Astronomy & Astrophysics manuscript no. SNII_Z_EWs_refv_proof c ESO 2018 June 25, 2018 Type II supernovae as probes of environment metallicity: observations of host H ii regions J. P. Anderson1, C. P. Gutiérrez1,2,3, L. Dessart4, M. Hamuy3,2, L. Galbany2,3, N. I. Morrell5, M. D. Stritzinger6, M. M. Phillips5, G. Folatelli7,8,H.M.J.Boffin1, T. de Jaeger2,3, H. Kuncarayakti2,3, and J. L. Prieto9,2 1European Southern Observatory, Alonso de Córdova 3107, Casilla 19, Santiago, Chile. e-mail:
[email protected] 2Millennium Institute of Astrophysics, Casilla 36-D, Santiago, Chile 3Departamento de Astronomía, Universidad de Chile, Camino El Observatorio 1515, Las Condes, Santiago, Chile 4Laboratoire Lagrange, Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Boulevard de l’Observatoire, CS 34229, 06304 Nice cedex 4, France. 5Carnegie Observatories, Las Campanas Observatory, Casilla 601, La Serena, Chile 6Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark 7Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata (UNLP), Paseo del Bosque S/N, B1900FWA, La Plata, Argentina; Instituto de Astrofísica de La Plata, IALP, CCT-CONICET-UNLP, Argentina 8Kavli Institute for the Physics and Mathematics of the Universe (WPI), The University of Tokyo, Kashiwa, Chiba 277-8583, Japan 9Núcleo de Astronomía de la Facultad de Ingeniería, Universidad Diego Portales, Av. Ejército 441 Santiago, Chile ABSTRACT Context. Spectral modelling of type II supernova atmospheres indicates a clear dependence of metal line strengths on progenitor metallicity. This dependence motivates further work to evaluate the accuracy with which these supernovae can be used as environment metallicity indicators.