The distribution of stellar population in the vicinity of the sun according to velocity variance

Details The distribution of stellar population in the vicinity of the sun according to velocity variance The distribution of stellar population in the vicinity of the sun according to velocity variance

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983velen...2...67k&link_type=abstract

Leningradskii Universitet, Vestnik, Matematika, Mekhanika, Astronomiia (ISSN 0024-0850), vol. 2, April 1983, p. 67-72. In Russia

Statistics

Milky Way Galaxy, Solar System, Star Distribution, Galactic Rotation, Integral Equations, Laplace Transformation, Normal Density Functions, Variance (Statistics), Velocity Distribution

Scientific paper

The velocity distribution of stars in the Galaxy (according to the catalog of Woolley et al., 1970) is represented by a superposition of normal distributions and variances. By using the Stromberg formula, the corresponding integral equation is reduced to a Laplace transform. The distribution thus obtained is unimodal and asymmetric, indicating predominance of stellar population I with an admixture (up to 40 percent) of stellar population II. It is noted that this result does not necessarily apply to a larger galactic region, where a larger stellar population II should be expected.

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