Towards a fully consistent Milky Way disk model V. The disk model for 4 $-$ 14 kpc

Abstract

We present a generalised version of the semi-analytic Just-Jahreiss (JJ) model of the Galactic disk that incorporates our findings for the solar neighbourhood and is applicable to a wide range of galactocentric distances, 4 kpc $\lesssim R\lesssim$ 14 kpc. The JJ model is a flexible tool for stellar population synthesis with a fine age resolution of 25 Myr. It includes six Milky-Way (MW) components: the four flattened (exponential thin and thick disk, atomic and molecular gas) and two spheroidal (spherical stellar halo and a cored isothermal dark matter sphere). The overall thin-disk thickness is assumed to be constant at all radii, though flaring can also be tested. The adopted radial variation in the thin-disk star-formation rate (SFR) reflects the inside-out disk growth scenario. We allow a smooth power-law SFR continuum to be modified by an arbitrary number of Gaussian peaks. We present a public code of the JJ model complemented by the three sets of isochrones (PARSEC, MIST, and BaSTI). Using metallicity distributions of the red clump giants from APOGEE, we constrain the radial variation of the JJ-model age-metallicity relation (AMR) and propose a new analytic form for the AMR function. The generalised JJ model is a publicly available tool for studying different stellar populations across the MW disk. With its fine age resolution and flexibility, it can be particularly useful for reconstructing the thin-disk SFR, as a variety of different SFR shapes can be constructed within its framework.

arXiv comment21 pages, 12 figures, 3 tables. Accepted for publication by A&A

References in corpus (79)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Astropy: A Community Python Package for Astronomy
• The NumPy array: a structure for efficient numerical computation
• Gaia Data Release 2. Summary of the contents and survey properties
• The Gaia mission
• The Seventh Data Release of the Sloan Digital Sky Survey
• Modules for Experiments in Stellar Astrophysics (MESA)
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• Modules for Experiments in Stellar Astrophysics (MESA): Giant Planets, Oscillations, Rotation, and Massive Stars
• Modules for Experiments in Stellar Astrophysics (MESA): Binaries, Pulsations, and Explosions
• MESA Isochrones and Stellar Tracks (MIST). I: Solar-Scaled Models
• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• MESA Isochrones and Stellar Tracks (MIST) 0: Methods for the construction of stellar isochrones
• Local Kinematics and the Local Standard of Rest
• The Apache Point Observatory Galactic Evolution Experiment (APOGEE)
• The Galaxy in Context: Structural, Kinematic and Integrated Properties
• The Sixteenth Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
• A new generation of PARSEC-COLIBRI stellar isochrones including the TP-AGB phase
• A Universal Stellar Initial Mass Function? A Critical Look at Variations
• The Radial Velocity Experiment (RAVE): first data release
• A geometric distance measurement to the Galactic Center black hole with 0.3% uncertainty
• Gaia Early Data Release 3: Photometric content and validation
• ASPCAP: The Apogee Stellar Parameter and Chemical Abundances Pipeline
• Chemical evolution with radial mixing
• Star counts in the Galaxy. Simulating from very deep to very shallow photometric surveys with the TRILEGAL code
• Chemical Cartography with APOGEE: Metallicity Distribution Functions and the Chemical Structure of the Milky Way Disk
• Gaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes
• The age structure of stellar populations in the solar vicinity. Clues of a two-phase formation history of the Milky Way disk
• The Radial Velocity Experiment (RAVE): Fifth Data Release
• The Local Dark Matter Density
• Vertical waves in the solar neighbourhood in Gaia DR2
• Target Selection for the Apache Point Observatory Galactic Evolution Experiment (APOGEE)
• An Extremely Top-Heavy IMF in the Galactic Center Stellar Disks
• The Updated BaSTI Stellar Evolution Models and Isochrones: I. Solar Scaled Calculations
• The Apache Point Observatory Galactic Evolution Experiment (APOGEE) Spectrographs
• Target Selection for the SDSS-IV APOGEE-2 Survey
• Stars, Gas, and Dark Matter in the Solar Neighborhood
• The APOGEE red-clump catalog: Precise distances, velocities, and high-resolution elemental abundances over a large area of the Milky Way's disk
• Global properties of the HI distribution in the outer Milky Way
• A time-resolved picture of our Milky Way's early formation history
• The stellar population structure of the Galactic disk
• Formation and Evolution of the Disk System of the Milky Way: [alpha/Fe] Ratios and Kinematics of the SEGUE G-Dwarf Sample
• Lifting the Dusty Veil With Near- and Mid-Infrared Photometry: I. Description and Applications of the Rayleigh-Jeans Color Excess Method
• The Gaia-ESO Survey: radial metallicity gradients and age-metallicity relation of stars in the Milky Way disk
• Estimating stellar birth radii and the time evolution of the Milky Way's ISM metallicity gradient
• On the Formation of Galactic Thick Disks
• The age-metallicity structure of the Milky Way disk
• Evolution of the Milky Way with radial motions of stars and gas I. The solar neighborhood and the thin and thick disk
• Constraining the thick disc formation scenario of the Milky Way
• The Besancon Galaxy model renewed I. Constraints on the local star formation history from Tycho data
• A reanalysis of the Gaia Data Release 2 photometric sensitivity curves using HST/STIS spectrophotometry
• An intuitive 3D map of the Galactic warp's precession traced by classical Cepheids
• Three-Dimensional Distribution of the ISM in the Milky Way Galaxy: III. The Total Neutral Gas Disk
• Gaia DR2 reveals a star formation burst in the disc 2-3 Gyr ago
• Evidence of a dynamically evolving Galactic warp
• Spatial variations in the Milky Way disc metallicity-age relation
• Evolution over time of the Milky Way's disc shape
• The Impact of Feedback During Massive Star Formation by Core Accretion
• Kinematics of the local disk from the RAVE survey and the Gaia first data release
• The relationship between mono-abundance and mono-age stellar populations in the Milky Way disk
• The GALAH Survey: Chemodynamics of the Solar Neighbourhood
• Photometric parameters of edge-on galaxies from 2MASS observations
• Towards a fully consistent Milky Way disc model: Part 1 The local model based on kinematic and photometric data
• Characterizing epochs of star formation across the Milky Way disc using age-metallicity distributions of GALAH stars
• The Magellanic Bridge cluster NGC 796: Deep optical AO imaging reveals the stellar content and initial mass function of a massive open cluster
• Towards a fully consistent Milky Way disc model - III. Constraining the initial mass function
• On the true shape of the upper end of the stellar initial mass function: The case of R136
• Does the stellar distribution flare? A comparison of stellar scale heights with LAB HI data
• A bottom-heavy initial mass function for the likely-accreted blue-halo stars of the Milky Way
• Interstellar Gas and a Dark Disk
• The Impact of Feedback in Massive Star Formation. II. Lower Star Formation Efficiency at Lower Metallicity
• Dissecting the Gaia HR diagram within 200 pc
• Comparing Models for IMF Variation Across Cosmological Time in Milky Way-like Galaxies
• Towards a fully consistent Milky Way disc model - II. The local disc model and SDSS data of the NGP region
• Modelling the Milky Way. I -- Method and first results fitting the thick disk and halo with DES-Y3 data
• A new dynamically self-consistent version of the Besançon Galaxy Model
• Towards a fully consistent Milky Way disk model -- IV. The impact of Gaia DR2 and APOGEE
• Local disc model in view of Gaia DR1 and RAVE data

Cited by in corpus (1)

• Spectroscopic age estimates for APOGEE red-giant stars: Precise spatial and kinematic trends with age in the Galactic disc