deriving a Maximum Number of Earth-like Habitats in the Galactic Disk
• Trading oxygen for iron I: the [O/Fe] -- specific star formation rate relation of galaxies
• Ultra-deep Imaging: Structure of Disks and Haloes
• A Mechanism for the Oxygen and Iron Bimodal Radial Distribution Formation in the Disc of our Galaxy
• The Gaia-ESO Survey: Old super-metal-rich visitors from the inner Galaxy
• Remarkable migration of the solar system from the innermost Galactic disk; a wander, a wobble, and a climate catastrophe on the Earth
• Deep Narrowband Photometry of the M101 Group: Strong-Line Abundances of 720 HII Regions
• Metallicity Gradient of the Thick Disc Progenitor at High Redshift
• The Influence of Radial Stellar Migration on the Chemical Evolution of the Milky Way
• Stellar encounters with giant molecular clouds
• Towards a fully consistent Milky Way disk model -- IV. The impact of Gaia DR2 and APOGEE
• Instability analysis for spiral arms of local galaxies: M51, NGC3627 and NGC628
• The Parent Populations of 6 groups identified from Chemical Tagging in the Solar neighborhood
• Tracing birth properties of stars with abundance clustering
• CCD $UBV(RI{)}_C$ Photometry of Twenty Open Clusters
• A Test for Radial Mixing Using Local Star Samples
• Kinematics of the Galactic disk from LAMOST Dwarf sample
• Clouds accreting from the IGM are not able to feed the star formation of low-redshift disc galaxies
• The vertical metallicity gradients of mono-age stellar populations in the Milky Way with the RAVE and Gaia data
• Stellar migration in the Auriga simulations
• Old open clusters and the Galactic metallicity gradient: Berkeley 20, Berkeley 66, and Tombaugh 2
• The Non-Axisymmetric Influence: Radius and Angle-Dependent Trends in a Barred Galaxy
• GalCEM I -- An Open-Source Detailed Isotopic Chemical Evolution Code
• An empirical formula for the distribution function of a thin exponential disc
• Disk flaring with TNG50: diversity across Milky Way and M31 analogs
• Asymmetric metallicity patterns in the stellar velocity space with RAVE
• Insights into the Formation and Evolution History of the Galactic Disk System
• Kinematics of Stellar Populations with RAVE Data
• Efficient radial migration by giant molecular clouds in the first several hundred Myr after the stellar birth
• Metallicity-Suppressed Collapsars Cannot be the Dominant r-Process Source in the Milky Way
• A Spectroscopic Survey of Field Red Horizontal-Branch Stars
• Galactic r-process abundance feature shaped by radial migration
• The chemical enrichment of the Milky Way disk evaluated using conditional abundances
• Double Red Giant Branch and Red Clump features of Galactic disc stellar populations with Gaia GSPspec
• Far-infrared excess emission as a tracer of disk-halo interaction
• seestar: Selection functions for spectroscopic surveys of the Milky Way
• From Galactic Chemical Evolution to Cosmic Supernova Rates Synchronized with Core-Collapse Supernovae Limited to the Narrow Progenitor Mass Range
• Colour-magnitude diagram in simulations of galaxy formation
• The Chemical Abundance Structure of the Inner Milky Way: A Signature of "Upside-Down" Disk Formation?
