The diagram above shows the response curves of the ugriz photometric pass-bands with 1.3 airmass correction applied, taken from the SDSS website2, compared to the MWD spectrum of two different effective temperatures and same magnetic field geometry which for this case is the 12.61 MG offset dipole model of SDSS J0855+1640. The fluxes are arbitrarily scaled, but consistent relative to each other. The effective temperatures are 20 000 K (top) and 15 000 K (bottom). The u, g and r bands cover the wavelengths which are effected by the magnetism in the MWD spectra for field strengths smaller than 50 MG. However this effect is minor for the r band.
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