Astronomy & Astrophysics

Table 1: General properties of the sample galaxies, H $\alpha$ images and resulting H II region catalogues. Calibration constant, in log of L (erg s^-1) per count in the H $\alpha$ image (Col. 2), lower completeness limit of the LF (log L; Col. 3), number of H II regions catalogued (Col. 4), image scale in pc per arcsec (Col. 5), distance to the galaxy in Mpc (from Paper II; Col. 6), and resolution (seeing, FWHM) in the H $\alpha$ image in pc (Col. 7). N/A in Col. 2 means no calibration available, in Col. 3, PQ means poor quality LF and NDR means no disk H II regions. Columns 8, 9 tabulate the upper and lower limits (in $\log L$ ) of the luminosity function; Col. 10 the bin width used for the plotting and fitting of the LF, ranging from 0.2 to 0.7 dex as a function of the number of H II regions; Col. 11 the value of the slope, a, of a single power law fitted to the data; Col. 12 the combined error (in $\log L$ ), including background effects and calibration errors, and Col. 13 the coefficient of determination, r², where values closer to unity indicate better fits.
Table 2: Double fits to LFs for those galaxies whose LFs allowed such fits.