Star, Type-O
Type-O Star (STSC)
Dark blue star. Temperatures ranged from 28,000 to 50,000°K. O-Type stars were composed of ionized atoms, especially helium.
Each spectral class (O, B, A, F, G, K, M) was divided into 10 subclasses, ranging from 0 (hottest) to 9 (coolest). Stars were also divided into six categories according to luminosity: Ia (most luminous supergiants), Ib (less luminous supergiants), II (luminous giants), III (normal giants), IV (subgiants), and V (main sequence and dwarfs). For instance, Sol was classified as G2V, which meant that it was a relatively hot G-Type main sequence star. In addtion, classes R, N, S, T, Q, and W were used for relatively rare star types not found on the main sequence.[1]
O-Type stars
- Mintaka: O1-3III
References
- 1. “Star Trek: Star Charts.” Star Trek (Uncategorized). Book. October 2002.
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