Hyades kinematics and the relationship between galactic coordinates and its angular distance from the apex with GAIA EDR3

Al-Johani, AS, Elsanhoury, WH, Al-Juhani, A, Al-Qadhi, G, Al-Anazi, M, Al-Balwi, S, Al-Hamdi, S, Al-Qahtani, S, Al-Shehri, W
Kinemat. fiz. nebesnyh tel (Online) 2022, 38(5):21-30
https://doi.org/10.15407/kfnt2022.05.021
Start Page: Structure and Dynamics of the Galaxy
Language: Ukrainian
Abstract: 

In this paper, we have improved the Hyades members with aid of the Gaia EDR3 source. We have studied their kinematics, including computations of the convergent point with AD-diagram method such as (A0, D0) = (79.48 ± 0.11°, 6.85 ± 0.38°), their spatial velocities U, V, W (km/s), their morphology with 3D. A relation was established for Hyades stars between their Galactic coordinates l, b and the angular distances l from the vertex. The precision criteria of this relation are very satisfactory and a correlation coefficient of value ≈ 0.90 was found which proves that the attributes are completely related linearly.

Keywords: AD-diagram method, Gaia EDR3, Hyades apex, spatial velocity

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