The kinematics of Mira variables in the windows towards the Galactic Centre

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Galactic Nuclei, Milky Way Galaxy, Mira Variables, Radial Velocity, Stellar Motions, Variable Stars, Emission Spectra, Hydroxyl Emission, Infrared Stars, Kinematics, Tables (Data)

Scientific paper

Radial velocities are given for 23 Mira variables in the Galactic Center window fields of Baade (Sgr I and the NGC 6522 field). The data are combined with velocities determined from other objects to obtain the velocity of the local standard of rest with respect to objects near the center. This velocity is not found to differ significantly from zero and thus there is no evidence for a high outward velocity of the local standard of rest. The velocity dispersion of the Miras is 112 km/s. OH/IR sources near the center have a similar dispersion (Baud) although the space distribution around the center of these two classes of objects seems different.

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