Pilar Ruiz-Lapuente Instituto de Fisica Fundmental (CSIC) Ramon Canal Universitat de Barcelona Ryan Chornock University of California - Berkeley Fernando Comeron European Southern Observatory - Germany Alex V. Filippenko University of California - Berkeley Ryan Foley University of California - Santa Cruz Jonay I. Gonzalez-Hernandez Instituto de Astrofisica de Canarias Rodrigo Ibata Universite de Strasbourg I Robert L. Kurucz Smithsonian Institution Astrophysical Observatory Javier Mendez Isaac Newton Group of Telescopes