Astronomy & Astrophysics

Table 1: Log of the photometric data of DE CVn.
Table 2: Log of spectroscopic observations.
Table 3: Times of mid-eclipse for the binary DE CVn. The numbers in parentheses are the uncertainties on the mid-eclipse times in the last digits.
Table 4: u', g', i' (ULTRACAM, May 24, 2003), and UBVI (MDM) magnitudes of DE CVn and the two comparison stars with the uncertainty on the last digits in parentheses.
Table 5: Identified lines in the TLS echelle spectra and the ISIS (^a) spectrum together with their equivalent widths.
Table 6: Parameters of different white dwarf progenitors at the time the core mass reaches $0.52~M_\odot$ .