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. These stars have often been little-studied, and once more is learnt about them, they are reclassified into other categories such as semiregular variables.
Most of irregular variables are cool stars of late spectral types K and M, S stars or carbon stars. They are divided into LB:s, which are generally giants, and LC:s—supergiants exhibiting a light variation interval of about 1 magnitude.[1]
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This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries.[2]
| Designation (name) | Constellation | Discovery | Apparent magnitude (Maximum)[3] | Apparent magnitude (Minimum)[3] | Range of magnitude | Spectral type | Subtype | Comment |
|---|---|---|---|---|---|---|---|---|
| U Antliae | Antlia | 8m.1 (p) | 9m.7 (p) | 1.6 | N:v | LB | ||
| Beta Pegasi | Pegasus | Schmidt, 1847 | 2m.31 | 2m.74 | 0.43 | M2.3 II-III | LB | |
| Epsilon Pegasi (Enif) | Pegasus | 0m.7 | 3m.5 | 2.8 | K2 Ib | LC | ||
| TX Piscium | Pisces | 4m.79 | 5m.20 | 0.42 | C5III | LB | ||
| Alpha Scorpii (Antares) | Scorpius | 0m.88 | 1m.16 | 0.28 | M1.5Iab-b | LC | ||
| Alpha Tauri (Aldebaran) | Taurus | 0m.75 | 0m.95 | 0.20 | K5III | LB | ||
| Mu Geminorum | Gemini | 2m.75 | 3m.02 | 0.28 | M3III | LB | ||
| BE Camelopardalis | Camelopardalis | 4m.35 | 4m.48 | 0.13 | M2II | LC | ||
| Tau4 Eridani | Eridanus | 3m.57 | 3m.72 | 0.15 | M3III | LB | ||
| 13 Boötis | Bootes | 5m.29 | 5m.38 | 0.09 | M2IIIab | LB | ||
| Psi Virginis | Virgo | 4m.73 | 4m.96 | 0.23 | M3III | LB | ||
| V854 Arae | Ara | 5m.84 | 5m.99 | 0.12 | M1.5III | LB | ||
| 62 Sagittarii | Sagittarius | 4m.45 | 4m.62 | 0.17 | M4III | LB | ||
| TX Piscium | Pisces | 4m.79 | 5m.20 | 0.41 | C5III | LB | ||
| CQ Camelopardalis | Camelopardalis | 5m.15 | 5m.27 | 0.12 | M0II | LC | ||
| Pi Aurigae | Auriga | 4m.24 | 4m.34 | 0.10 | M3.5II | LC | ||
| NO Aurigae | Auriga | 6m.06 | 6m.44 | 0.58 | M2Iab | LC | ||
| Omicron1 Canis Majoris | Canis Major | 3m.78 | 3m.99 | 0.21 | M2.5Iab | LC | ||
| Sigma Canis Majoris | Canis Major | 3m.43 | 3m.51 | 0.08 | M1.5Iab | LC | ||
| NS Puppis | Puppis | 4m.4 | 4m.5 | 0.1 | K3Ib | LC | ||
| Lambda Velorum | Vela | 2m.14 | 2m.30 | 0.16 | K4Ib-IIa | LC | ||
| V337 Carinae | Carina | 3m.36 | 3m.44 | 0.08 | K3II | LC | ||
| GZ Velorum | Vela | 3m.43 | 3m.81 | 0.38 | K3II | LC | ||
| RX Telescopii | Telescopium | 6m.6 | 7m.4 | 0.8 | M3Iab | LC |
References
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| Pulsating |
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| Eruptive |
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| Cataclysmic | |||||||||
| Rotating |
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| Eclipsing | |||||||||
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This variable star–related article is a stub. You can help Wikipedia by expanding it. |
- ↑ GCVS Variability Types
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 (visual magnitude, unless marked (B) (= blue) or (p) (= photographic))
