Spectroscopic fit of J183702.03–674141.1. Top: χ² as a function of T_eff and log g. The blue dot indicates the absolute minimum. The red error bar shows the median (marked by a cross) and 68% confidence interval. Bottom: Observed spectrum (light grey), the extinction-corrected spectrum (darker grey), the model for minimum χ² (blue), and the adopted solution (red). Note that this object has atmospheric metals that are not included in the model.