Star density curves and the mass density in the neighborhood of the sun

Details Star density curves and the mass density in the neighborhood of the sun Star density curves and the mass density in the neighborhood of the sun

Aug 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....59..329w&link_type=abstract

Astronomy and Astrophysics, vol. 59, no. 3, Aug. 1977, p. 329-335.

Astronomy and Astrophysics

Astrophysics

5

A Stars, Mass Distribution, Perturbation Theory, Space Density, Star Distribution, Potential Theory, Steady State, Stellar Mass, Sun

Scientific paper

Camm's (1950) isothermal solution to a one-dimensional steady-state problem for the local variation in potential and mass density in the direction perpendicular to the galactic plane is examined along with velocity data for A-type stars and theoretical estimates of a certain 'length parameter'. The mass density and potential in the solar neighborhood are investigated by perturbing the equations that Camm solved in unperturbed form. Formulas for the perturbed potential and the logarithm of relative density in the solar neighborhood are obtained and then solved numerically for A0 and A stars. The mass density in the solar neighborhood is estimated to be 0.102 solar mass/cu pc from the A0 data and 0.107 solar mass/cu pc from the A data.

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