Slow irregular variable
A slow irregular variable (ascribed the GCVS types L, LB and LC) is a variable star that exhibit no or very poorly defined periodicity in their slowly changing light emissions. Most of them are late spectral types K and M, S stars or carbon stars. The LB:s are generally giants, while the LC:s are supergiants exhibiting a light variation interval of about 1 magnitude.
- L-type: V0341 Carinae, OX Geminorum
- LB-type: Aldebaran (Alpha Tauri), Beta Pegasi, V0569 Puppis (of the clearly naked-eye magnitude 1.85 to 2.74)
- LC-type: Antares (Alpha Scorpii), Epsilon Pegasi, Beta Gruis
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