Resolving the dynamical mass tension of the massive binary 9 Sagittarii
M. Fabry,
C. Hawcroft,
A. J. Frost
et al.
Abstract:Context. Direct dynamical mass measurements of stars with masses above 30 M are rare. This is the result of the low yield of the upper initial mass function and the limited number of such systems in eclipsing binaries. Long-period, double-lined spectroscopic binaries that are also resolved astrometrically offer an alternative to eclipsing binaries for obtaining absolute masses of stellar objects. 9 Sgr (HD 164794) is one such long-period, high-mass binary. Unfortunately, a large amount of tension exists betwee… Show more
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