All Tables

Table 1: Physical and observational parameters of the 6 HFP galaxies observed with WSRT. Columns 1, 2: source names; Col. 3: projected linear sizes (Orienti et al. 2006); Col. 4: optical redshift; Col. 5: central frequency; Col. 6: channel resolution; Col. 7: 1 $\sigma$ noise level in the line cube; Col. 8: continuum flux density taken from our WSRT data at the observed frequency; Col. 9: peak flux density of the absorption line, measured on the spectral image; Col. 10: optical depth; Col. 11: the width of the H I absorption line: for J0111+3906 the FWHM is given, in the case of OQ 208 we give the FWZI, due to the complexity of the line profile; Col. 12: H I column density derived from $N_{\rm {H {\sc i}}} = 1.82 \times 10^{18} T_{\rm spin} \tau _{\rm peak} \Delta V$ cm^-2, a $T_{\rm spin}$ of 100 K has been assumed; Col. 13: the redshift of the peak H I absorption. The line flux density, the optical depth and the H I column density upper limits have been computed assuming the 2 $\sigma$ noise level, a line width of 100 km s^-1 and $T_{\rm spin}$ of 100 K, as in Vermeulen et al. (2003). a: For the source J0111+3906, the projected linear size is taken from Owsianik et al. (1998).