The Tilt of the Velocity Ellipsoid of Different Galactic Disk Populations

• Published in: The Astrophysical journal Vol. 952; no. 2; pp. 163 - 172
• Main Authors: Sun, Weixiang, Shen, Han, Liu, Xiaowei
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.08.2023; IOP Publishing
• Subjects: Alignment; Astrophysics; Baryons; Disks; Displays; Ellipsoids; Galactic disk; Milky Way; Milky Way disk; Milky Way evolution; Milky Way formation; Oscillations; Populations; Stars; Stellar abundances; Stellar age; Stellar kinematics; Tracers; Velocity

The tilt of the velocity ellipsoid is a helpful tracer of the gravitational potential of the Milky Way. In this paper, we use nearly 140,000 red clump (RC) stars selected from LAMOST and Gaia to make a detailed analysis of the tilt of the velocity ellipsoid for various populations, as defined by ste...