4 Presentation of the results

Determinations of the heliocentric radial velocity $v_{\rm hel}$ and central velocity dispersion $\sigma_0$ are listed in Cols. (10) and (11) of Table 1. The V(r) and $\sigma(r)$ profiles are presented in Fig. 1, and also in Table 3, which is available in electronic form only. Table 1 also lists (Col. 12) a factor $f_{\rm bulge}$ measuring the effects of resolution and disk-light contamination on the central velocity dispersion of the bulge; this is discussed in the Appendix below.

  

Table 1: Catalog elements and spectroscopic results

Notes. Cols. (2) to (9) are from the LEDA database (status: LEDA1998); Cols. (10) to (12) are determinations of this work. Col. (2): morphological type; cols. (3), (4): coordinates; Col. (5): $B_{\rm Tc}$, integrated blue magnitude, corrected for Galactic and internal extinction; Col. (6): D₂₅, diameter at isophote $\mu_B=25$ mag arcsec^-2, in arcmin; Col. (7): $\epsilon_{25}$, ellipticity at isophote $\mu_B=25$;Col. (8): PA, position angle of major axis, in degrees (North through East); Col. (9): M_B, absolute B magnitude, from $B_{\rm Tc}$ and kinematical distance modulus with $H_0={\rm 75 \, km \, s^{-1} \, Mpc^{-1}}$, except for objects with a very small radial velocity (for which LEDA makes use of other parameters); Col. (10): $v_{\rm hel}$, heliocentric radial velocity, in kms^-1; Col. (11): $\sigma_0$, central velocity dispersion, in kms^-1; Col. (12): $f_{\rm bulge}$, factor indicating the degree to which resolution effects and contamination by disk light have influenced the observed central bulge kinematics; $\sigma_0/f_{\rm bulge}$ is then a closer approximation to the averaged, luminosity weighted bulge velocity dispersion within $0.1 r_{\rm e}$ (see Sect. 5 and the Appendix).

As in SP, we have adopted the following convention for the position angle PA: for $0<{\rm PA}<180\hbox{$^\circ$}$, r<0 corresponds to the eastern side of the galaxy, for $180<{\rm PA}<360\hbox{$^\circ$}$, r<0 corresponds to the western side, and for ${\rm PA}=0\hbox{$^\circ$}$, r<0 is to the North.

Table 1, Table 2, and Table 3 are available from the CDS. The data presented here, including the graphs of Fig. 1, are also available at the HYPERCAT on-line catalog browser (Prugniel et al. 1998), at the following URL:

http://www-obs.univ-lyon1.fr/hypercat/.

  

Figure 1: Profiles of rotation velocities and velocity dispersions

  

Figure 1: continued

  

Figure 1: continued