What is the correct pinyin and pronunciation for 太阳? most dictionaries put it as: tai4 yang2. though i noticed cc-cedict uses tai4 yang5. and there is a discussion in the change log around colloquial and correct pronunciation. they reference another discussion at http://zhidao.baidu.com/question/73007286.html which also talks about this. though the references here aren't what i'd call necessarily respected.
so wondering what peoples thoughts are here? in additon are there any respected sources for one way vs another for what is the correct pinyin and pronunciation? i'm talking "普通话"。