High order momenta of the local stellar velocity distribution

Details High order momenta of the local stellar velocity distribution High order momenta of the local stellar velocity distribution

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...110...95n&link_type=abstract

Astronomy and Astrophysics, vol. 110, no. 1, June 1982, p. 95-99.

Astronomy and Astrophysics

Astrophysics

7

Galactic Structure, Momentum, Stellar Motions, Velocity Distribution, Milky Way Galaxy, Statistical Analysis, Velocity Errors

Scientific paper

Central momenta up to the fourth order and their variances for different samples of the 'Catalogue of Nearby Stars' (Gliese, 1969) and for the selection of '512 FK 4/FK 4 Suppl. Distant Stars' (Fricke, 1977) have been calculated. The method employed is quite different from the one used by Erickson (1975), and his results are confirmed. Differences between the results and the values in Gliese and Fricke are interpreted through the kinematic-age relation. Wide deviations from the normal law are found for the residual velocity distribution of nearby stars, and important variations in the vertex deviation arise for different samples.

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