Constraining the Milky Way assembly history with Galactic Archaeology

被引：19

作者：

Minchev, I. ^{[1
]}

机构：

[1] Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany

来源：

ASTRONOMISCHE NACHRICHTEN | 2016年 / 337卷 / 07期

关键词：

Galaxy: abundances; Galaxy: disk; Galaxy: evolution; Galaxy: formation; Galaxy: kinematics and dynamics; STELLAR VELOCITY DISTRIBUTION; OUTER LINDBLAD RESONANCE; SIMULATED DISC GALAXIES; BARRED SPIRAL GALAXIES; DARK-MATTER UNIVERSE; EDGE-ON GALAXIES; SOLAR NEIGHBORHOOD; THICK DISK; CHEMICAL EVOLUTION; RADIAL MIGRATION;

D O I：

10.1002/asna.201612366

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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. (C) 2016 WILEY-VCH Verlag GmbH&Co. KGaA, Weinheim

引用

页码：703 / 726

页数：24

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