We provide the CO-core white dwarf (WD) cooling tracks described in Salaris, Cassisi, Pietrinferni & Hidalgo (2021, MNRAS submitted).

The tracks have been calculated for masses M(WD) equal to 0.54, 0.61, 0.68, 0.77, 0.87, 1.0, 1.1 solar masses, with hydrogen and helium atmospheres, respectively, for two different choices of the electron conduction opacities, namely Cassisi et al. (2007 - labelled c07) and Blouin et al. (2020 - labelled b20).

The hydrogen atmosphere models (labelled as DA) comprise a CO core surrounded by pure-He layers with mass equal to 0.01 M(WD), and by surface pure-H layers with mass equal to 0.0001 M(WD).

The helium atmosphere models (labelled as DB) have pure-helium layers (mass equal to 0.01 M(WD)) around the CO core.

For each value of M(WD), atmosphere type (DA or DB) and choice of opacity (c07 or b20), we have calculated models with different mass fractions of Ne in the CO core. The mass fraction of Ne is to a good approximation equal to the metal mass fraction Z of the progenitor, and calculations are available for Z=0.04 (labelled as Z04), 0.03 (Z03), 0.017 (Z02), 0.01 (Z01), 0.006 (Z006) and without Ne (labelled as metal poor), because the effect of Ne diffusion in the liquid phase is negligible below Z=0.006. For some combinations of atmosphere composition and choice of the opacities, the effect of Ne diffusion is negligible also at Z larger than 0.006, hence these tracksare missing, because they are equivalent to the calculations without Ne.

The files include the logarithm of the cooling age in yr, the logarithm of the bolometric luminosity in solar units, the logarithm of the effective temperature (in K) plus bolometric magnitudes in various photometric filters.

The coding of the filenames is as follows:

COOL(mass)BaSTIIAC(metallicity)_(envelope type)(opacity type)opa_(photometric system)

For example:


corresponds to the cooling track of 1.1Mo models calculated using the Cassisi et al. (2007) electron conduction opacities, with hydrogen envelopes, a Ne content in the core corresponding to a progenitor metallicity Z=0.04, and magnitudes in the sdss and Pan-STARSS photometric bands.

The following photometric systems are available (in parenthesis the label used in the filenames)