• Exploring the impact of a rapidly decelerating bar on transforming bulge orbits into disc-like orbits
• The G-dwarf distribution in star-forming galaxies: a tug-of-war between infall and outflow
• Evidence of a large scale positive rotation-metallicity correlation in the Galactic thick disk
• Constraints on the history of Galactic spiral arms revealed by Gaia GSP-Spec alpha-elements
• A Monte Carlo based simulation of the galactic chemical evolution of the Milky Way galaxy
• Galactic disc heating by density granulation in fuzzy dark matter simulations
• The Gaia-ESO Survey: Probing the lithium abundances in old metal-rich dwarf stars in the Solar vicinity
• The GALAH Survey: Dependence of elemental abundances on age and metallicity for stars in the Galactic disc
• xCOLDGASS and xGASS: Radial metallicity gradients and global properties on the star-forming main sequence
• Recent star formation episodes in the Galaxy: impact on its chemical properties and the evolution of its abundance gradient
• On the radial metallicity gradient and radial migration effect of the Galactic disk
• The parametrization of gas flows in discs in the Auriga simulations
• Element abundance analysis of the metal-rich stellar halo and high-velocitythick disk in the galaxy
• Chemodynamic evolution of Sun-like stars in nearby moving groups
• Rediscovering the Milky Way with orbit superposition approach and APOGEE data I. Method validation
• High-Resolution Chemical Abundances of the Nyx Stream
• Probing the strength of radial migration via churning by using metal-rich red giant stars from APOGEE
• Quantifying the influence of bars on action-based dynamical modelling of disc galaxies
• Rediscovering the Milky Way with orbit superposition approach and APOGEE data II. Chrono-chemo-kinematics of the disc
• An observational testbed for cosmological zoom-in simulations: constraining stellar migration in the solar cylinder using asteroseismology
• The Radial Distribution of Mono-Metallicity Populations in the Galactic Disk as Evidence for Two-Phase Disk Formation
• Resolved SPLASH Chemodynamics in Andromeda's PHAT Stellar Halo and Disk: On the Nature of the Inner Halo Along the Major Axis
• Estimating the age-metallicity distribution of a stellar sample from the probability distributions of the individual stars
• The Lives of Stars: Insights From the TGAS-RAVE-LAMOST Dataset
• A New Method of the Corotation Radius Evaluation in our Galaxy
• Turn-off of Deuterium Astration in the Recent Star Formation of the Galaxy Disk
• Bar-spiral interaction produces radial migration and star formation bursts
• Are Milky-Way-like galaxies like the Milky Way? A view from SDSS-IV/MaNGA
• The role of radial migration on tracing lithium evolution in the Galactic disk
• Towards a fully consistent Milky Way disk model V. The disk model for 4 $-$ 14 kpc
• Stellar population synthesis based modelling of the Milky Way using asteroseismology of dwarfs and subgiants from Kepler
• New stellar age estimates using SPInS based on Gaia DR3 photometry and LAMOST DR8 abundances
• Gas Inflow and Outflow Histories in Disk Galaxies as Revealed from Observations of Distant Star-Forming Galaxies
• Dynamical models and Galaxy surveys
• Measuring the Sun's Motion with Stellar Streams
• Precision Pollution - The effects of enrichment yields and timing on galactic chemical evolution
• Stellar Migration and Chemical Enrichment in the Milky Way Disc: A Hybrid Model
• Bimodal Distribution of Galactic Disk Stars on the [alpha/Fe]-[Fe/H] Plane as a Possible Evidence of Discontinuous Radial Migration History
• Determining the Scale Length and Height of the Milky Way's Thick Disc Using RR~Lyrae
• Angular momentum, accretion and radial flows in chemodynamical models of spiral galaxies
• The building blocks of the Milky Way halo using APOGEE and Gaia -- or -- Is the Galaxy a typical galaxy?
