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Abstract: An analysis of the residual-velocity field of OB associations within 3 kpc ofthe Sun has revealed periodic variations in the radial residual velocitiesalong the Galactic radius vector with a typical scale length oflambda=2.0+-0.2 kpc and a mean amplitude of fR=7+-1 km-s. The fact thatthe radial residual velocities of almost all OB-associations in richstellar-gas complexes are directed toward the Galactic center suggests that thesolar neighborhood under consideration is within the corotation radius. Theazimuthal-velocity field exhibits a distinct periodic pattern in the region0


Autor: A. M. Mel'nik, A. K. Dambis, A. S. Rastorguev

Fuente: https://arxiv.org/



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