The red-dwarf binary Sigma2398

Details The red-dwarf binary Sigma2398 The red-dwarf binary Sigma2398

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pasp...99.1084h&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 99, Oct. 1987, p. 1084-1088.

Astronomy and Astrophysics

Astronomy

14

Astronomical Photography, Binary Stars, Red Dwarf Stars, Stellar Mass, Astronomical Spectroscopy, Stellar Orbits

Scientific paper

The plate collection of the Swarthmore refractor for the 1918-1987 period is examined in order to study the orbital elements of the red-dwarf binary Sigma2398. The results are used to obtain a parallax of 0.289 + or - 0.001 arcsec. Component masses of 0.36 and 0.30 solar masses are found based on the revised orbit of P = 408 yr, with a = 13.88 arcsec. The results provide no evidence of periodic effects indicative of the existence of a third body.

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