Source: http://space-scitechjournal.org.ua/en/archive/2015/6/7
Timestamp: 2019-04-19 19:04:58+00:00

Document:
The kinematic analysis of proper motions of stars of the XPM2, PPMXL and UCAC4 catalogues, which was performed based on the linear Ogorodnikov-Milne model is present. It is shown that in the bright end of the whole magnitude interval the kinematic parameters of the Galaxy are in agreement with values accepted by the IAU. It is found that the Oort constant B is practically independent from the magnitude and its mean value is about 10.5 km· s−1kpc−1. At the same time, the Oort constant A depends on the magnitude and its values vary from 14.22 to 5 km· s−1kpc−1. One possible reason for this observed effect could be the presence of the magnitude equation in proper motions of stars of the used catalogues.
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