Stellar kinematics and line-strength indices as measured along the major axis of NGC 4138. The radial profiles of the line-of-sight fourth- and third-order coefficient of the Gauss-Hermite decomposition of the LOSVD (h4 and h3); velocity dispersion (σ); velocity (v) after the subtraction of systemic velocity; and the line-strength indices Fe5335, Fe5270, Mgb, Mg2, and Hβ are plotted (from top to bottom). The red and blue dots indicate the receding (NW) and approaching (SE) side of the galaxy, respectively.
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