Milky Way dynamics in light of Gaia

IF 11.7 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

New Astronomy Reviews Pub Date : 2025-01-22 DOI:10.1016/j.newar.2024.101721

Jason A.S. Hunt, Eugene Vasiliev

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引用次数: 0

Abstract

The Gaia mission has triggered major developments in the field of Galactic dynamics in recent years, which we discuss in this review. The structure and kinematics of all Galactic components – disc, bar/bulge and halo – are now mapped in great detail not only in the Solar neighbourhood, but across a large part of the Milky Way. The dramatic improvements in the coverage and precision of observations revealed various disequilibrium processes, such as perturbations in the Galactic disc and the deformations of the outer halo, which are partly attributed to the interaction with satellite galaxies. The knowledge of the gravitational potential at all scales has also advanced considerably, but we are still far from having a consistent view on the key properties of the Galaxy, such as the bar pattern speed or the mass profile and shape of the dark halo. The complexity and interplay of several dynamical processes makes the interpretation of observational data challenging, and it is fair to say that more theoretical effort is needed to fully reap the fruit of the Gaia revolution.

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来源期刊

New Astronomy Reviews 地学天文-天文与天体物理

CiteScore

18.60

自引率

1.70%

发文量

审稿时长

11.3 weeks

期刊介绍： New Astronomy Reviews publishes review articles in all fields of astronomy and astrophysics: theoretical, observational and instrumental. This international review journal is written for a broad audience of professional astronomers and astrophysicists. The journal covers solar physics, planetary systems, stellar, galactic and extra-galactic astronomy and astrophysics, as well as cosmology. New Astronomy Reviews is also open for proposals covering interdisciplinary and emerging topics such as astrobiology, astroparticle physics, and astrochemistry.