The diverse nature of spiral arms in the auriga Superstars cosmological hydrodynamic simulations. - Grand, Robert J J; Fragkoudi, Francesca; Pakmor, Rüdiger; Gómez, Facundo A; Voort, F Freeke van de; Bieri, Rebekka; Townson, Sophie (Monthly Notices of the Royal Astronomical Society, 2026)