K-band brightness profile derived from the 2MASS image. The solid line is the best fit of the data (filled squares). The two components of the model, bulge (dashed line) and disk (dot-dashed line), are shown. In the horizontal axis the positions of the effective radius r_e and the scale radius h are marked. The width of the 2MASS K-band PSF is signaled with the vertical dotted line. The sky level is reached at  ~21 mag arcsec^-2.