HD 15558 - an extremely luminous O-type binary star

Details HD 15558 - an extremely luminous O-type binary star HD 15558 - an extremely luminous O-type binary star

Aug 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981pasp...93..500g&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 93, Aug.-Sept. 1981, p. 500-503.

Astronomy and Astrophysics

Astronomy

20

Binary Stars, O Stars, Orbital Mechanics, Stellar Luminosity, Stellar Motions, F Stars, Hertzsprung-Russell Diagram, Orbital Elements, Radial Velocity, Stellar Evolution, Stellar Mass, Stellar Mass Ejection, Stellar Spectrophotometry

Scientific paper

An orbital solution for the single-line binary HD 15558, an O5(f) star in the association IC 1805, is presented. The period is 440d, the longest of any O-type spectroscopic binary, and e = 0.54. This star is one of the most luminous stars in the Galaxy and in the theoretical H-R diagram it lies near the track corresponding to stars with initial masses of 100 solar masses.

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