The GALAH survey: An abundance, age, and kinematic inventory of the solar neighbourhood made with TGAS

Abstract

The overlap between the spectroscopic Galactic Archaeology with HERMES (GALAH) survey & $Gaia$ provides a high-dimensional chemodynamical space of unprecedented size. We present a first analysis of a subset of this overlap, of 7066 dwarf, turn-off, & sub-giant stars. [...] We investigate correlations between chemical compositions, ages, & kinematics for this sample. Stellar parameters & elemental abundances are derived from the GALAH spectra with the spectral synthesis code SME. [...] We report Li, C, O, Na, Mg, Al, Si, K, Ca, Sc, Ti, V, Cr, Mn, Co, Ni, Cu, Zn, Y, as well as Ba & we note that we employ non-LTE calculations for Li, O, Al, & Fe. We show that the use of astrometric & photometric data improves the accuracy of the derived spectroscopic parameters, especially $\log g$. [...] we recover the result that stars of the high-$\alpha$ sequence are typically older than stars in the low-$\alpha$ sequence, the latter spanning $-0.7<$[Fe/H]$<+0.5$. While these two sequences become indistinguishable in [$\alpha$/Fe] vs. [Fe/H] at the metal-rich regime, we find that age can be used to separate stars from the extended high-$\alpha$ & the low-$\alpha$ sequence even in this regime. [...] we find that the old stars ($>8$ Gyr have lower angular momenta $L_z$ than the Sun, which implies that they are on eccentric orbits & originate from the inner disk. Contrary to some previous smaller scale studies we find a continuous evolution in the high-$\alpha$-sequence up to super-solar [Fe/H] rather than a gap, which has been interpreted as a separate "high-$\alpha$ metal-rich" population. Stars in our sample that are younger than 10 Gyr, are mainly found on the low $\alpha$-sequence & show a gradient in $L_z$ from low [Fe/H] ($L_z>L_{z,\odot }$) towards higher [Fe/H] ($L_z<L_{z,\odot }$), which implies that the stars at the ends of this sequence are likely not originating from the close solar vicinity.

arXiv commentRevised paper resubmitted to A&A, 20 pages (+10 pages appendix), 25 figures, 2 tables, 1 catalog

References in corpus (125)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The chemical composition of the Sun
• Validation of the new Hipparcos reduction
• Binary companions of evolved stars in APOGEE DR14: Search method and catalog of ~5,000 companions
• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• The Apache Point Observatory Galactic Evolution Experiment (APOGEE)
• The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of 14,000 F and G dwarfs
• galpy: A Python Library for Galactic Dynamics
• Nucleosynthesis in Chandrasekhar Mass Models for Type Ia Supernovae and Constraints on Progenitor Systems and Burning-Front Propagation
• 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
• Color Transformations for the 2MASS Second Incremental Data Release
• Elemental Abundance Survey of The Galactic Thick Disk
• Galactic chemical evolution: Carbon through Zinc
• New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey
• The GALAH Survey: Scientific Motivation
• Stellar Chemical Signatures And Hierarchical Galaxy Formation
• The Chemical Compositions of Galactic Disk F and G Dwarfs
• ASPCAP: The Apogee Stellar Parameter and Chemical Abundances Pipeline
• Galactic Evolution of Sr, Y, Zr: A Multiplicity of Nucleosynthetic Processes
• 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
• Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program.Galactic stellar populations and planets
• Two distinct halo populations in the solar neighborhood. Evidence from stellar abundance ratios and kinematics
• Three-dimensional delayed-detonation models with nucleosynthesis for Type Ia supernovae
• 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
• Chemodynamical evolution of the Milky Way disk I: The solar vicinity
• The spatial structure of mono-abundance sub-populations of the Milky Way disk
