Astrophysics (Index)About

L-type star

(L)
(spectral type of star cooler than an M-type star)

An L-type star (L) is within the L-class, a spectral class indicating stars with reduced titanium monoxide lines (which distinguish M-type stars), with metal hydride and alkali metal absorption lines, and a surface temperature in the range of 1300-2000 K. The spectral energy distribution (SED) peaks in the mid-infrared/near-infrared range. This encompasses some brown dwarfs and red dwarfs (L dwarfs) and potentially some cool giant stars, and spectrally might describe some hot extra-solar planets.


(star type,spectral class,brown dwarfs,red dwarfs)
Further reading:
https://en.wikipedia.org/wiki/Stellar_classification#Class_L
https://en.wikipedia.org/wiki/Brown_dwarf#Spectral_class_L
https://courses.lumenlearning.com/astronomy/chapter/the-spectra-of-stars-and-brown-dwarfs/
https://www.stsci.edu/~inr/ldwarf1.html
http://www.johnstonsarchive.net/astro/browndwarflist.html
https://lweb.cfa.harvard.edu/~pberlind/atlas/htmls/lstars.html

Referenced by pages:
brown dwarf (BD)
G239-25
Luhman 16
spectral class
TW Hydrae association (TWA)
ultracool dwarf

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