The distance to NGC 6822 has also been estimated independently using the brightness of the tip of the red giant branch (RGB) of low mass stars following the method described in Da Costa & Armandroff (1990, AJ, 100, 162). The tip of the RGB is detected at I = 20.05 ± 0.10. This ...
Accurate astronomical distance determination is crucial for all fields in astrophysics, from Galactic to cosmological scales. Despite, or perhaps because of, significant efforts to determine accurate distances, using a wide range of methods, tracers, and techniques, an internally consistent astronomical di...