Polarization and Variability of Brown Dwarfs
L-type brown dwarfs (Teff = 1400-2100K) are known for their dusty photospheres. Brown dwarfs may have asymmetric surfaces arising from rotationally-induced flattening or large-scale cloud cover and patchiness. This broken symmetry may prevent polarization by dust-scattering to to cancel out, resulting in a non-zero polarization. Therefore, studying
Knight, Cynthia et al.
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2010