• Nominal values for selected solar and planetary quantities: IAU 2015 Resolution B3
• Spectroscopy Made Easy: Evolution
• The Evolution of Isotope Ratios in the Milky Way Galaxy
• Target Selection for the Apache Point Observatory Galactic Evolution Experiment (APOGEE)
• The Cannon: A data-driven approach to stellar label determination
• Non-LTE calculations for neutral Na in late-type stars using improved atomic data
• A New Mechanism for Radial Migration in Galactic Disks: Spiral-Bar Resonance Overlap
• The GALAH Survey: Second Data Release
• NLTE line formation of Fe in late-type stars II: 1D spectroscopic stellar parameters
• Departures from LTE for neutral Li in late-type stars
• Gaia FGK Benchmark Stars - Metallicity
• Gaia FGK Benchmark Stars: Effective temperatures and surface gravities
• The delay-time distribution of type-Ia supernovae from Sloan II
• Spectroscopic stellar parameters for 582 FGK stars in the HARPS volume-limited sample. Revising the metallicity-planet correlation
• Synthetic Stellar Photometry - I. General considerations and new transformations for broad-band systems
• Inside Out and Upside Down: Tracing the Assembly of a Simulated Disk Galaxy Using Mono-Age Stellar Populations
• High-precision abundances of elements in solar twin stars: Trends with stellar age and elemental condensation temperature
• Red giant masses and ages derived from carbon and nitrogen abundances
• Chemodynamical Simulations of the Milky Way Galaxy
• Radial mixing and the transition between the thick and thin Galactic discs
• The Gaia-ESO Survey: the Galactic Thick to Thin Disc transition
• Gaia-ESO Survey: The analysis of high-resolution UVES spectra of FGK-type stars
• The stellar population structure of the Galactic disk
• Lithium abundances in nearby FGK dwarf and subgiant stars: internal destruction, Galactic chemical evolution, and exoplanets
• Formation and Evolution of the Disk System of the Milky Way: [alpha/Fe] Ratios and Kinematics of the SEGUE G-Dwarf Sample
• The GALAH Survey: Observational Overview and Gaia DR1 companion
• Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program II: Cu, Zn, Sr, Y, Zr, Ba, Ce, Nd and Eu
• Spectroscopic determination of masses (and implied ages) for red giants
• Lifting the Dusty Veil With Near- and Mid-Infrared Photometry: I. Description and Applications of the Rayleigh-Jeans Color Excess Method
• Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars. VI. Age and abundance structure of the stellar populations in the central sub-kpc of the Milky Way
• Galactic Archaeology with asteroseismic ages: evidence for delayed gas infall in the formation of the Milky Way disc
• Non-LTE line formation of Fe in late-type stars - III. 3D non-LTE analysis of metal-poor stars
• Young [$\alpha$/Fe]-enhanced stars discovered by CoRoT and APOGEE: What is their origin?
• The age-metallicity structure of the Milky Way disk
• A new alpha-enhanced super-solar metallicity population
• Two distinct halo populations in the solar neighborhood. II. Evidence from stellar abundances of Mn, Cu, Zn, Y, and Ba
• The Long-term Evolution of the Galactic Disk Traced by Dissolving Star Clusters
• Chemical abundances of 451 stars from the HARPS GTO planet search program: Thin disc, thick disc, and planets
• Carbon, nitrogen and $\alpha$-element abundances determine the formation sequence of the Galactic thick and thin disks
• Systematic non-LTE study of the $-2.6\le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu
• The influence of atomic diffusion on stellar ages and chemical tagging
• Measuring Radial Orbit Migration in the Milky Way Disk
• Non-LTE aluminium abundances in late-type stars
• Estimating distances from parallaxes. III. Distances of two million stars in the Gaia DR1 catalogue
• Origin of chemically distinct discs in the Auriga cosmological simulations
• The TESS-HERMES survey Data Release 1: high-resolution spectroscopy of the TESS southern continuous viewing zone
• Carbon and oxygen abundances in stellar populations
