A New Cepheid Distance Measurement and Method for NGC 6822
  We present a revised distance to the nearby galaxy NGC6822 using a new
multi-band fit to both previously published and new optical, near- and
mid-infrared data for Cepheid variables. The new data presented in this study
include multi-epoch observations obtained in 3.6\um and 4.5\um with the
\emph{Spitzer Space Telescope} taken for the Carnegie Hubble Program. We also
present new observations in J, H and \kswith FourStar on the Magellan Baade
telescope at Las Campanas Observatory. We determine mean magnitudes and present
new period-luminosity relations in V, I, J, H, \ks, IRAC 3.6\um and 4.5\um. In
addition to using the multi-band distance moduli to calculate extinction and a
true distance, we present a new method for determining an extinction-corrected
distance modulus from multi-band data with varying sample sizes. We combine the
distance moduli and extinction for individual stars to determine
$E(B-V)=0.35\pm0.04$ and a true distance modulus
$\mu_{o}=23.38\pm0.02_{stat}\pm0.04_{sys}$.
