PLATO as it is: a legacy mission for Galactic archaeology

Abstract

Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high-resolution chrono-chemo-kinematical maps of the Galaxy. Data from large-scale astrometric and spectroscopic surveys will soon provide us with a well-defined view of the current chemo-kinematical structure of the Milky Way, but will only enable a blurred view on the temporal sequence that led to the present-day Galaxy. As demonstrated by the (ongoing) exploitation of data from the pioneering photometric missions CoRoT, Kepler, and K2, asteroseismology provides the way forward: solar-like oscillating giants are excellent evolutionary clocks thanks to the availability of seismic constraints on their mass and to the tight age-initial-mass relation they adhere to. In this paper we identify five key outstanding questions relating to the formation and evolution of the Milky Way that will need precise and accurate ages for large samples of stars to be addressed, and we identify the requirements in terms of number of targets and the precision on the stellar properties that are needed to tackle such questions. By quantifying the asteroseismic yields expected from PLATO for red-giant stars, we demonstrate that these requirements are within the capabilities of the current instrument design, provided that observations are sufficiently long to identify the evolutionary state and allow robust and precise determination of acoustic-mode frequencies. This will allow us to harvest data of sufficient quality to reach a 10% precision in age. This is a fundamental pre-requisite to then reach the more ambitious goal of a similar level of accuracy, which will only be possible if we have to hand a careful appraisal of systematic uncertainties on age deriving from our limited understanding of stellar physics, a goal which conveniently falls within the main aims of PLATO's core science.

arXiv comment17 pages, 9 figures, accepted for publication in Astronomical Notes

References in corpus (128)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• The Gaia mission
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• PARSEC: stellar tracks and isochrones with the PAdova and TRieste Stellar Evolution Code
• The Transiting Exoplanet Survey Satellite
• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• SDSS-III: Massive Spectroscopic Surveys of the Distant Universe, the Milky Way Galaxy, and Extra-Solar Planetary Systems
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• The K2 Mission: Characterization and Early results
• SEGUE: A Spectroscopic Survey of 240,000 stars with g=14-20
• The New Galaxy: Signatures of its Formation
• Exploring the Milky Way stellar disk. A detailed elemental abundance study of 714 F and G dwarf stars in the Solar neighbourhood
• Radial Mixing in Galactic Discs
• The Chemical Evolution of the Galaxy: the two-infall model
• The Radial Velocity Experiment (RAVE): first data release
• Elemental Abundance Survey of The Galactic Thick Disk
• The GALAH Survey: Scientific Motivation
• 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
• Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars
• The KMOS^3D Survey: design, first results, and the evolution of galaxy kinematics from 0.7<z<2.7
• The age structure of stellar populations in the solar vicinity. Clues of a two-phase formation history of the Milky Way disk
• Asteroseismology of Solar-Type and Red-Giant Stars
• The Radial Velocity Experiment (RAVE): Fifth Data Release
• Determining stellar atmospheric parameters and chemical abundances of FGK stars with iSpec
• Fast core rotation in red-giant stars revealed by gravity-dominated mixed modes
• IRIS: A new generation of IRAS maps
• Gaia broad band photometry
• Spin down of the core rotation in red giants
• Chemodynamical evolution of the Milky Way disk I: The solar vicinity
• Simulations of Galaxy Formation in a Lambda CDM Universe I: Dynamical and Photometric Properties of a Simulated Disk Galaxy
• Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology
• The Emergence of the Thick Disk in a CDM Universe
• Seismic evidence for a rapidly rotating core in a lower-giant-branch star observed with Kepler
• A New Mechanism for Radial Migration in Galactic Disks: Spiral-Bar Resonance Overlap
• The Geneva-Copenhagen Survey of the Solar neighbourhood II. New uvby calibrations and rediscussion of stellar ages, the G dwarf problem, age-metallicity diagram, and heating mechanisms of the disk
• The thick disks of spiral galaxies as relics from gas-rich, turbulent, clumpy disks at high redshift
• The Structure of the Milky Way's Bar Outside the Bulge
• Seismic constraints on the radial dependence of the internal rotation profiles of six Kepler subgiants and young red giants
• The APOKASC Catalog: An Asteroseismic and Spectroscopic Joint Survey of Targets in the Kepler Fields
• Galaxia: a code to generate a synthetic survey of the Milky Way
• Stellar Spin-Orbit Misalignment in a Multiplanet System
• The Milky Way has no thick disk
• Inside Out and Upside Down: Tracing the Assembly of a Simulated Disk Galaxy Using Mono-Age Stellar Populations
• Red giant masses and ages derived from carbon and nitrogen abundances
• CoRoT reveals a magnetic activity cycle in a Sun-like star
• Fundamental Properties of Stars using Asteroseismology from Kepler & CoRoT and Interferometry from the CHARA Array
• Galaxy Formation: CDM, Feedback and the Hubble Sequence
• Chemodynamical evolution of the Milky Way disk II: Variations with Galactic radius and height above the disk plane
• The Milky Way's Stellar Disk
• On detecting the large separation in the autocorrelation of stellar oscillation times series
• Galactic archaeology: mapping and dating stellar populations with asteroseismology of red-giant stars
• The GALAH Survey: Observational Overview and Gaia DR1 companion
• Chemodynamics of the Milky Way. I. The first year of APOGEE data
• Spectroscopic determination of masses (and implied ages) for red giants
• The Gaia-ESO Survey: radial metallicity gradients and age-metallicity relation of stars in the Milky Way disk
• Angular momentum transport in stellar interiors constrained by rotational splittings of mixed modes in red giants
• Asteroseismology of red giants from the first four months of Kepler data: Global oscillation parameters for 800 stars
• Young [$\alpha$/Fe]-enhanced stars discovered by CoRoT and APOGEE: What is their origin?
