The low-mass companion to Wolf 922

Details The low-mass companion to Wolf 922 The low-mass companion to Wolf 922

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....93.1245m&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 93, May 1987, p. 1245-1250. Research supported by the Estate of Leander J. McCormick

Astronomy and Astrophysics

Astronomy

6

Companion Stars, Red Dwarf Stars, Stellar Magnitude, Stellar Parallax, Main Sequence Stars, Periodic Variations, Perturbation Theory, Stellar Luminosity, Stellar Mass

Scientific paper

An astrometric analysis of the Wolf 922 system from plates obtained with the 67 cm refractor of the McCormick Observatory confirms the low-amplitude perturbation with a period of 1.92±0.02 yr. The relative parallax is found to be 0arcsec.1201±0arcsec.0028; and the authors estimate visual absolute magnitudes of 12.5 and 15.3 for the two stars. With an adopted primary mass of 0.23 M_sun;, the mass of the companion is 0.12 M_sun;, placing Wolf 922 B among the stars of lowest known mass.

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