Exploring the link between C IV outflow kinematics and
  sublimation-temperature dust in quasars
  Using data from SDSS, UKIDSS and WISE, we investigate the properties of the
high-frequency cutoff to the infrared emission in $\simeq$5000 carefully
selected luminous ($L_{bol} \simeq 10^{47}$) type 1 quasars. The strength of
$\simeq$2 $\mu$m emission, corresponding to emission from the hottest (T>1200K)
dust in the sublimation zone surrounding the central continuum source, is
observed to correlate with the blueshift of the C IV $\lambda$1550 emission
line. We therefore find that objects with stronger signatures of nuclear
outflows tend to have a larger covering fraction of sublimation-temperature
dust. When controlling for the observed outflow strength, the hot dust covering
fraction does not vary significantly across our sample as a function of
luminosity, black hole mass or Eddington fraction. The correlation between the
hot dust and the C IV line blueshifts, together with the lack of correlation
between the hot dust and other parameters, therefore provides evidence of a
link between the properties of the broad emission line region and the
infrared-emitting dusty regions in quasars.
