Missing mass in collisional debris from galaxies Bournaud, F. Duc, P.-A. Brinks, E. Boquien, Mérédic Amram, Philippe Lisenfeld , Ute Koribalski, B. S. Walter, F. Charmandaris, V. Galaxies Dwarf Mass function Recycled dwarf galaxies can form in the collisional debris of massive galaxies. Theoretical models predict that, contrary to classical galaxies, they should be free of non-baryonic Dark Matter. Analyzing the observed gas kinematics of such recycled galaxies with the help of a numerical model, we demonstrate that they do contain a massive dark component amounting to about twice the visible matter. Staying within the standard cosmological framework, this result most likely indicates the presence of large amounts of unseen, presumably cold, molecular gas. This additional mass should be present in the disks of their progenitor spiral galaxies, accounting for a significant part of the so-called missing baryons. 2013-10-10T09:18:01Z 2013-10-10T09:18:01Z 2007 info:eu-repo/semantics/preprint Bournaud, F.; et al. Missing mass in collisional debris from galaxies. Science Magazine, 316(5828): 1166-1169 (2007). [http://hdl.handle.net/10481/28401] 0036-8075 1095-9203 arXiv:0705.1356v1 http://hdl.handle.net/10481/28401 10.1126/science.1142114 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License American Association for the Advancement of Science