A New Cepheid Distance Measurement and Method for NGC 6822

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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 and 4.5 with the Spitzer Space Telescope taken for the Carnegie Hubble Program. We also present new observations in J, H and 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,, IRAC 3.6 and 4.5. 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±0.04 and a true distance modulus μₒ=23.38±0.02stat±0.04sys.