All Tables

Table 1: Journal of observations concerning the IUE spectra used in this study.
Table 2: Equivalent widths of the helium lines measured with the SARG-TNG and at Catania Astrophysical Observatory (last two columns). We compared our measurements with the B-type stars of similar effective temperature extracted from Gies & Lambert (1992). All equivalent widths are expressed in mÅ.
Table 3: Abundances derived for HD 207538 expressed in the usual form $\log \epsilon$ (El) compared with those estimated by Daflon et al. (1999) (Col. 3), by Gies & Lambert (1992) (Col. 4) and the Sun (Grevesse et al. 1996, Col. 5). Errors have been estimated to be 0.2 dex.
Table 4: ISM molecular and atomic column densities toward HD207538.