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Galactic masers: Kinematics, spiral structure and the disk dynamic state

Dambis, A. K.; Bobylev, V. V.; Bajkova, A. T. +3 more

We applied the currently most comprehensive version of the statistical-parallax technique to derive the kinematical parameters of the maser sample with 136 sources. Our kinematic model comprises the overall rotation of the Galactic disk and the spiral density-wave effects, and the variation of radial velocity dispersion with Galactocentric distanc…