All Tables

Table 1: Observational parameters for narrow-band H $\alpha$ photometric observations and the TAURUS Fabry-Pérot interferometry for NGC 6951, NGC 3359 and NGC 1530. Seeing is taken as the FWHM measured in the final continuum-subtracted H $\alpha$ images of unsaturated stellar sources and the seeing for Fabry-Pérot observations is the FWHM of the continuum images obtained from the analysis of the data cubes and the spectral resolution is the velocity separation between adjacent planes in the data cube.
Table 2: Estimates of the uncertainties in the velocity dispersion due to changes in aperture dimensions for the central and most intense Gaussian function fitted to the observed spectrum for a group of selected H II regions in the barred galaxies: NGC 3359, NGC 1530 and NGC 6951. The catalogued radii of the H II regions (Rad. in Col. 3) and the apertures are in pixels in the intensity maps and $\sigma$ in km s^-1. The third value for $\sigma$ is obtained with a circular aperture of radius r. This radius r is the mean value of the radii obtained from the rectangular apertures, assuming their areas are equal to those of circular projected areas.
Table 3: Spectral Gaussian decomposition frequency analysis for the integrated line profiles extracted for the identified H II regions in NGC 1530, NGC 3359 and NGC 6951. Each column shows the fraction of the total emission profiles which are fitted by the specified number of Gaussian components (GC).
Table 4: Frequency distribution of the component decomposition for the integrated line profiles extracted for the selected H II regions in NGC 1530, NGC 3359 and NGC 6951. P; central peak or component included in the central peak, W; high velocity low intensity wing feature.
Table 5: Fraction (in %) of the number of H II regions for each galaxy with $\rm\sigma _{nt}<13$ km s^-1 and $\rm\sigma _{nt}>13$ km s^-1 and the mean value of the relative errors in the velocity dispersion of the central components for these two groups of H II regions.
Table 6: Variation of the log $L_{\scriptsize\mbox{H$\alpha$ }} - \log~\rm\sigma_{nt}$ envelope slope with the selected bin width. Each value and its error correspond respectively, to the median and standard deviation of the slopes for different bin starting points in log $L_{\scriptsize\mbox{H$\alpha$ }}$ .
Table 7: Representative fits to the envelopes of the log $L_{\scriptsize\mbox{H$\alpha$ }} - \log~\rm\sigma_{nt}$ distributions for NGC 1530, NGC 3359 and NGC 6951 and for the distribution defined with all the H II regions in the three galaxies. The logarithmic H $\alpha$ luminosity corresponds to the value given in the calibration catalogue.
Table 8: The same parameters as shown in Table 7, but the logarithmic H $\alpha$ luminosity is given by the fraction of the logarithmic H $\alpha$ luminosity of the catalogue corresponding to the most intense Gaussian peak.
Table 9: Logarithmic H $\alpha$ luminosity, emission measure, rms electron density, filling factor, virial mass, total mass of the H II region from the H $\alpha$ emission, mass of the stellar content in the H II region and the fraction of the mass of the region that represents the virial mass for the H II regions located on the envelope of Fig. 6 (without taking non-virial contamination into account, see text).
Table 10: Same parameters as in Table 9 but for a group of H II regions located well above the envelope in ${\sigma _{\rm nt}}$ of Fig. 6.
Table A.1: Slope of the envelope of the log $L_{{\rm H}\alpha} - \log~\sigma_{\rm nt}$ relation for the H II regions of NGC 3359 from H II region catalogues obtained using different criteria to estimate the H II region cut-off isophote (Col. 1). The slopes (Cols. 2 and 4) have been obtained with the procedure described in Sect. 6.2, and each value represents the median value of the slopes obtained by stepping the starting luminosity in the luminosity bins by 0.01 dex. Columns 2 and 4 show the median value when taking into account only H II regions with luminosities greater than log $L_{\scriptsize\mbox{H$\alpha$ }}>$ 38.4 and 38.8 (in erg s^-1) respectively. The standard deviation of each set of slopes is given in Cols. 3 and 5. Column 6 shows the completeness limit of the H II region catalogue obtained for each cut-off isophote criterion. The symbol "-'' means that there are not enough points to fit an envelope in that case.
Table A.2: Same as Table A.1 but for the H II regions of NGC 1530.