Accurate Distances to Important Spiral Galaxies: M63, M74, NGC 1291, NGC 4559, NGC 4625, and NGC 5398
Kristen. B. W. McQuinn et al 2017 AJ 154 51
Using Hubble Space Telescope optical imaging, the tip of the red giant branch method is used to more accurately measure the distances to six spiral galaxies in the Local Volume.