Exploring the long-term temporal variability in polarization through multi-epoch optical spectro-polarimetry - Part II: A sample of symbiotic and red-giant stars
The episode discusses a paper on 26 months of spectro-polarimetric observations of 6 symbiotic stars and 18 red giants using the ProtoPol instrument. It finds common continuum polarization in red giants, variable Raman-scattered O VI features in symbiotics, and minimal Hα polarization, with implications for scattering models and mass-loss geometry.