2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/195187We consider a new generalized Chaplygin gas model that includes the original Chaplygin gas model as a special case. In such a model the generalized Chaplygin gas evolves as from dust to quiessence or phantom. We show that the background evolution for the model is equivalent to that for a coupled dark energy model with dark matter. The constraints from the current type Ia supernova data favour a phantom-like Chaplygin gas model.8 pages, 3 figures, LaTeX2e, Accepted for publication in Phys. Lett. BAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenologytext