Anisotropy of Halo Main Sequence Turnoff Stars Measured with New MMT Radial Velocities and Gaia Proper Motions
Charles King III, Warren R. Brown, Margaret J. Geller, Scott J. Kenyon, (SAO)
TL;DR
This study measures the anisotropy of the Milky Way's stellar halo using a dense sample of main sequence turnoff stars, combining Gaia eDR3 proper motions with new radial velocity data.
Contribution
It provides new measurements of halo anisotropy by integrating Gaia proper motions with newly obtained radial velocities for faint stars.
Findings
Halo anisotropy characterized with unprecedented detail
Enhanced understanding of stellar halo kinematics
New radial velocity data for faint halo stars
Abstract
We measure the anisotropy of the Milky Way stellar halo traced by a dense sample of 18<r<21 mag F-type main sequence turnoff stars using Gaia eDR3 proper motions and new radial velocity measurements published here.
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