AU Mic b is the Youngest Planet to have a Spin-Orbit Alignment Measurement

Brett C. Addison, Jonathan Horner, Robert A. Wittenmyer +20

We report measurements of the sky-projected spin-orbit angle for AU\,Mic\,b, a Neptune-size planet orbiting a very young ($\sim 20$\,Myr) nearby pre-main sequence M dwarf star which…