GeminiFocus December 2012 | Page 24

escape velocity is low, and therefore more material is ejected from them, polluting the surroundings. We suggest that these objects may be active polluters of the intergalactic medium where they were formed. Duilia de Mello is an Associate Professor at the Catholic University of America, Washington, D.C., USA. She can be reached at: [email protected] References: Sergio Torres-Flores is a Professor at the Departamento de Física, Universidad de La Serena, Chile. He can be reached at: [email protected] Bournaud, F., Duc, P.-A., “From tidal dwarf galaxies to satellite galaxies,” Astronomy and Astrophysics, 456: 481, 2006 De Mello, D. F., Torres-Flores, S., Mendes de Oliveira, C., ”Searching for Star Formation Outside Galaxies: Multiwavelength Analysis of the Intragroup Medium of Hickson Compact Group 100,” The Astronomical Journal, 135: 319, 2008 Claudia Mendes de Oliveira is a Professor at the University of São Paulo, SP Brazil. She can be reached at: [email protected] Fernanda Urrutia-Viscarra is a Ph.D. student at the University of São Paulo, SP Brazil. She can be reached at: [email protected] De Mello, D. F., Urrutia-Viscarra, F., Mendes de Oliveira, C., Torres-Flores, S., Carrasco, E. R., Cypriano, E., “Star formation in H I tails: HCG 92, HCG 100 and six interacting systems,” Monthly Notices Royal Astronomical Society, 426: 2441, 2012 Smith, B. J., “The discovery of a long H I plume near the peculiar galaxy NGC 2782 (ARP 215).” The Astrophysical Journal, 378: 39, 1991 Torres-Flores, S., de Oliveira, C. Mendes, de Mello, D. F., Scarano, S., Urrutia-Viscarra, F., “NGC 2782: a merger remnant with young stars in its gaseous tidal tail.” Monthly Notices Royal Astronomical Society, 421: 3612, 2012 Verdes-Montenegro, L., Yun, M. S. & Borthakur,