V.F. Braga (1,2), A. Bhardwaj (3), R. Contreras Ramos (1,4), D. Minniti (1,2,5), G. Bono (6,7), R. de Grijs (8,9), J.H. Minniti (4,10), M. Rejkuba (11) ((1) Instituto Milenio de Astrofísica, Santiago, Chile, (2) Departamento de Física, Facultad de Ciencias Exactas, Universidad Andrés Bello, Santiago, Chile, (3) Kavli Institute for Astronomy, Astrophysics, Peking University, China, (4) Pontificia Universidad Católica de Chile, Instituto de Astrofísica, Macul, Chile, (5) Vatican Observatory, Italy, (6) Department of Physics, Università di Roma Tor Vergata, Italy, (7) INAF-Osservatorio Astronomico di Roma, Italy, (8) Department of Physics, Astronomy, Macquarie University, Balaclava Road, Sydney, Australia, (9) International Space Science Institute--Beijing, Zhongguancun, China, (10) European Southern Observatory, Santiago, Chile, (11) European Southern Observatory, Garching, Germany)
