[1] Observ Nacl, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, Brazil
[2] Lab Interinst E Astron LIneA, Rua Gal Jose Cristino 77, BR-20921400 Rio De Janeiro, RJ, Brazil
[3] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA
[4] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA
[5] Shanghai Jiao Tong Univ, Dept Astron, Shanghai 200240, Peoples R China
[6] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA
[7] Univ KwaZulu Natal, Sch Math Stat & Comp Sci, Astrophys & Cosmol Res Unit, Westville Campus,Private Bag X54001, ZA-4000 Durban, South Africa
[8] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA
[9] Barcelona Inst Sci & Technol, Inst Fis Altes Energies IFAE, Campus UAB, E-08193 Bellaterra, Barcelona, Spain
[10] Stanford Univ, Dept Phys, 382 Via Pueblo Mall, Stanford, CA 94305 USA
[11] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, POB 2450, Stanford, CA 94305 USA
[12] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA
[13] Max Planck Inst Extraterr Phys, Giessenbachstr, D-85748 Garching, Germany
[14] Ludwig Maximilians Univ Munchen, Fak Phys, Univ Sternwarte, Scheinerstr 1, D-81679 Munich, Germany
[15] Carnegie Mellon Univ, McWilliams Ctr Cosmol, Dept Phys, Pittsburgh, PA 15312 USA
[16] Ctr Invest Energet Medioambientales & Tecnol CIEM, E-28040 Madrid, Spain
[17] Univ Edinburgh, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland
[18] Natl Opt Astron Observ, Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile
[19] Univ Sao Paulo, Inst Fis, Dept Fis Matemat, CP 66318, BR-05314970 Sao Paulo, SP, Brazil
[20] Univ Autonoma Madrid, Inst Fis Teor UAM CSIC, Madrid 28049, Spain
[21] Inst Astrophys Paris, CNRS UMR 7095, F-75014 Paris, France
[22] Sorbonne Univ, UPMC Univ Paris 06, UMR 7095, Inst Astrophys Paris, F-75014 Paris, France
[23] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England
[24] Univ Illinois, Dept Astron, 1002 W Green St, Urbana, IL 61801 USA
[25] Natl Ctr Supercomp Applicat, 1205 West Clark St, Urbana, IL 61801 USA
[26] Univ Chicago, Dept Astron & Astrophys, Chicago, IL 60637 USA
[27] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA
[28] INAF Osservatorio Astron Trieste, Via GB Tiepolo 11, I-34143 Trieste, Italy
[29] Inst Fundamental Phys Universe, Via Beirut 2, I-34014 Trieste, Italy
[30] Santa Cruz Inst Particle Phys, Santa Cruz, CA 95064 USA
[31] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
[32] Inst Estudis Espacials Catalunya IEEC, E-08034 Barcelona, Spain
[33] CSIC, Inst Space Sci ICE, Campus UAB,Carrer Can Magrans S-N, E-08193 Barcelona, Spain
[34] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia
[35] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[36] Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA
[37] Macquarie Univ, Australian Astron Opt, N Ryde, NSW 2113, Australia
[38] Lowell Observ, 1400 Mars Hill Rd, Flagstaff, AZ 86001 USA
[39] Texas A&M Univ, George P & Cynthia Woods Mitchell Inst Fundamenta, College Stn, TX 77843 USA
[40] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 USA
[41] Inst Catalana Recerca & Estudis Avancats, E-08010 Barcelona, Spain
[42] Univ Cambridge, Inst Astron, Madingley Rd, Cambridge CB3 0HA, England
[43] Princeton Univ, Dept Astrophys Sci, Peyton Hall, Princeton, NJ 08544 USA
[44] Univ Fed Rio Grande do Sul, Inst Fis, Caixa Postal 15051, BR-91501970 Porto Alegre, RS, Brazil
[45] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England
[46] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37831 USA