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Dynamical study of the wide visual binary ADS 12815 (16 Cyg)
Kiselev, A. A.; Romanenko, L. G.
A homogeneous series of photographic position measurments of the visual binary ADS 12815 obtained on the 26-inch refractor of the Pulkovo Observatory (1960-2007) is analyzed. The Pulkovo observations allow for the existence of the planet around component B discovered by Cochran et al. based on radial-velocity measurements. The orbit of the planet …
The inverse problem of the theory of degenerate dwarfs
Vavrukh, M. V.; Smerechynskyi, S. V.; Tyshko, N. L.
Based on the radii and masses of degenerate dwarfs derived from HIPPARCOS and other observations, we estimate the microscopic parameters of a Chandrasekhar model (the relativistic parameter at the stellar center x 0, and the chemical-composition parameter µ e = A/Z, where A is the mass number and Z is the nuclear charge). We…