Galactic Archaeology with Gaia

Abstract

The Gaia mission has revolutionized our view of the Milky Way and its satellite citizens. The field of Galactic Archaeology has been piecing together the formation and evolution of the Galaxy for decades, and we have made great strides, with often limited data, towards discovering and characterizing the subcomponents of the Galaxy and its building blocks. Now, the exquisite 6D phase-space plus chemical information from Gaia and its complementary spectroscopic surveys has handed us a plethora of data to pour over as we move towards a quantitative rather than qualitative view of the Galaxy and its progenitors. We review the state of the field in the post-Gaia era, and examine the key lessons that will dictate the future direction of Galactic halo research.

Accepted Review article for New Astronomy Reviews (as part of a Special Issue: "Gaia, the first crop of discoveries")

References in corpus (89)

• The Gaia mission
• Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties
• The Radial Velocity Experiment (RAVE): first data release
• Galactic chemical evolution: Carbon through Zinc
• The GALAH Survey: Scientific Motivation
• The Milky Way's Circular Velocity Curve to 60 kpc and an Estimate of the Dark Matter Halo Mass from Kinematics of ~2400 SDSS Blue Horizontal Branch Stars
• Two Stellar Components in the Halo of the Milky Way
• Gaia Data Release 1: Astrometry - one billion positions, two million proper motions and parallaxes
• The Milky Way Tomography with SDSS: II. Stellar Metallicity
• Beasts of the Southern Wild: Discovery of nine Ultra Faint satellites in the vicinity of the Magellanic Clouds
• Carbon Enhanced Metal-Poor Stars. I. Chemical Compositions of 26 Stars
• Evidence for Two Early Accretion Events That Built the Milky Way Stellar Halo
• Tracing Galaxy Formation with Stellar Halos II: Relating Substructure in Phase- and Abundance-Space to Accretion Histories
• Evidence from the H3 Survey that the Stellar Halo is Entirely Comprised of Substructure
• The Dual Origin of Stellar Halos
• 4MOST: Project overview and information for the First Call for Proposals
• The Current Status of Galaxy Formation
• Star formation in a galactic outflow
• Rings and Radial Waves in the Disk of the Milky Way
• A time-resolved picture of our Milky Way's early formation history
• The Galaxy and its stellar halo: insights on their formation from a hybrid cosmological approach
• From dawn till disk: Milky Way's turbulent youth revealed by the APOGEE+Gaia data
• The Causes of Halo Shape Changes Induced by Cooling Baryons: Disks Versus Substructures
• Binarity in Carbon-Enhanced Metal-Poor stars
• Complete element abundances of nine stars in the r-process galaxy Reticulum II
• Kinematics of the stellar halo and the mass distribution of the Milky Way using BHB stars
• Building Late-Type Spiral Galaxies by In-Situ and Ex-Situ Star Formation
• The Hercules-Aquila Cloud
• The Streams of the Gaping Abyss: A population of entangled stellar streams surrounding the Inner Galaxy
• Reverse engineering the Milky Way
• Galactic Dark Matter Halos and Globular Cluster Populations. III: Extension to Extreme Environments
• Multi-Element Abundance Measurements from Medium-Resolution Spectra. IV. Alpha Element Distributions in Milky Way Dwarf Satellite Galaxies
• Disentangling the Galactic Halo with APOGEE: I. Chemical and Kinematical Investigation of Distinct Metal-Poor Populations
• The total stellar halo mass of the Milky Way
• The E-MOSAICS project: tracing galaxy formation and assembly with the age-metallicity distribution of globular clusters
• The Fall of a Giant. Chemical evolution of Enceladus, alias the Gaia Sausage
• An R-process enhanced star in the dwarf galaxy Tucana III
• A box full of chocolates: The rich structure of the nearby stellar halo revealed by Gaia and RAVE
• Halo Substructure in the SDSS-Gaia Catalogue : Streams and Clumps
• All-Sky Dynamical Response of the Galactic Halo to the Large Magellanic Cloud
• Timing the Early Assembly of the Milky Way with the H3 Survey
• Satellites of Simulated Galaxies: survival, merging, and their relation to the dark and stellar halos
• Detection of the Milky Way reflex motion due to the Large Magellanic Cloud infall
• Weighing the stellar constituents of the Galactic halo with APOGEE red giant stars
• Halo Star Streams in the Solar Neighborhood
• The Chemical Compositions of Accreted and {\it in situ} Galactic Globular Clusters According to SDSS/APOGEE
• A Tail of Two Populations: Chemo-dynamics of the Sagittarius Stream and Implications for its Original Mass
• Hot Stuff for One Year (HSOY) - A 583 million star proper motion catalogue derived from Gaia DR1 and PPMXL
• Two Disk Components from a Gas Rich Disk-Disk Merger
• Weak Galactic halo--dwarf spheroidal connection from RR Lyrae stars
• Disassembling the Galaxy with angle-action coordinates
• Reconstructing the Disrupted Dwarf Galaxy $Gaia$-Sausage/Enceladus Using its Stars and Globular Clusters
• The oldest and most metal poor stars in the APOSTLE Local Group simulations
• Fashionably Late? Building up the Milky Way's Inner Halo
• Elevated r-process enrichment in Gaia Sausage and Sequoia
• The first all-sky view of the Milky Way stellar halo with Gaia+2MASS RR Lyrae
• The Pristine Inner Galaxy Survey (PIGS) I: Tracing the kinematics of metal-poor stars in the Galactic bulge
• Predicted Extension of the Sagittarius Stream to the Milky Way Virial Radius
• Dynamically Tagged Groups of Very Metal-poor Halo Stars from the HK and Hamburg/ESO Surveys
• Action-space clustering of tidal streams to infer the Galactic potential
• The Alpha-element knee of the Sagittarius Stream
• An all-sky proper motion map of the Sagittarius stream using Gaia DR2
• The Pisces Plume and the Magellanic Wake
• Disentangling the Galactic Halo with APOGEE: II. Chemical and Star Formation Histories for the Two Distinct Populations
• The Stellar Halo of the Galaxy is Tilted & Doubly Broken
• Multiple phase spirals suggest multiple origins in Gaia DR3
• Quantifying the Stellar Halo's Response to the LMC's Infall with Spherical Harmonics
• A stellar stream remnant of a globular cluster below the metallicity floor
• The Pristine Inner Galaxy Survey (PIGS) II: Uncovering the most metal-poor populations in the inner Milky Way
• The Clouds are breaking: tracing the Magellanic system with Gaia DR1 Mira variables
• Energy wrinkles and phase-space folds of the last major merger
• The fall of the Northern Unicorn: Tangential motions in the Galactic Anti-centre with SDSS and Gaia
• A Tilted Dark Halo Origin of the Galactic Disk Warp and Flare
• The detailed chemical abundance patterns of accreted halo stars from the optical to infrared
• Quadratic genetic modifications: a streamlined route to cosmological simulations with controlled merger history
• How Unusual is the Milky Way's Assembly History?
• Chemical Analysis of the Ultra-Faint Dwarf Galaxy Grus~II. Signature of high-mass stellar nucleosynthesis
• Evidence for sub-Chandrasekhar Type Ia supernovae from the last major merger
• The Unmixed Debris of Gaia-Sausage/Enceladus in the Form of a Pair of Halo Stellar Overdensities
• Disentangling the Virgo Overdensity with RR Lyrae stars
• The Pristine survey -- XVII. The C-19 stream is dynamically hot and more extended than previously thought
• Taking the Milky Way for a spin: disc formation in the ARTEMIS simulations
• Spatial and Velocity clumping in an SDSS blue horizontal branch star catalogue
• A new set of chisels for Galactic archaeology: Sc, V and Zn as taggers of accreted globular clusters
• Dynamics of Stellar Disk Tilting from Satellite Mergers
• Galaxy assembly revealed by globular clusters
• Unravelling the mass spectrum of destroyed dwarf galaxies with the metallicity distribution function
• Peeking beneath the precision floor -- II. Probing the chemo-dynamical histories of the potential globular cluster siblings, NGC 288 and NGC 362
• Stellar halo striations from assumptions of axisymmetry

