Red Giant Branch Stars (RGB)

Dixon, Don; Stassun, Keivan G.; Mathieu, Robert D.; Tayar, Jamie; Cao, Lyra. “Rotationally driven ultraviolet emission of red giant stars. II. Metallicity, activity, binarity, and subsubgiants.” Astronomical Journal 169 (2025): 309. https://doi.org/10.3847/1538-3881/adc92a.  Most red giant branch (RGB) stars rotate very… Read More