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C. D. Garmany and P. Massey
© 1981. The Astronomical Society of the Pacific. All rights reserved. Printed in U.S.A.
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Citation C. D. Garmany and P. Massey 1981 PASP 93 500
DOI 10.1086/130866
130 Total downloads
An orbital solution for the single-line binary HD 15558, an O5f 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.
