2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/5149We report on a large survey for double degenerate (DD) binaries as potential progenitors of type Ia supernovae with the UVES spectrograph at the ESO VLT (ESO SN Ia Progenitor surveY - SPY).in: "White Dwarfs", Proc. XIII Workshop on White Dwarfs, eds. D. de Martino, R. Kalytis, R. Silvotti, J.E. Solheim, Kluwer, in press, 4 pages, 1 figureAstrophysicstext