Harvard classification
/ˈhɑːvəd/noun
- Astronomy a system of classification of stars based on their spectral types, the chief classes (O, B, A, F, G, K, M) forming a series from very hot bluish-white stars to cool dull red stars【天文】哈佛分类。
词源
1960s: named after the observatory at Harvard University, where it was devised.