• Atomic and Molecular Data for Optical Stellar Spectroscopy
• Non-LTE oxygen line formation in 3D hydrodynamic model stellar atmospheres
• Label Transfer from APOGEE to LAMOST: Precise Stellar Parameters for 450,000 LAMOST Giants
• The origin and evolution of the odd-Z iron-peak elements Sc, V, Mn, and Co in the Milky Way stellar disk
• Enhanced production of barium in low-mass stars: evidence from open clusters
• Discovery and Characterization of 3000+ Main-Sequence Binaries from APOGEE Spectra
• A box full of chocolates: The rich structure of the nearby stellar halo revealed by Gaia and RAVE
• The nucleosynthetic history of elements in the Galactic disk: [X/Fe] - age relations from high-precision spectroscopy
• Abundances and possible diffusion of elements in M67 stars
• A radial age gradient in the geometrically thick disk of the Milky Way
• The AMBRE project: The thick thin disk and thin thick disk of the Milky Way
• Correlation between lithium abundances and ages of solar twin stars
• Disassembling the Galaxy with angle-action coordinates
• s-Processing in the Galactic Disk. I. Super-Solar Abundances of Y, Zr, La, Ce in Young Open Clusters
• Dissecting stellar chemical abundance space with t-SNE
• Age-resolved chemistry of red giants in the solar neighbourhood
• Signatures of unresolved binaries in stellar spectra: implications for spectral fitting
• Metal-Poor Lithium-Rich Giants in the Radial Velocity Experiment Survey
• Effective temperature determinations of late-type stars based on 3D non-LTE Balmer line formation
• The GALAH survey: The data reduction pipeline
• On the metallicity dependance of the [Y/Mg] - age relation for solar type stars
• Gaia FGK Benchmark stars: Opening the black box of stellar element abundance determination
• The Galah Survey: Classification and diagnostics with t-SNE reduction of spectral information
• Magnesium isotope ratios in Hyades stars
• Dissecting simulated disc galaxies I: the structure of mono-age populations
• Prospects for chemically tagging stars in the Galaxy
• Determining Ages of APOGEE Giants with Known Distances
• Masses and Ages for 230,000 LAMOST Giants, via Their Carbon and Nitrogen Abundances
• The Galactic chemical evolution of oxygen inferred from 3D non-LTE spectral line formation calculations
• The Gaia-ESO Survey: calibration strategy
• Multi-Object Spectroscopy Field Configuration by Simulated Annealing
• Fundamental stellar parameters and metallicities from Bayesian spectroscopy. Application to low- and high-resolution spectra
• The AMBRE project: Iron-peak elements in the solar neighbourhood
• A peculiarity of metal-poor stars with planets ?
• The GALAH Survey: Verifying abundance trends in the open cluster M67 using non-LTE spectroscopy
• Improved distances and ages for stars common to TGAS and RAVE
• Zinc in the Sculptor dwarf spheroidal galaxy
• The K2-HERMES Survey. I. Planet Candidate Properties from K2 Campaigns 1-3
• The GALAH survey: properties of the Galactic disk(s) in the solar neighbourhood
• The AMBRE project: a study of Li evolution in the Galactic thin and thick discs
• The GALAH Survey: Stellar streams and how stellar velocity distributions vary with Galactic longitude, hemisphere and metallicity
• Stellar ages and masses in the solar neighbourhood: Bayesian analysis using spectroscopy and Gaia DR1 parallaxes
• Kinematic structures of the Solar neighbourhood revealed by Gaia DR1/TGAS and RAVE
• APOGEE chemical tagging constraint on the maximum star cluster mass in the $\alpha$-enhanced Galactic disk
• Observing the products of stellar evolution in the old open cluster M67 with APOGEE
• The Rotation-Metallicity Relation for the Galactic Disk as Measured in the Gaia DR1 TGAS and APOGEE Data

Cited by in corpus (86)

• The GALAH+ Survey: Third Data Release
• Evidence for Two Early Accretion Events That Built the Milky Way Stellar Halo
• Galactic Archaeology with asteroseismic ages: evidence for delayed gas infall in the formation of the Milky Way disc
