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Paper: The mass of the O6Iaf star HD 153919
Volume: 7, Properties of Hot Luminous Stars: Boulder-Munich Workshop
Page: 297
Authors: Heap, S. R.; Corcoran, M. F.
Abstract: The mass of the O component in the massive X-ray Binary 4U 1700-37 is reexamined, using the modern theory of stellar winds and applying it to X-ray light curves for the system and to UV wind line profiles. It is found that the mass of the O star is about 50 solar masses, in accord with the masses of other stars of similar spectral type. Thus, the problematic nature of the undermassive massive X-ray binaries appears to be resolved in favor of higher masses.
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