Thaisa Storchi-Bergmann Universidade Federal do Rio Grande do Sul Luis Colina Robledo Centro de Astrobiologia - CAB D. Michael Crenshaw Georgia State University Research Foundation Martin Elvis Smithsonian Institution Astrophysical Observatory Giuseppina Fabbiano Smithsonian Institution Astrophysical Observatory Steven B. Kraemer Catholic University of America Henrique R. Schmitt Naval Research Laboratory