December 20, 2021 Updates Posted on December 20, 2021 by Doug Loss Predicting the water content of interstellar objects from galactic star formation histories https://arxiv.org/abs/2112.05773 Estimating fundamental parameters of nearby M dwarfs from SPIRou spectra https://academic.oup.com/mnras/advance-article-abstract/doi/10.1093/mnras/stab3679/6468761?redirectedFrom=fulltext Characterizing the WASP-4 system with TESS and radial velocity data: Constraints on the cause of the hot Jupiter’s changing orbit and evidence of an outer planet https://arxiv.org/abs/2112.09621 Localizing flares to understand stellar magnetic fields and space weather in exo-systems https://arxiv.org/abs/2112.09676