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Y

A Class Y star is the dimmest type of star, classed as a sub-brown dwarf that may not be large enough to undergo deuterium fusion[1]. A typical Class Y star has a temperature of around -63 - 800 F, a mass of around 5-13 times that of Jupiter, and a similar radius to Jupiter.[2] They are often classified as large rogue planets.

Examples

  • WISE 0855−0714, the coldest known brown dwarf[3][4]
  • These are the 7 Y-type stars discovered by J. Davy Kirkpatrick et al. in 2012:[5]
    • WISE 0146+4234
    • WISE 0350−5658
    • WISE 0359−5401
    • WISE 0535−7500
    • WISE 0713−2917
    • WISE 0734−7157
    • WISE 2220−3628

See also

Stellar Classes
Φ · Ψ · Ω · Q · DE · GR · σ ς · Θ · N · D · BS · Y · T · L · M · C · S · QS · K · G · F · A · B · LBV · β · O · W · N · X · n0 · Exotic (Π · Σ · Γ · Δ · μ) · δ · I · TŻO · BL · ℃ · ⩡
Brown Dwarf Classes
Y · T · L

References

  1. ↑ Various; Brown dwarf - Wikipedia, the free encyclopedia
  2. ↑ Various; Stellar classification - Wikipedia, the free encylopedia
  3. ↑ Various; WISE 0855−0714 - Wikipedia, the free encyclopedia
  4. ↑ Simbad database; WISEA J085510.74-071442.5
  5. ↑ Kirkpatrick, J. D., Gelino, C. D., Cushing, M. C. et al.; Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function

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