A farkon tsari, gas ɗin da ke ƙullawa da sauri yana haskaka yawancin makamashi, yana ba da damar ci gaba da rushewa. Daga ƙarshe, yankin tsakiya ya zama mai yawa don kama radiation. Sakamakon haka, yawan zafin jiki na tsakiya da yawa na girgije da ya rushe yana ƙaruwa sosai tare da lokaci, yana rage raguwa, har sai yanayin ya yi zafi da yawa don halayen thermonuclear su faru a cikin zuciyar protostar. Ga yawancin taurari, gas da matsin lamba da aka samar ta hanyar halayen haɗakar thermonuclear a cikin zuciyar tauraron zai tallafawa duk wani raguwa na nauyi.
yankin tsakiya ya zama mai yawa don kama radiation