• Kinematic origin of white dwarfs in the solar neighborhood
• The Milky Way in context: The formation of galactic discs and chemical sequences from a cosmological perspective
• Diffusion of radial action in a galactic disc
• Assessing stellar yields in Galaxy chemical evolution: observational stellar abundance patterns
• A prediction on the age of thick discs as a function of the stellar mass of the host galaxy
• Investigating the vertical distribution of the disk as a function of radial action
• The JWST Emission Line Survey (JELS): The sizes and merger fraction of star-forming galaxies during the Epoch of Reionization
• Chemical Evolution in Nuclear Stellar Discs
• Inferring Galactic Parameters from Chemical Abundances: A Multi-Star Approach
• Improved SED-Fitting Assumptions Result in Inside-Out Quenching at $z\sim 0.5$ and Quenching at All Radii Simultaneously at $z\sim 1$
• The Impact of Bars, Spirals and Bulge-Size on Gas-Phase Metallicity Gradients in MaNGA Galaxies
• The K2 Galactic Archaeology Program: Overview, target selection and survey properties
• A path towards constraining the evolution of the interstellar medium and outflows in the Milky Way using APOGEE
• Chemodynamical modelling of the Milky Way
• Vertical kinematics of the thick disc at 4.5 < R < 9.5 kpc
• Inconsistency of Chemical Properties of Stellar Populations in the Thick Disk Subsystem of Our Galaxy
• Modelling the chemical evolution of the Milky Way
• The Chemo-Dynamical History of the Milky Way as Revealed by SDSS/SEGUE
• Quantifying chemical and kinematical properties of Galactic disks
• Radial Mixing due to Spiral-Bar Resonance Overlap: Implications to the Milky Way
• Fe-peak element abundances in disk and halo stars
• Outer Regions of the Milky Way
• Photometric stellar parameters for asteroseismology and Galactic studies
• Tidally-induced radial migration waves in LMC-like galaxies
• Implications of a spatially resolved main sequence for the size evolution of star forming galaxies
• The Stellar Population of the Thin Disk
• Radial Migration in Spiral Galaxies
• Moving Groups in the Solar Neighborhood with Gaia, APOGEE, GALAH, and LAMOST: Dynamical Effects Gather Gas and the Ensuing Star Formation Plays an Important Role in Shaping the Stellar Velocity Distributions
• The odd bunch: chrono-chemo-dynamics of sixteen unusual stars from Kepler
• Evolution and star formation history of NGC300 from a chemical evolution model with radial gas inflows
• Metal-THINGS: gas metallicity gradients in nearby galaxies
• Solar twins in Gaia DR3 GSP-Spec II. Age distribution and its implications for the Sun's migration
• Comparing radial migration in dark matter and MOND regimes
• Determining distances using asteroseismic methods
• Mapping the Milky Way with Gaia Bp/Rp spectra-IV: the broken and asymmetric density profile of the stellar disk traced by a large sample of red clumps
• Towards Understanding the Milky Way's Typicality: Assessing the Chemodynamics of M31's Bulge & Bar, Thick & Thin Discs
• Revisiting the Radial Metallicity Gradient-Age Relation in the Milky Way's Thin and Thick Disks
• Inference from modelling the chemodynamical evolution of the Milky Way disc
• Lessons learnt from the Solar neighbourhood and the Kepler field
• 3D elemental abundances of stars at formation across the histories of Milky Way-mass galaxies in the FIRE simulations
• Neutron-capture elements record the ordered chemical evolution of the disc over time
• Superbubbles as the source of dynamical friction: gas migration, stellar and dark matter contributions
• Galactic Surveys in the Gaia Era
• Galaxy simulations in the Gaia era
• Impacts of Radial Mixing on the Galactic Thick and Thin Disks
• Angular Momentum Accretion onto Disc Galaxies
• The impact of radial migration on disk galaxy star formation histories: II. Role of bar strength, disk thickness, and merger history
• How galaxies form: Mass assembly from chemical abundances in the era of large surveys
• Metallicity Structure in Galactic Longitude-Velocity Diagrams of the Milky Way Disk and FIRE-2 Simulations
• Deep chemical tagging -- Identifying open clusters and moving groups in chemical space with graph attention networks
• Oxygen abundance in local disk and bulge: chemical evolution with a strictly universal IMF
• The Two-infall Model Revisited: Constraints on Milky Way Bulge Assembly from >30,000 Galactic Chemical Evolution Models and Machine Learning
• QED V: Variations in metal loading of galactic winds with element nucleosynthetic origin
• Dynamical interplay of disc thickness and the interstellar gas: implication for the longevity of spiral density waves
• Rapid early gas accretion for the inner Galactic disc
• Understanding the Galaxy
• Chemical Evolution of M31