1. Department of Physics and Astronomy, Vassar College , 124 Raymond Ave, Box 743, Poughkeepsie, NY 12604, USA
2. Department of Physics and Astronomy, Haverford College , 370 Lancaster Ave, Haverford, PA 19041, USA
3. Department of Astronomy and Astrophysics, UC Santa Cruz , 1156 High St, Santa Cruz, CA 95064, USA
4. Departamento de Astronomia, Instituto de Física, Universidade Federal do Rio Grande do Sul , CP 15051, 91501-970, Porto Alegre, RS, Brazil
5. Instituto de Astronomía y Ciencias Planetarias, Universidad de Atacama , Copayapu 485, Copiapó, Chile
6. Department of Astronomy, New Mexico State University , 1780 E University Ave, Las Cruces, NM 88003, USA
7. Laboratório Interinstitucional de e-Astronomia – LIneA , Rua Gal. José Cristino 77, Rio de Janeiro, RJ 20921-400, Brazil
8. Millennium Institute of Astrophysics , Nuncio Monsenor Sotero Sanz 100, Of. 104, Providencia, Santiago, Chile
9. Departamento de Física, CCNE, Universidade Federal de Santa Maria , Santa Maria, RS 97105-900, Brazil
10. Department of Astronomy, University of Washington , 15th Ave. NE, Room C319, Seattle, WA 98195-0002, USA