Joseph P. Mullen (1), Massimo Marengo (1), Clara E. Martínez-Vázquez (2), Jillian R. Neeley (3), Giuseppe Bono (4, 5), Massimo Dall'Ora (6), Brian Chaboyer (7), Frédéric Thévenin (8), Vittorio F. Braga (5, 9), Juliana Crestani (4, 5,, 10), Michele Fabrizio (5, 9), Giuliana Fiorentino (5), Christina K. Gilligan (7), Matteo Monelli (11, 12), Peter B. Stetson (13) ((1) Department of Physics, Astronomy, Iowa State University, Ames, IA, USA, (2) Cerro Tololo Inter-American Observatory, NSF's National Optical-Infrared Astronomy Research Laboratory, La Serena, Chile, (3) Department of Physics, Florida Atlantic University, Boca Raton, FL, USA, (4) Dipartimento di Fisica, Università di Roma Tor Vergata, Roma, Italy, (5) INAF-Osservatorio Astronomico di Roma, Monte Porzio Catone, Italy, (6) INAF-Osservatorio Astronomico di Capodimonte, Napoli, Italy, (7) Department of Physics, Astronomy, Dartmouth College, Hanover, USA, (8) Université de Nice Sophia-antipolis, CNRS, Observatoire de la Côte d'Azur, Laboratoire Lagrange, Nice, France, (9) Space Science Data Center, Roma, Italy, (10) Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil, (11) Instituto de Astrofísica de Canarias, La Laguna, Tenerife, Spain, (12) Departmento de Astrofísica, Universidad de La Laguna, La Laguna, Tenerife, Spain, (13) Herzberg Astronomy, Astrophysics, National Research Council, Victoria, BC, Canada)
