Abstract
ABSTRACT New photometric (uvbyβ) observations of the intrinsic variable star V798 Cyg have been secured and used to derive values of foreground reddening, E(b - y) = 0\\fm117, and metallicity, [Fe/H] = 0.64. Intrinsic (b - y) and c1 values indicate a mean effective temperature, < Teff > = 7150 K, and a mean surface gravity, < log g > = 3.39. Pulsation theory and theoretical evolutionary tracks yield a mass of 2.3M⊙ and an age of 0.63 Gyrs. Although V798 Cyg has been described as being multi-periodic, this conclusion is not confirmed by our observations. V798 Cyg in most respects resembles a typical population I dwarf Cepheid.
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