Astronomy & Astrophysics

All Tables

Table 1: Age, metallicity ( $[\frac{\rm Fe}{\rm H}]$ ) (mean and dispersion about the mean), radial metallicity gradient (dex/kpc), initial mass function (IMF), and star formation rate (SFR) of the stellar components.
Table 2: Local mass density $\rho _0$ of the stellar components, the dark matter halo and the interstellar medium (ISM). W-velocity dispersion $\sigma _W$ used for the dynamical self-consistency, and disc axis ratios $\epsilon$ resulting from this process. The white dwarf mass density is computed assuming a white dwarf mass of 0.6 $M_{\odot }$ .
Table 3: Density laws and associated parameter of the stellar components. $a^2 = R^2+\frac{z^2}{\epsilon^2}$ where R is the galactocentric distance, z is the height above the Galactic plane, and $\epsilon$ is the axis ratio. Values of $\epsilon$ are given in Table 2. The disc density law is given here without the warp and flare. The corrections for these structures are given in the text (Sect. 2.1.3). d₀ are normalization constants. For the bulge, N, x₀, y₀, z₀ and $R_{\rm c}$ are given in the text (Sect. 2.4), x, y, z being in the bulge reference frame.
Table 4: Velocity dispersions ( $\sigma _U,\sigma _V,\sigma _W$ ), asymmetric drift $V_{\scriptsize\mbox{ad}}$ at the solar position (see Sect. 2.1.4) and velocity dispersion gradient $\frac{{\rm d}\sigma_U}{{\rm d}R}$ .
Table 5: Bulge fitted parameters. Values from Dwek et al. (1995) are mean values obtained from the 2.2 $\mu$ m DIRBE data for their G2 density law. $\alpha$ , $\beta$ and $\gamma$ are orientation angles following the Dwek et al. (1995) notation. x₀,y₀, z₀ are the scale lengths in the three axes. $R_{\rm c}$ is the cutoff radius and N the central number density. The values of $\beta$ and $R_{\rm c}$ are not adjusted in the case of the Dwek et al. (1995) fitting process.