• On the Formation of Galactic Thick Disks
• Reconstructing the star formation history of the Milky Way disc(s) from chemical abundances
• Bayesian distances and extinctions for giants observed by Kepler and APOGEE
• Evolution of the Milky Way with radial motions of stars and gas I. The solar neighborhood and the thin and thick disk
• Chemical Cartography with APOGEE: Large-scale Mean Metallicity Maps of the Milky Way
• Age and helium content of the open cluster NGC 6791 from multiple eclipsing binary members. II. age dependencies and new insights
• Asteroseismic determination of obliquities of the exoplanet systems Kepler-50 and Kepler-65
• The Long-term Evolution of the Galactic Disk Traced by Dissolving Star Clusters
• Carbon, nitrogen and $\alpha$-element abundances determine the formation sequence of the Galactic thick and thin disks
• Verifying asteroseismically determined parameters of Kepler stars using hipparcos parallaxes: self-consistent stellar properties and distances
• Asteroseismology for "à la carte" stellar age-dating and weighing: Age and mass of the CoRoT exoplanet host HD 52265
• Constraining the thick disc formation scenario of the Milky Way
• Disk Galaxies and Galaxy Disks
• Signatures of radial migration in barred galaxies: Azimuthal variations in the metallicity distribution of old stars
• Radial mixing in the outer Milky Way disk caused by an orbiting satellite
• Oscillation frequencies for 35 \Kepler solar-type planet-hosting stars using Bayesian techniques and machine learning
• Measuring the vertical age structure of the Galactic disc using asteroseismology and SAGA
• Red giants observed by CoRoT and APOGEE: The evolution of the Milky Way's radial metallicity gradient
• Predicting the detectability of oscillations in solar-type stars observed by Kepler
• Metallicity Gradients in the Milky Way Disk as Observed by the SEGUE Survey
• The evolution of metallicity and metallicity gradients from z=2.7-0.6 with KMOS3D
• The Gaia-ESO Survey: the chemical structure of the Galactic discs from the first internal data release
• Kepler-91b: a planet at the end of its life. Planet and giant host star properties via light-curve variations
• Determining stellar parameters of asteroseismic targets: going beyond the use of scaling relations
• Oscillating red giants observed during Campaign 1 of the Kepler K2 mission: New prospects for galactic archaeology
• An accurate and self-consistent chemical abundance catalogue for the APOGEE/Kepler sample
• Spiral-induced velocity and metallicity patterns in a cosmological zoom simulation of a Milky Way-sized galaxy
• Galactic Archaeology with asteroseismology and spectroscopy: Red giants observed by CoRoT and APOGEE
• PLATO as it is: a legacy mission for Galactic archaeology
• Seismic constraints on rotation of Sun-like star and mass of exoplanet
• Cannibals in the thick disk: the young $\alpha -$rich stars as evolved blue stragglers
• Evidence for a sharp structure variation inside a red-giant star
• Spin alignment of stars in old open clusters
• Pseudobulge Formation as a Dynamical Rather than a Secular Process
• Detection of solar-like oscillations in relics of the Milky Way: asteroseismology of K giants in M4 using data from the NASA K2 mission
• Chemical gradients in the Milky Way from the RAVE data. I. Dwarf stars
• Post first dredge-up [C/N] ratio as age indicator. Theoretical calibration
• The RAVE-on catalog of stellar atmospheric parameters and chemical abundances for chemo-dynamic studies in the Gaia era
• The K2 M67 Study: Revisiting old friends with K2 reveals oscillating red giants in the open cluster M67
• The Gaia-ESO Survey: Probes of the inner disk abundance gradient
• Spin-orbit alignment of exoplanet systems: ensemble analysis using asteroseismology
• Amplitudes and lifetimes of solar-like oscillations observed by CoRoT* Red-giant versus main-sequence stars
• The relationship between mono-abundance and mono-age stellar populations in the Milky Way disk
• Chemical gradients in the Milky Way from the RAVE data. II. Giant stars
• Mapping a stellar disk into a boxy bulge: The outside-in part of the Milky Way bulge formation