• Accuracy and precision of industrial stellar abundances
• On the origin of the chemical bimodality of disk stars: A tale of merger and migration
• Carbon, oxygen, and iron abundances in disk and halo stars. Implications of 3D non-LTE spectral line formation
• Abundance to age ratios in the HARPS-GTO sample with Gaia DR2: Chemical clocks for a range of [Fe/H]
• High-precision abundances of elements in solar-type stars. Evidence of two distinct sequences in abundance-age relations
• Timing the Early Assembly of the Milky Way with the H3 Survey
• StarHorse results for spectroscopic surveys + Gaia DR3: Chrono-chemical populations in the solar vicinity, the genuine thick disk, and young-alpha rich stars
• APOGEE DR16: a multi-zone chemical evolution model for the Galactic disc based on MCMC methods
• The GALAH Survey: Chemical tagging and chrono-chemodynamics of accreted halo stars with GALAH+ DR3 and $Gaia$ eDR3
• Spatial variations in the Milky Way disc metallicity-age relation
• Modelling Neutron Star-Black Hole Binaries: Future Pulsar Surveys and Gravitational Wave Detectors
• The GALAH Survey: Chemodynamics of the Solar Neighbourhood
• Revisiting long-standing puzzles of the Milky Way: the Sun and its vicinity as typical outer disk chemical evolution
• NLTE Chemical abundances in Galactic open and globular clusters
• Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program IV. Carbon and C/O ratios for Galactic stellar populations and planet hosts
• VINTERGATAN III: how to reset the metallicity of the Milky Way
• Chemical Evolution in the Milky Way: Rotation-based ages for APOGEE-Kepler cool dwarf stars
• The Gaia-ESO survey: 3D NLTE abundances in the open cluster NGC 2420 suggest atomic diffusion and turbulent mixing at the origin of chemical abundance variations
• SteParSyn: A Bayesian code to infer stellar atmospheric parameters using spectral synthesis
• The GALAH survey: A census of lithium-rich giant stars
• The Gaia-ESO Survey: Age-chemical-clock relations spatially resolved in the Galactic disc
• Abundance ratios in GALAH DR2 and their implications for nucleosynthesis
• Beyond the two-infall model I. Indications for a recent gas infall with Gaia DR3 chemical abundances
• Gyro-Kinematic Ages for around 30,000 Kepler Stars
• The challenge of simultaneously matching the observed diversity of chemical abundance patterns in cosmological hydrodynamical simulations
• First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances
• The GALAH Survey: A new constraint on cosmological lithium and Galactic lithium evolution from warm dwarf stars
• Abundances in the Milky Way across five nucleosynthetic channels from 4 million LAMOST stars
• Constraining the solar neighbourhood age-metallicity relation from white dwarf-main sequence binaries
• On the variation of carbon abundance in galaxies and its implications
• Radial structure and formation of the Milky Way disc
• Cannibals in the thick disk II -- Radial-velocity monitoring of the young alpha-rich stars
• The Gaia-ESO Survey: Carbon abundance in the Galactic thin and thick disks
• [Mg/Fe] ratios in the solar neighbourhood: stellar yields and chemical evolution scenarios
• The RAdial Velocity Experiment (RAVE): Parameterisation of RAVE spectra based on convolutional neural networks
• Are the Milky Way and Andromeda unusual? A comparison with Milky Way and Andromeda Analogs
• Know thy star, know thy planet: Chemo-kinematically characterizing TESS targets
• Combined APOGEE-GALAH stellar catalogues using the Cannon
• The Ultraviolet Extinction Map and Dust Property at High Galactic Latitude
• Star Formation Timescales of the Halo Populations from Asteroseismology and Chemical Abundances
• Mapping radial abundance gradients with Gaia-ESO open clusters: Evidence of recent gas accretion in the Milky Way disk
• The AMBRE Project: Spectrum normalisation influence on Mg abundances in the metal-rich Galactic disc
• Galactic chemical evolution of exoplanet host stars: Are high-mass planetary systems young?
