3

HII Regions Filling Factor in NGC 628 and Spatial Association with Dusty Filaments
Lorena Aragüete Riesco, José Manuel Vílchez, Salvador Duarte Puertas, Laurie Rousseau-Nepton, Carmelle Robert, René Pierre Martin, Philippe Amram, Robert Kennicutt, Jr., Christophe Morisset, Ray Garner