Search for galactic structures and study of their kinematics in the Gaia era

TL;DR

This paper reviews Gaia catalog data for galactic structure analysis, highlighting new insights into stellar kinematics, the Radcliffe wave, and phase spirals, with implications for understanding the Galaxy's rotation and spiral structure.

Contribution

It presents new high-precision kinematic parameters of stellar groups and discusses the properties and implications of the Radcliffe wave and phase spirals in the Gaia era.

Findings

Gaia data enables high-accuracy estimation of stellar kinematic parameters.

The Radcliffe wave's properties are characterized with new data.

A phase spiral in the z-Vz plane is identified using Gaia data.

Abstract

The characteristics of Gaia catalogues, such as trigonometric parallaxes and proper motions of stars, are discussed. Radial velocities of stars are also important for studying spatial motions. The most important results of the kinematics analysis of stellar groups from the nearest vicinity of the Sun are noted, where Gaia data allow estimating a number of parameters with unprecedentedly high accuracy. The issues related to the rotation of the Galaxy and its spiral structure are touched upon. The properties of the Radcliffe wave are discussed in the light of new data. An answer is obtained to the question of the existence of an analogue of the Radcliffe wave in other places of the Galaxy. The discovery of a phase spiral in the $z-V_z$ plane, made using Gaia data, is noted.