Parameters of the Radcliffe wave from masers, radio stars and T Tauri stars

Vadim Bobylev, Anisa Bajkova, Yury Mishurov

Submitted on 1 July 2022


The presence of the Radcliffe wave is shown both in the positions and in the vertical velocities of masers and radio stars belonging to the Local Arm. This gives the impression that the structure of the Radcliffe wave is not a wave in the full sense of the word. It is more like a local high-amplitude burst, rapidly fading away. Moreover, this structure has the largest amplitude in the immediate vicinity of the Sun, where the main ``contributors'' are the Gould Belt stars. Based on the spectral analysis of masers, the following estimates of the geometric and kinematic characteristics of the wave were obtained: the largest value of the vertical coordinate zmax=87±4 pc and the wavelength λ=2.8±0.1 kpc, the vertical velocity perturbation amplitude reaches Wmax=5.1±0.7 km s1 and the wavelength found from vertical velocities is λ=3.9±1.6 kpc. The Radcliffe wave also manifests itself in the positions of very young stars that have not reached the main sequence stage. We extracted a sample of such stars from the Gaia DR2×AllWISE database and obtained the following estimates from them: zmax=118±3 pc and wavelength λ=2.0±0.1 kpc.


Comment: 11 pages, 5 figures, accepted in Astron. Lett

Subject: Astrophysics - Astrophysics of Galaxies