97.20.-w Normal stars (by class): general or individual ( 0 Dok. )

• 97.20.Ec Main-sequence: early-type stars (O and B) ( 0 Dok. )
• 97.20.Ge Main-sequence: intermediate-type stars (A and F) ( 0 Dok. )
• 97.20.Jg Main-sequence: late-type stars (G, K, and M) ( 0 Dok. )
• 97.20.Li Giant and subgiant stars ( 0 Dok. )
• 97.20.Pm Supergiant stars ( 0 Dok. )
• 97.20.Rp Faint blue stars (including blue stragglers), white dwarfs, degenerate stars, nuclei of planetary nebulae (for planetary nebulae, see 98.38.L or 98.58.L) ( 0 Dok. )
• 97.20.Tr Population II stars (horizontal branch, metal poor, etc.) ( 0 Dok. )
• 97.20.Vs Low luminosity stars, subdwarfs, and brown dwarfs ( 0 Dok. )
• 97.20.Wt Population III stars ( 0 Dok. )