Rotation of the Milky Way halo in the solar neighborhood based on GAIA DR3 catalog
- Authors: Tkachenko R.V.1, Bryndina A.P.1, Zhmailova A.В.1, Korchagin V.I.1
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Affiliations:
- Southern Federal University
- Issue: Vol 101, No 7 (2024)
- Pages: 632-640
- Section: Articles
- URL: https://journals.rcsi.science/0004-6299/article/view/274297
- DOI: https://doi.org/10.31857/S0004629924070055
- EDN: https://elibrary.ru/IUMOLX
- ID: 274297
Cite item
Abstract
The rotation of the Milky Way halo in the solar neighborhood is investigated using kinematic data from the GAIA DR3 catalog for RR Lyrae variable stars with parallax errors of less than 20%. Two criteria were used for selecting halo stars — kinematic and spatial. In both approaches, we confirm the existence of weak rotation of the halo in the direction opposite to the rotation of the Galactic disk with velocities of 4.08 ± 2.19 km/s for the kinematic criterion and 9.49 ± 2.59 km/s for the spatial criterion.
Keywords
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About the authors
R. V. Tkachenko
Southern Federal University
Author for correspondence.
Email: rtkachenko@sfedu.ru
Institute of Physics
Russian Federation, Rostov-on-DonA. P. Bryndina
Southern Federal University
Email: rtkachenko@sfedu.ru
Institute of Physics
Russian Federation, Rostov-on-DonA. В. Zhmailova
Southern Federal University
Email: rtkachenko@sfedu.ru
Institute of Physics
Russian Federation, Rostov-on-DonV. I. Korchagin
Southern Federal University
Email: rtkachenko@sfedu.ru
Institute of Physics
Russian Federation, Rostov-on-DonReferences
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