Cited by in corpus (29)

• Characterisation of local halo building blocks: Thamnos and Sequoia
• Mapping the Milky Way with Gaia Bp/Rp spectra I: Systematic flux corrections and atmospheric parameters for 68 million stars
• How well can we unravel the accreted constituents of the Milky Way stellar halo? A test on cosmological hydrodynamical simulations
• Rediscovering the Milky Way with orbit superposition approach and APOGEE data II. Chrono-chemo-kinematics of the disc
• Trojan globular clusters: radial migration via trapping in bar resonances
• On the chaos induced by the Galactic bar on the orbits of nearby halo stars
• Globular cluster ages and their relation to high-redshift stellar cluster formation times from different globular cluster models
• Chronology of our Galaxy from Gaia colour-magnitude diagram fitting (ChronoGal) -- III. Age and metallicity distribution of Gaia-Sausage-Enceladus stars near the Sun
• Dynamical streams in the local stellar halo
• Cosmological Simulations of Stellar Halos with Gaia Sausage-Enceladus Analogues: Two Sausages, One Bun?
• Mapping the Distant and Metal-Poor Milky Way with SDSS-V
• Nearby stellar substructures in the Galactic halo from DESI Milky Way Survey Year 1 Data Release
• Dark Matter Velocity Distributions for Direct Detection: Astrophysical Uncertainties are Smaller Than They Appear
• The effect of environment on the mass assembly history of the Milky Way and M31
• A slow spin to win -- the gradual evolution of the proto-Galaxy to the old disc
• Milky Way's Metal-Poor Stars display Chemical Transition near the Solar Radius
• Auriga Superstars: Improving the resolution and fidelity of stellar dynamics in cosmological galaxy simulations
• HE0144-4657: A Carbon-Enhanced Ultra Metal-Poor Star ([Fe/H] ~ -4.1) from the Helmi Stream Disrupted Dwarf Galaxy
• Trustworthy scientific inference with generative models
• Searching for stars ejected from the Galactic Centre in DESI
• First large scale spatial and velocity patterns of local metal-rich stars in the Milky Way
• Game Theory in Cosmology
• Quantifying the Milky Way, LMC and their interaction using all-sky kinematics of outer halo stars
• GSE vs. LMC: reshaping of radially biased stellar haloes by satellites
• SF-R You Sure? The Conflicting Role of Star Formation Rates in Constraining the Evolution of Milky Way Analogues in Cosmological Simulations
• Globular clusters of the Gaia Enceladus/Sausage -- I. Orbital and dynamical evolution on cosmological timescales
• How to Build an Empirical Speed Distribution for Dark Matter in the Solar Neighborhood
• Constraining the population of dark matter halo shapes using hierarchical inference with extragalactic stellar streams
• Searching for and characterizing halo substructures with the GALAH DR4 survey