Browsing by Author "Welsh, Louise"

Now showing items 1-1 of 1

    • Primordial helium-3 redux : the helium isotope ratio of the Orion nebula 
      Cooke, Ryan J.; Noterdaeme, Pasquier; Johnson, James W.; Pettini, Max; Welsh, Louise; Peroux, Celine; Murphy, Michael T.; Weinberg, David H. (IOP, 2022)
      We report the first direct measurement of the helium isotope ratio, He-3/He-4, outside of the Local Interstellar Cloud, as part of science-verification observations with the upgraded CRyogenic InfraRed Echelle Spectrograph. ...