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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/28401

Title: Missing mass in collisional debris from galaxies
Authors: Bournaud, F.
Duc, P.-A.
Brinks, E.
Boquien, Mérédic
Amram, Philippe
Lisenfeld, Ute
Koribalski, B. S.
Walter, F.
Charmandaris, V.
Issue Date: 2007
Abstract: 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.
Publisher: American Association for the Advancement of Science
Keywords: Galaxies
Dwarf
Mass function
URI: http://hdl.handle.net/10481/28401
ISSN: 0036-8075
1095-9203
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Bournaud, F.; et al. Missing mass in collisional debris from galaxies. Science Magazine, 316(5828): 1166-1169 (2007). [http://hdl.handle.net/10481/28401]
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