Zequn Li edited abstract.tex  almost 8 years ago

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We explore the impact of metal content on clumping in the winds of massive stars. Using numerical hydrodynamics with radiative cooling, limb darkening, and base perturbations, we simulate a wind with a fixed stellar mass and luminosity and vary the wind strength $\bar{Q}$, which varies directly with metal content. Analysis of the radial distribution of clumping in these simulations shows that the clumping factor varies with metallicity as $f_{cl} \simeq Z^{0.3}$, implying that observationally determined H alpha mass loss diagnostics that assume metallicity-independent clumping have overestimated by 20-30\% the exponent of the mass loss rate to metallicity power law exponent. relationship.