There’s another new paper from the UW Massive Stars research group! This one is led by UW undergraduate student Brooke Dicenzo and studies the utility of Ti, Fe, and Ca absorption lines as tools for determine temperature and other parameters in red supergiants. The physics of these stars’ atmospheres gets pretty complex and Brooke’s work has demonstrated that the Ti and Fe lines that are so well-behaved at warmer temperatures get a bit more complex when supergiants are this cold! (as an interesting note, Brooke also did this research with me almost entirely remotely and started it while still a high school student!)
The paper is currently in press with AJ and can be found on arXiv!