• The Gaia-ESO Survey: calibration strategy
• Population synthesis to constrain Galactic and Stellar Physics- I- Determining age and mass of thin-disc red-giant stars
• Solar-like oscillations in red giants observed with \textit{Kepler}: influence of increased timespan on global oscillation parameters
• Metallicity-dependendent kinematics and morphology of the Milky Way bulge
• Probing the deep end of the Milky Way with \emph{Kepler}: Asteroseismic analysis of 854 faint Red Giants misclassified as Cool Dwarfs
• Testing Asteroseismic Scaling Relations using Eclipsing Binaries in Star Clusters and the Field
• Helium signature in red giant oscillation patterns observed by Kepler
• Atmospheric parameters and chemical properties of red giants in the CoRoT asteroseismology fields
• The Age and Distance of the Kepler Open Cluster NGC 6811 from an Eclipsing Binary, Turnoff Star Pulsation, and Giant Asteroseismology
• Spectroscopic Study of the Open Cluster NGC 6811
• Joint astrometric solution of Hipparcos and Gaia: A recipe for the Hundred Thousand Proper Motions project
• RAVE stars in K2 - I. Improving RAVE red giants spectroscopy using asteroseismology from K2 Campaign 1
• Models of red giants in the CoRoT asteroseismology fields combining asteroseismic and spectroscopic constraints
• Correlations between kinematics and metallicity in the Galactic bulge: a review
• The Controversial Star-Formation History and Helium Enrichment of the Milky Way Bulge
• Seismic detection of acoustic sharp features in the CoRoT target HD49933
• Asteroseismology of 19 low-luminosity red giant stars from Kepler
• Calibration of LAMOST Stellar Surface Gravities Using the Kepler Asteroseismic Data
• Amplitudes of solar-like oscillations in red-giant stars: Evidences for non-adiabatic effects using CoRoT observations
• The spectroscopic indistinguishability of red giant branch and red clump stars
• The Gaia-ESO Survey: Separating disk chemical substructures with cluster models
• Structure and Evolution of the Milky Way
• Hydrodynamical Adaptive Mesh Refinement Simulations of Disk Galaxies
• Uncertainties in models of stellar structure and evolution

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• Age dissection of the Milky Way discs: red giants in the Kepler field
• Ages and kinematics of chemically selected, accreted Milky Way halo stars
• The Fall of a Giant. Chemical evolution of Enceladus, alias the Gaia Sausage
• Chronologically dating the early assembly of the Milky Way
• StarHorse results for spectroscopic surveys + Gaia DR3: Chrono-chemical populations in the solar vicinity, the genuine thick disk, and young-alpha rich stars
• PLATO as it is: a legacy mission for Galactic archaeology
• Establishing the accuracy of asteroseismic mass and radius estimates of giant stars. I. Three eclipsing systems at [Fe/H]~ -0.3 and the need for a large high-precision sample
• Dissecting stellar chemical abundance space with t-SNE
• The Formation Times and Building Blocks of Milky Way-mass Galaxies in the FIRE Simulations
• Period spacings in red giants IV: Toward a complete description of the mixed-mode pattern
• The Gaia-ESO Survey: open clusters in Gaia-DR1 - a way forward to stellar age calibration
• Deep Learning Classification in Asteroseismology Using an Improved Neural Network: Results on 15000 Kepler Red Giants and Applications to K2 and TESS Data
• The PLATO field selection process I. Identification and content of the long-pointing fields
• Spectroscopic age estimates for APOGEE red-giant stars: Precise spatial and kinematic trends with age in the Galactic disc
• Mean density inversions for red giants and red clump stars
• Chronology of our Galaxy from Gaia Colour-Magnitude Diagram-fitting (ChronoGal). I. The formation and evolution of the thin disk from the Gaia Catalogue of Nearby Stars
• Abundances of neutron-capture elements in thin- and thick-disc stars in the solar neighbourhood
• Yule-Simpson's paradox in Galactic Archaeology
• SPInS, a pipeline for massive stellar parameter inference: A public Python tool to age-date, weigh, size up stars, and more
• Discovery of the local counterpart of disc galaxies at z > 4: The oldest thin disc of the Milky Way using Gaia-RVS
