Two-component decomposition results of three example galaxies with different types. Top to bottom: A classical bulge galaxy (cBG), a pseudo-bulge galaxy (pBG), and an elliptical galaxy (E) are shown in each row. Their IDs and types are shown in the top left and bottom right corners in the most left panels. In each row, from left to right: (1) The first panel shows the colour image and F160W image (inserted). The red and blue ellipses are the effective radii range of the bulge and disk components of the SerExp fitting. (2) The second panel displays the images from the Ser (top left subpanel) and SerExp (top right subpanel) models, where the SerExp model image is the sum of the model image of its bulge (bottom left subpanel) and disk (bottom right subpanel). The effect of the PSF has been included in these model images. The outputs of fitting for each model are shown on the left bottom corners of each subpanel, including Sérsic index (n), apparent magnitude (mag), effective radius (R), axial ratio (Ar), and position angle (Pa). (3) The third panel presents light profiles, where black dots are raw data, and the solid grey line displays the Ser model fitting result. The solid black line is SerExp model fitting result, which is the sum of its bulge and disk represented by the solid red and blue lines, where the PSF is also included. The vertical grey, red, and blue dash-dot lines are the effective radii of Ser model R_e, bulge R_b, and disk R_d. (4) The fourth panel shows the 1D and 2D residuals. The grey square and black pentagon are the 1D residuals for the Ser and SerExp models respectively. The 2D residuals for Ser and SerExp are displayed on top and bottom right corners.