Soeren S. Larsen Radboud University Nijmegen Emilio Alfaro Instituto de Astrofisica de Andalucia (IAA) Paola Battinelli Osservatorio Astronomico di Roma Yuri Efremov Sternberg State Astronomical Institute Bruce Elmegreen Unaffiliated Paul W. Hodge University of Washington Tom Richtler Universidad de Concepcion