Paper:	Empirical Mass-Loss Rates across the Upper Hertzsprung-Russell Diagram
Volume:	425, Hot and Cool: Bridging Gaps in Massive Star Evolution
Page:	171
Authors:	Leitherer, C.
Abstract:	I provide an overview of the empirical mass-loss rates of hot and cool luminous stars. Stellar species included in this talk are luminous OB stars, Wolf-Rayet stars, asymptotic giant branch stars, and red supergiants. I discuss the scaling of mass loss with stellar properties, with special emphasis on the influences of chemical abundances. Observational errors and systematic uncertainties are still substantial and vary with stellar type. These uncertainties are a major impediment for the construction of reliable stellar evolution models.

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