F. Fusco, R. Buonanno, G. Bono, S. Cassisi, M. Monelli, A. Pietrinferni
On the basis of a new photometric analysis of the Local Group Dwarf Irregular Galaxy NCG 6822 based on observations obtained with Advanced Camera for Surveys on board of the the Hubble Space Telescope, we have obtained a new estimate of the extinction of two fields located in the southeast region of the galaxy. Due to the presence of significant differences in the distance estimates to NGC 6822 available in literature, we have decided to provide an independent determination of the distance to this galaxy based on an updated and self-consistent theoretical calibration of the tip of the Red Giant Branch (TRGB) brightness. As a result we have obtained a new determination of the distance to NGC 6822 equal to ${\rm(m-M)}_0=23.54\pm 0.05$, and compared our measurement with the most recent determinations of this distance.
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http://arxiv.org/abs/1210.6753
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