The host of the Type I SLSN 2017egm - A young, sub-solar metallicity environment in a massive spiral galaxyL. Izzo, C. C. Thöne, R. García-Benito, A. de Ugarte Postigo, Z. Cano, D. A. Kann, K. Bensch, M. Della Valle, D. Galadí-Enríquez and R. P. HedrosaA&A, 610 (2018) A11DOI: https://doi.org/10.1051/0004-6361/201731766