Full X-shooter spectrum (black, with errorbars) with areas heavily affected by telluric emission lines shown in gray. Overplotted are the best-matching MARCS model atmosphere (solid red line), a 1100 K blackbody to account for excess red emission (red dotted line) and a power law with α ≈ 4 to account for excess blue emission (red dashed line, although the shape of this component is not well constrained and can also be fit with a blackbody with T ≳ 20,000), as well as the sum of those three models (blue line). The large majority of positive outliers shown in black are emission lines, not noise.