Astronomy & Astrophysics

Table 1: Values used for the different grid parameters. The grid spacing is listed between parentheses. Note that the grids labelled M 67 and NGC 188 overlap in part of their age range. We have calculated models for two extra mass ratios for a limited mass range in the M 67 grid to more clearly resolve trends at high and low mass ratios.
Table 2: Ages determined from isochrone fitting for adopted values of distance modulus and reddening. See Pols et al. (1998) for details.
Table 3: Coefficients for the fitting formula (8) for $q_{\rm c}$ . The mass range and metallicity for which the coefficients in each column are valid are given in the top row. The bottom row (rms) gives the root mean square error of the fits.
Table 4: Results for the Z=0.02 collisions. The first three columns give the grid parameters, followed by the collison case (Sect. 4.3), remnant mass, mass loss parameter (see Eq. (3)), main sequence lifetimes $\tau _{\rm ms}$ for the primary, the secondary and a star of the same mass as the remnant, the main sequence lifetime of the collision product $t_{\rm ms}$ (see Sect. 6), the central hydrogen abundances $X_{\rm c}$ after the collision and at the start of the main sequence (see Sect. 4.4) and the offset of the reddest point of the main sequence track in the HRD compared to a normal star of the same mass (Sect. 6.2). Mass and luminosity are in solar units and time is measured in Myr.
Table 5: As Table 4 for the Z=0.001 models.