DOI: https://doi.org/10.18524/1810-4215.1994.7.105734

ESTIMATING SPATIAL DENSITY OF CLOSE BINARY SYSTEMS WITH SUB GIANT SECONDARIES IN SOLAR NEIGHBORHOOD

O. V. Eretnova

Анотація


The spatial density of close binary systems with subgiant secondaries in solar neighborhood are evaluated taking into account the effects of observational selection. It was found to be about 0.00018 pc- 3 or about 0.00035 M pc-3.

Ключові слова


Close binary systems; Effects of observational selection; Spatial density.

Повний текст:

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Посилання


Allen K.U.: 1977, Astrophysical magnitudes., (Russian Transl.), Moscow, Mir, 446pp.

Eretnova O.V., Svechnikov M.A.: 1991, Astronomo-geodez. issled., Sverdlovsk, 87.

Eretnova O.V., Svechnikov M.A.: 1993, Astronomo-geodez. issled., Sverdlovsk, (in press).

Svechnikov M.A., Kuznetsova E.F.: 1990, A catalogue of approximate photometric and absolute elements of eclipsing variable stars. Sverdlovsk. Ural State University, V.I., 224pp.; v.2, 232pp.

Svechnikov M.A., Kuznetsova E.F.: 1992, Astronomo-geodez. issled., Sverdlovsk, 81.




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