Left panel: total SFR vs [C II] luminosity from the empirical relations of De Looze et al. (2014). The red circle corresponds to the total SFR and L([C II]) of AzTEC-3. Middle panel: theoretical value of L(Lyα)/L([C II]) versus total SFR obtained assuming that SFR(Lyα) is equal to the total SFR and SFR(Lyα) is calculated with the calibration from Kennicutt (1998). This calculation is intended to give an idea of the theoretical value of L(Lyα)/L([C II]) at the location where the [C II] emission is concentrated. The vertical yellow line correspond to the total SFR of AzTEC-3 for all the possible values of L(Lyα)/L([C II]). Right panel: observed L(Lyα)/L([C II]) versus rest-frame Lyα equivalent width as shown in Harikane et al. (2018). The average relation for all the galaxies in that work is shown as a red dashed line. The gray symbols are their data points for the sources with a Lyα detection, excluding the upper limits. The red and black symbols correspond to AzTEC-3 (red circle), LBG-3 (black facedown triangle), and LBG-1 (black square).