All Tables

Table 1: Observations.
Table 2: Magnitudes of the objects in the field of NGC 7603 derived using "Sextractor'' (except those marked with *, which were derived separately with "phot'' taking care of the filament/halo subtraction and are affected by an error of at least 0.2 mag). Last column points out whether they are extended "E'' (as far as we can see from the available images and spectra; some further faint objects which look point-like might be extended too).
Table 3: Apparent magnitudes of objects in the filament between NGC 7603 and NGC 7603B. The R-Bessel magnitude was measured for three different epochs, the Sloan filters for only one epoch. Magnitudes in the Johnson filters and b_j photographic filter were calculated from the magnitudes in the Sloan filters (see text). Columns 3 and 4 give the observed apparent magnitudes (uncertainty $\sim$ 0.2 mag.). Columns 5 and 6 give the same magnitudes corrected of Galactic extinction (Schlegel et al. 1998) and filament extinction (by means of Eqs. (3) and (4)).
Table 4: Spectral analysis. The error in the redshift is $\approx$ $\pm$ 0.002. The codes for the last two columns are: 0-absorption emission line galaxy; 1-narrow emission line galaxy; 2-star; 3-contamination by the filament; 4-spectra very noisy.
Table 5: Equivalent widths (in angstroms) of the emission lines of the five observed narrow emission line galaxies. Errors include a rough determination of the noise and the error in the determination of the continuum, but do not include the error in the subtraction of the sky(+filament in objects #1, #2).