Constraining the Milky Way assembly history with Galactic Archaeology. Ludwig Biermann Award Lecture 2015

Abstract

The aim of Galactic Archaeology is to recover the evolutionary history of the Milky Way from its present day kinematical and chemical state. Because stars move away from their birth sites, the current dynamical information alone is not sufficient for this task. The chemical composition of stellar atmospheres, on the other hand, is largely preserved over the stellar lifetime and, together with accurate ages, can be used to recover the birthplaces of stars currently found at the same Galactic radius. In addition to the availability of large stellar samples with accurate 6D kinematics and chemical abundance measurements, this requires detailed modeling with both dynamical and chemical evolution taken into account. An important first step is to understand the variety of dynamical processes that can take place in the Milky Way, including the perturbative effects of both internal (bar and spiral structure) and external (infalling satellites) agents. We discuss here (1) how to constrain the Galactic bar, spiral structure, and merging satellites by their effect on the local and global disc phase-space, (2) the effect of multiple patterns on the disc dynamics, and (3) the importance of radial migration and merger perturbations for the formation of the Galactic thick disc. Finally, we discuss the construction of Milky Way chemo-dynamical models and relate to observations.

25 p., 17 fig., Review article associated with Ludwig Biermann Award Lecture 2015, Published in Astron. Nachr

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Cited by in corpus (20)

• A Gaia DR2 view of the Open Cluster population in the Milky Way
• Overview of the LAMOST survey in the first decade
• Fundamental relations for the velocity dispersion of stars in the Milky Way
• Characterising Open Clusters in the solar neighbourhood with the Tycho-Gaia Astrometric Solution
• Identifying resonances of the Galactic bar in Gaia DR2: I. Clues from action space
• Stellar mass distribution and star formation history of the Galactic disk revealed by mono-age stellar populations from LAMOST
• On the origin of the Galactic thin and thick discs, their abundance gradients and the diagnostic potential of their abundance ratios
• Mapping the Galactic disk with the LAMOST and Gaia Red clump sample. II. 3D asymmetrical kinematics of mono-age populations in the disk between 6$-14$ \,kpc
• Yule-Simpson's paradox in Galactic Archaeology
• Estimating stellar ages and metallicities from parallaxes and broadband photometry - successes and shortcomings
• The K2 Galactic Caps Project -- Going Beyond the \textit{Kepler} Field and Ageing the Galactic Disc
• The evolution of the Milky Way's thin disc radial metallicity gradient with K2 asteroseismic ages
• Deciphering the evolution of the Milky Way discs: Gaia APOGEE Kepler giant stars and the Besançon Galaxy Model
• The formation and survival of the Milky Way's oldest stellar disk
• On the mass and metallicity distribution of parent AGB stars of presolar SiC
• 2D chemical evolution models II. Effects of multiple spiral arm patterns on O, Eu, Fe and Ba abundance gradients
• Can ultralight dark matter explain the age-velocity dispersion relation of the Milky Way disc: A revised and improved treatment
• Local Stellar Kinematics from RAVE data -- VIII. Effects of the Galactic Disc Perturbations on Stellar Orbits of Red Clump Stars
• Spectroscopic Observations of Obscured Populations in the Inner Galaxy: 2MASS-GC02, Terzan 4, and the 200 km/s stellar peak
• Photometric Calibration of the [$\alpha$/Fe] Element: I. Calibration with UBV Photometry