• The AMBRE Project: Solar neighbourhood chemodynamical constraints on Galactic disc evolution
• Universal properties of the high- and low-α disk: small intrinsic abundance scatter and migrating stars
• Super-Earths and sub-Neptunes are Insensitive to Stellar Metallicity
• On the Color-Metallicity Relation of the Red Clump and the Reddening Toward the Magellanic Clouds
• The Gaia-ESO Survey: Oxygen abundance in the Galactic thin and thick disks
• The STAR-MELT Python package for emission line analysis of YSOs
• Abundances of alpha-Process Elements in Thin-Disk, Thick-Disk, and Halo Stars of the Galaxy: Non-LTE Analysis
• Analytic solution of Chemical Evolution Models with Type Ia SNe
• Disc dichotomy signature in the vertical distribution of [Mg/Fe] and the delayed gas infall scenario
• Characterizing Observed Extra Mixing Trends in Red Giants using the Reduced Density Ratio from Thermohaline Models
• MgII 2797, 2803 emission in a large sample of low-metallicity star-forming galaxies from SDSS DR14
• The Gaia-ESO Survey: Spectroscopic-asteroseismic analysis of K2 stars in Gaia-ESO
• Estimating $\left[\alpha /\text{Fe}\right]$ from Gaia low-resolution BP/RP spectra using the ExtraTrees algorithm
• PARSEC V2.0: Rotating tracks and isochrones for seven addtional metallicities in the range Z=0.0001-0.03
• Impacts of Water Latent Heat on the Thermal Structure of Ultra-Cool Objects: Brown Dwarfs and Free-Floating Planets
• Spatial and Kinematic Clustering of Stars in the Galactic Disk
• Using heritability of stellar chemistry to reveal the history of the Milky Way
• Mass and Age determination of the LAMOST data with different Machine Learning methods
• $\mathrm{H}\alpha$ chromospheric activity of F-, G-, and K-type stars observed by the LAMOST Medium-Resolution Spectroscopic Survey
• Fine Structure of the Age-Chromospheric Activity Relation in Solar-Type Stars: II. H$\alpha$ Line
• A machine learning approach to photometric metallicities of giant stars
• The GALAH Survey: Stellar parameters and abundances for 800,000 Gaia RVS spectra using GALAH DR4 and The Cannon
• RR Lyrae stars as probes of the outer Galactic halo: Chemical and kinematic analysis of a pilot sample
• Estimating the age-metallicity distribution of a stellar sample from the probability distributions of the individual stars
• Chemical characterisation of the X-shooter Spectral Library (XSL): [Mg/Fe] and [Ca/Fe] abundances
• First Resolution of Microlensed Images of a Binary-Lens Event
• Neutron-Capture Element Signatures in Globular Clusters: Insights from the Gaia-ESO Survey
• Stellar Population Astrophysics (SPA) with the TNG: NLTE atmospheric parameters and abundances of giant stars in 33 Open Clusters
• S-Process Nucleosynthesis in Chemically Peculiar Binaries
• CN and CO Features: Key Indicators of Red Giant Evolutionary Phase in Moderate-Resolution X-Shooter Spectra
• Spectral Evidence of Solar Neighborhood Analogs in CALIFA Galaxies
• Calibrating the metallicity of M dwarfs in wide physical binaries with F-, G-, and K-primaries -- II: Carbon, oxygen, and odd-Z iron-peak abundances of the primary stars
• OGLE-2017-BLG-1434Lb: Confirmation of a Cold Super-Earth using Keck Adaptive Optics
• Peculiarities of Abundances of Selected Elements in Metal-Rich Field RR Lyrae Stars
• Two faces of Gaia-Sausage-Enceladus: Mining the chemical abundance space with graph attention networks
• A chemical perspective on planet formation in reduced systems
• Local metallicity distribution function derived from Galactic large-scale radial iron pattern modelling
• Turning Points in the Age-Metallicity Relations -- Created by Late Satellite Infall and Enhanced by Radial Migration
• Neutron-capture elements record the ordered chemical evolution of the disc over time
• Ages of Main-Sequence Turn-Off Stars from the GALAH Survey