Daga 0.3 zuwa 1.2 solar masses, yankin da ke kewaye da tauraron tauraron shine yankin radiation, wanda aka raba shi daga yankin da ke sama da tachocline. Radius na yankin radiation yana ƙaruwa tare da taro, tare da taurari a kusa da 1.2 solar masses kusan kusan radiation. Sama da 1.2 solar masses, yankin na tsakiya ya zama yanki na convection kuma yankin na radiation, tare da yawan taro na tauraron yana ƙaruwa.
girman tauraron.