Left: A mass model where the stellar component is composed of an exponential disk (blue dashed line) and a De Vaucouleurs bulge (red dash-dotted line). The black dots with error bars show the observed circular velocities, while the black line shows the best-fit mass model. This model gives a total stellar mass (bulge plus disk) of $8_{-7}^{+3}\times {10}^{10}$ M_⊙. Right: Corner plot for the stellar disk + bulge mass model.