International Gemini Observatory/NOIRLab/NSF/AURA
The radial velocities of the Balmer lines in WD 0931+444
The radial velocities of the Balmer lines in WD 0931+444. The bottom panel shows all of these data points phased with the best-fit period. The dotted line represents the best-fit model for a circular orbit with a period of 19.8 minutes.
