O stars
O stars
Alternative terms
- UF↸ Class O stars
- UF↸ O-type main sequence stars
- UF↸ O-type stars
Broader Terms
- BT↑ Early-type stars
More specific terms
- NT4 ↓ O dwarfs
- NT4 ↓ O giant stars
- NT4 ↓ O subdwarfs
- NT4 ↓ O supergiants
- NT4 ↓ Oe stars
- NT4 ↓ Oef stars
- NT4 ↓ Of stars
