Redshift evolution of the underlying type Ia supernova stretch distribution N. Nicolas, M. Rigault, Y. Copin, R. Graziani, G. Aldering, M. Briday, Y.-L. Kim, J. Nordin, S. Perlmutter and M. Smith A&A, 649 (2021) A74 Published online: 13 May 2021 DOI: 10.1051/0004-6361/202038447