Erratum: The High Time Resolution Universe survey - IX. Polarimetry of long-period pulsars

The paper 'The High Time Resolution Universe survey - IX. Polarimetry of long-period pulsars' was published in MNRAS, 436, 3557 (2013). We report that nine of the dispersion measure (DM) values used in the paper were incorrect. This was because the DM values of these nine pulsars, drawn from tables intended for private use of the High Time Resolution Universe Collaboration, were out of date. The implication of using an incorrect DM is that the pulse profile suffers a spurious broadening, and this affects the polarization parameters and therefore the measured rotation measure (RM).