Forty-seven high-resolution spectra (35 in H and 12 in H
) were obtained
in July 16-20, 1991 and in July 25-27, 1992 with the Coudé Echelle Spectrometer
(CES) installed at the 1.4 m Coudé Auxiliary Telescope (CAT) of the European
Southern Observatory (ESO) at La Silla (Chile). An RCA CCD was used
as detector and a spectral resolving power
was ensured for all the spectra.
A detailed description of the observational data, their reduction and analysis
are given in Paper I.
Besides of that,
16 spectra near H and 6 spectra in the region of the He I 5876 and
DNaI lines were obtained at the Astrophysical National Laboratory
of Brazil in 1992-1995. The observations were carried out
using the coudé spectrograph of the 1.6m telescope equipped with
a
pixels CCD detector.
A spectral resolving power R of 15000 and S/N ratio of
about 200 (near the continuum level) were achieved in each spectrum
with the wavelength coverage
of about 150 Å.
The reduction process follows the standard procedure as described by Wagner (1992), using the IRAF package.
About 50 polarimetric estimates in the bands
were obtained in July 17-31, 1995 at the SAAO with
the UCT-polarimeter (Cropper 1985), attached to the 0.75m telescope. The
polarimeter module contains a half-wave and a quarter-wave plate rotating
in opposite directions, allowing simultaneous linear and circular polarization
measurements. All observations were made with
aperture.
The polarimeter was
calibrated using polarimetric standards of Hsu & Breger
(1984). Data reduction was performed in the Keele University using
the suite of programs which was created at the SAAO.