Metallicities from high resolution spectra of 49 RR Lyrae Variables
  Accurate metallicities of RR Lyrae are extremely important in constraining
period-luminosity-metallicity relationships (PLZ), particularly in the
near-infrared. We analyse 69 high-resolution spectra of Galactic RR Lyrae stars
from the Southern African Large Telescope (SALT). We measure metallicities of
58 of these RR Lyrae stars with typical uncertainties of 0.13 dex. All but one
RR Lyrae in this sample has accurate ({\sigma}_parallax ~ 10%) parallax from
Gaia. Combining these new high resolution spectroscopic abundances with similar
determinations from the literature for 93 stars, we present new PLZ
relationships in WISE W1 and W2 magnitudes, and the Wesenheit magnitudes
W(W1,V-W1) and W(W2,V-W2).
