Faint stars and Oort's constants

Details Faint stars and Oort's constants Faint stars and Oort's constants

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.244..247l&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 244, May 15, 1990, p. 247-253.

Statistics

Computation

5

Computational Astrophysics, Faint Objects, Stellar Magnitude, Kinematics, Stellar Motions, Stellar Parallax, Stellar Rotation

Scientific paper

The effect of using proper motions of stars with B(mag) = 16 on the measured values of Oort's constants is studied. A simple kinematic model with assumed values of Oort's constants is convolved with models of predicted star counts for regions covering most of the north galactic hemisphere. The resulting simulated proper motions are used to recalculate Oort's constants and these are compared to the input values for self-consistency. It is found that deducing A and B from faint star proper motions may lead to systematically biased results.

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