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The white light during M dwarf flares has long been known to exhibit thebroadband shape of a T~10,000 K blackbody, and the white light in solar flaresis thought to arise primarily from Hydrogen recombination. Yet, a current lackof broad wavelength coverage solar-flare spectra in the optical/near-UVprohibits a direct comparison of the continuum properties to determine if theyare indeed so different. New spectroscopic observations of a secondary flareduring the decay of a megaflare on the dM4.5e star YZ CMi have revealedmultiple components in the white-light continuum of stellar flares, includingboth a blackbody-like spectrum and a hydrogen recombination spectrum. One ofthe most surprising findings is that these two components are anti-correlatedin their temporal evolution. We combine initial phenomenological modeling ofthe continuum components with spectra from radiative-hydrodynamic models toshow that continuum veiling gives rise to the measured anti-correlation. Thismodeling allows us to use the components' inferred properties to predict how asimilar spatially resolved, multiple-component white-light continuum mightappear using analogies to several solar flare phenomena. We also compare theproperties of the optical stellar flare white light to Ellerman bombs on theSun.

The Multiple Continuum Components in the White Light Flare of 16 January 2009 on the dM4.5e Star YZ CMi