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Local kinematics of dwarfs from the Tycho-2 data

Rybka, S. P.

The stellar velocity field of about 70000 dwarfs within 2 kps from the Sun is investigated from the "Tycho-2" data and known MK spectral classification. The Ogorodnikov-Milne model of a three-dimensional differential velocity field is used. The generalized Oort constants and components of the solar motion with respect to various spectral groups ar…

Compiled catalogue of stellar proper motions in the Hipparcos system in MEGA program areas

Kharchenko, N. V.

The compiled catalogue of proper motions in the Hipparcos system MEGA-H is created for 18169 stars. The data of the original catalogue (MEGA-G) and All-Sky Compiled Catalogue of 2.5 million stars (ASCC-2.5) are used. The errors of magnitude equation and zero-point are taken into account in each 47 program areas individually.