... measurements

Full Catalog illustrated in Table 6 is only available in electronic form at CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/430/751

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... LEDA objects

85% of galaxies in LEDA come from the automatic analysis of the POSS1 survey (Paturel et al. 2000) and 15% come from the literature, the main contributions coming from: Vorontsov-Velyaminov et al. (MCG), Nilson (UGC), Lauberts & Valentijn (ESO and ESOLV), Zwicky et al. (CGCG) - see Paturel et al. (2003a) for the details.

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... data

We checked also some possible correlations (e.g., q vs. $sec \ \zeta$ or q vs. |b|) without finding any significant correlation. The quality of images reflects only the quality of the sky, at the time of observation.

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... radius

The equivalent radius is defined as $r_*=\sqrt{s/\pi}$. Note that the radius we use shares the elliptical ring in two equal areas.

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