HD 15558 : an extremely luminous O-type binary star.
Abstract
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.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- August 1981
- DOI:
- 10.1086/130866
- Bibcode:
- 1981PASP...93..500G
- Keywords:
-
- 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;
- Astrophysics