We examine Herschel Space Observatory images of one nearby prototypical outer ring galaxy , NGC 1291 , and show that the ring becomes more prominent at wavelengths longer than 160 \micron .
The mass of cool dust in the ring dominates the total dust mass of the galaxy , accounting for at least 70 % of it .
The temperature of the emitting dust in the ring ( T = 19.5 \pm 0.3 K ) is cooler than that of the inner galaxy ( T = 25.7 \pm 0.7 K ) .
We discuss several explanations for the difference in dust temperature , including age and density differences in the stellar populations of the ring versus the bulge .