that galaxies in compact groups follow the T-F relation, with a few exceptions. This result is in contrast with an earlier result by R1991, who found an offset of the T-F relation for most galaxies in compact groups in the sense that galaxies in compact groups have lower velocities for a given luminosity. The disagreement is explained by the differences in the amplitudes of the derived rotation curves, V$_{max}$, as discussed in Section 3, mainly due to a different choice of galactic parameters (center, inclination and position angle) and a less extended rotation curve in the case of curves obtained from long-slit spectroscopy. Generally, a choice of parameters guided by photometry alone (when no kinematic maps are available) will result in a lower V$_{max}$ of a galaxy, affecting the T-F relation in the direction of the R1991 result.

Discussion and future prospects
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The fact that the $B$-band T-F relation is similar for compact group and field galaxies tells us that these galaxies show common mass-to-size relations. However, since the parameters for the T-F relation are mostly derived in the inner parts of the galaxy, this agreement does not tell us much about the dark matter, a dominant component in 