The extremely low mass companion to Gliese 623

Details The extremely low mass companion to Gliese 623 The extremely low mass companion to Gliese 623

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...341..961m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 341, June 15, 1989, p. 961-967.

Astronomy and Astrophysics

Astrophysics

33

Binary Stars, Companion Stars, Late Stars, Radial Velocity, Stellar Orbits, Dwarf Stars, Orbital Elements, Stellar Mass

Scientific paper

Precise radial velocity measurements for Gliese 623 reveal pronounced velocity variations with an amplitude of 1.9 km/s and a period of 3.7 yr. The companion is shown to have a mass in the 0.067-0.087-solar-mass range, as low as any stellar mass found to date. Kepler's third law is used to deduce masses of 0.50 and 0.11 solar masses for the two components which are much higher than those inferrred photometrically for either component.

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