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The Galaxy Kinematics from the Cepheids with the Proper Motions from the GAIA DR1 Catalog
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TLDR
In this paper, a sample of classic Cepheids with known distances and line-of-sight velocities is supplemented by the proper motions from the Gaia DR1 catalog.Abstract:
The sample of classic Cepheids with known distances and line-of-sight velocities is supplemented by the proper motions from the Gaia DR1 catalog. From spatial velocities of 260 stars the components of the peculiar Solar velocity:
(U,V,W)_\odot=(7.90,11.73,7.39)+/-(0.65,0.77,0.62) km/s, parameters of the Galactic rotation curve: \Omega_0 =28.840+/-.33 km/s/kpc, \Omega'_0=-4.05+/-0.10 km/s/kpc^2, \Omega''_0=0.805+/-0.067 km/s/kpc^3 are obtained. For the adopted Galactocentric Solar distance R_0=8 kpc the linear circular velocity of the Local Standard of Rest is found as V_0=231+/-6 km/s.read more
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Galactic masers: Kinematics, spiral structure and the disk dynamic state
Alexey S. Rastorguev,N. D. Utkin,M. V. Zabolotskikh,A. K. Dambis,A. T. Bajkova,V. V. Bobylev +5 more
TL;DR: In this paper, the authors applied the statistical-parallax technique to derive the kinematical parameters of the maser sample with 136 sources, including the overall rotation of the Galactic disk and the spiral density-wave effects, and the variation of radial velocity dispersion with Galactocentric distance.
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Journal ArticleDOI
Galactic masers: kinematics, spiral structure and the disk dynamic state
Alexey S. Rastorguev,N. D. Utkin,M. V. Zabolotskikh,A. K. Dambis,A. T. Bajkova,V. V. Bobylev +5 more
TL;DR: In this paper, the authors applied the statistical-parallax technique to derive kinematical parameters of the maser sample with 136 sources, which comprises the overall rotation of the Galactic disk and the spiral density wave effects.