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The mass-loss rate from Mira variables represents a key parameter in ourunderstanding of their evolutionary tracks. We introduce a method fordetermining the mass-loss rate from the Mira component in D-type symbioticbinaries via the Raman scattering of atomic hydrogen in the wind from thegiant. Using our method, we investigated Raman HeII 1025\AA\ --> 6545\AA\conversion in the spectrum of the symbiotic Mira V1016 Cyg. We determined itsefficiency to be 0.102 and 0.148, and the corresponding mass-loss rate 2.0(+0.1/-0.2) x 1E-6 and 2.7 (+0.2/-0.1) x 1E-6 M(Sun)/year, using our spectrafrom 2006 April and 2007 July,respectively. Our values of the mass-loss ratethat we derived from Raman scattering are comparable with those obtainedindependently by other methods. Applying the method to other Mira-white dwarfbinary systems can provide a necessary constraint in the calculation ofasymptotic giant branch evolution.

Mass-loss rate by the Mira in the symbiotic binary V1016 Cygni from Raman scattering