Astrophysics (Index)About

ultracool dwarf

(ultra-cool dwarf)
(star or brown dwarf cooler than M7 class)

The term ultracool dwarf is used for M⁠7 or later (cooler) stars, such as L-type star, T-type star, Y-type star, and/or brown dwarfs. An example is TRAPPIST-1. The term was coined for the convenience of studies relating to this combination of classes.


(star type)
Further reading:
http://en.wikipedia.org/wiki/Ultra-cool_dwarf
https://ui.adsabs.harvard.edu/abs/2013A%26A...556A.133S/abstract

Referenced by pages:
SPECULOOS
Two Micron All-sky Survey (2MASS)

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