Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87..122p&link_type=abstract
Astronomical Journal, vol. 87, Jan. 1982, p. 122-130.
Astronomy and Astrophysics
Astronomy
7
Dwarf Stars, M Stars, Northern Sky, Space Density, Stellar Motions, Stellar Spectrophotometry, Astronomical Catalogs, Electrophotometry, Frequency Distribution, Radial Velocity, Stellar Magnitude
Scientific paper
Johnson-Morgan V and B-V, and Kron-Mayall V-I photoelectric observations are presented for a majority of the probable dwarf M stars found by Sanduleak (1967) in the direction of the north galactic pole. Visual absolute magnitudes are determined by the M(v) vs V-I relationship, and the distances thereby derived are used to determine space densities and tangential motions. The kinematic properties and space densities obtained are in agreement with determinations based on nearby stars and stars of the McCormick survey. The space densities are found to be compatible with those determined by Luyten (1976) from proper-motion surveys.
Dahn Conard C.
Pesch Peter
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