• Exoplanets in the Galactic context: Planet occurrence rates in the thin disk, thick disk and stellar halo of Kepler stars
• The K2 Galactic Caps Project -- Going Beyond the \textit{Kepler} Field and Ageing the Galactic Disc
• Reliability of stellar inclination estimated from asteroseismology: analytical criteria, mock simulations and Kepler data analysis
• The PLATO Solar-like Light-curve Simulator: A tool to generate realistic stellar light-curves with instrumental effects representative of the PLATO mission
• Deciphering the evolution of the Milky Way discs: Gaia APOGEE Kepler giant stars and the Besançon Galaxy Model
• The evolution of the Milky Way's thin disc radial metallicity gradient with K2 asteroseismic ages
• Seismic performance
• The bar resonances and low angular momentum moving groups in the Galaxy revealed by stellar ages
• A seismic scaling relation for stellar age II: The red giant branch
• On the impact of the structural surface effect on global stellar properties and asteroseismic analyses
• Exploring the diversity and similarity of radially anisotropic Milky Way-like stellar haloes: implications for disrupted dwarf galaxy searches
• The impact of two massive early accretion events in a Milky Way-like galaxy: repercussions for the buildup of the stellar disc and halo
• Overcoming the structural surface effect with a realistic treatment of turbulent convection in 1D stellar models
• Expanding the frontiers of cool-dwarf asteroseismology with ESPRESSO. Detection of solar-like oscillations in the K5 dwarf $\epsilon$ Indi
• The chemical composition of planet building blocks as predicted by stellar population synthesis
• Precise Masses, Ages of ~1.0 million RGB and RC stars observed by the LAMOST
• The Gaia-ESO Survey: Spectroscopic-asteroseismic analysis of K2 stars in Gaia-ESO
• Spectroscopy of Dwarf Stars Around the North Celestial Pole
• Metallicity Gradient of the Thick Disc Progenitor at High Redshift
• Planetary mass-radius relations across the galaxy
• He abundances in disc galaxies -- I. Predictions from cosmological chemodynamical simulations
• Asteroseismology of evolved stars with EGGMiMoSA I. Theoretical mixed-mode patterns from the subgiant to the RGB phase
• Masses and ages for metal-poor stars: a pilot program combining asteroseismology and high-resolution spectroscopic follow-up of RAVE halo stars
• The GALAH Survey: Velocity fluctuations in the Milky Way using red clump giants
• Advancing accuracy in age determinations of old-disk stars using an oscillating red giant in an eclipsing binary
• A catalogue of asteroseismically calibrated ages for APOGEE DR17. The predictions of a CatBoost machine learning model based on the [Mg/Ce] chemical clock and other stellar parameters
• LOTUS: A (non-)LTE Optimization Tool for Uniform derivation of Stellar atmospheric parameters
• StarFlow: Leveraging Normalizing Flows for Stellar Age Estimation in SDSS-V DR19
• New stellar age estimates using SPInS based on Gaia DR3 photometry and LAMOST DR8 abundances
• High-resolution spectroscopic study of dwarf stars in the northern sky: Na to Zn abundances in two fields with radii of 20 degrees
• Variability analysis of δ Scuti candidate stars
• The K2 Galactic Archaeology Program: Overview, target selection and survey properties
• The Spheroidal Bulge of the Milky Way: Chemodynamically Distinct from the Inner-Thick Disc and Bar
• FRA -- A new Fast, Robust and Automated pipeline for the detection and measurement of solar-like oscillations in time-series photometry of red-giant stars
• Chronos --- Taking the pulse of our Galactic neighbourhood (ESA Voyage 2050 White Paper)
• Dissecting stellar populations with manifold learning I. Validation of the method on a synthetic Milky Way-like galaxy
• Towards solar measurements of nuclear reaction rates
• PLATO Hare-and-Hounds exercise: Asteroseismic model fitting of main-sequence solar-like pulsators
• Detailed theoretical analysis of core Helium-burning stars: Mixed mode patterns I. Impact of the He-flash discontinuity and of induced semi-convection
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