HD 190918: Arbiter between models for Wolf-Rayet stars |
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| Authors: | Anne B Underhill Grant M Hill |
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| Institution: | (1) Department of Geophysics and Astronomy, University of British Columbia, V6T 1Z4 Vancouver, B.C., Canada;(2) Department of Astronomy, University of Western Ontario, N6A 3K7 London, Ont., Canada |
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| Abstract: | New orbital elements for the 112.4 day WN4.5+O9.5Ia spectroscopic binary HD 190918 are presented. Solutions consistent with the O star being a main sequence star or a supergiant are obtained wheni=25° or 20°, respectively. We predict the X-ray flux to be expected from this system and note how an observation of the X-ray flux from HD 190918 would help one to choose the most probable value of the inclination. |
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