All spectra are corrected for redshift and a foreground extinction of $E(B-V) = 0.0939$ using the dust maps of @Schlafly2011 and the extinction curve from @Cardelli1989. All spectra are plotted in Figure \[fig:spec\]. For host-subtracted spectra (section \[sec:host\] and appendix), we apply these corrections after scaling and subtraction.

Host galaxy properties {#sec:host}
======================

Morphology {#sec:morph}
----------

The host of AT2019qiz is a face-on spiral galaxy. A large-scale bar is visible in the PanSTARRS image (Figure \[fig:ps1\]). @French2020 analysed *Hubble Space Telescope* (*HST*) images of four TDE hosts and identified bars in two. While central bars (on scales $\lesssim 100$pc) can increase the TDE rate by dynamically feeding stars towards the nucleus [@Merritt2004], there is no evidence that large-scale bars increase the TDE rate [@French2020]. Given the proximity of AT2019qiz, this galaxy is an ideal candidate for *HST* or adaptive optics imaging to resolve the structure of the nucleus.

Recent studies have shown that TDE host galaxies typically have a more central concentration of mass than the background galaxy population [@LawSmith2017; @Graur2018]. The most recent compilation [@French2020rev] shows that the Sérsic indices of TDE hosts range from $\approx 1.5-6$, consistent with the background distribution of quiescent galaxies but significantly higher than 