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Fig. 9

image

Mass-loss relations for LMC metallicity. Mass-loss rates for H-free WN stars in the LMC as a function of luminosity. Black stars indicate empirical mass-loss rates from (Hainich et al. 2014). The blue curves indicate mass-loss rates obtained from our models with Z = 0.008 for ν/ νesc = 1.3 (top) and ν = 1600 km s-1 (bottom), the labels indicate stellar masses in M. The dotted/dashed lines indicate the empirical mass-loss prescriptions for H-free WN stars from Nugis & Lamers (2000) scaled with the metallicity dependence from Vink & de Koter (2005), and from Yoon (2017), respectively. Notably, our models do not predict solutions below ~25M, which contradicts the observed range of luminosities for H-free WN stars in the LMC.

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