All Tables

Table 1: Individual radial velocity measurements. Observations between MJD 54 303 and MJD 54 313 were taken with CORALIE, the CASLEO spectra between MJD 54 520 and MJD 54 581, while MJD 54 141 and 52 027 correspond to FEROS spectra.
Table 2: Orbital elements for $\theta$ Car. P is the orbital period, $v_\gamma$ is the system velocity, K₁ the semi-amplitude of the radial velocity curve of component 1, e is the eccentricity, $\omega _1$ the periastron longitude, a₁ the semi-major axis, i the orbital inclination, $t({\rm conj})$ the time of the primary conjunction, and $t({\rm per})$ the time of the periastron passage.
Table 3: Physical parameters of the programme stars (values for $\xi ^1$ CMa from Morel et al. 2006).
Table 4: Mean NLTE abundances (on the scale in which $\log \epsilon$ [H] = 12) and total 1 $\sigma$ -uncertainties (values for $\xi ^1$ CMa from Morel et al. 2006). The number of spectral lines used is given in brackets. A blank indicates that the abundance of a given element could not be determined. For comparison purposes, we provide in the last column the typical values found for OB dwarfs in the solar neighbourhood (Daflon & Cunha 2004; Gummersbach et al. 1998; Kilian-Montenbruck et al. 1994). We define [N/C] and [N/O] as $\log$ [ $\epsilon$ (N)/ $\epsilon$ (C)] and $\log$ [ $\epsilon$ (N)/ $\epsilon$ (O)], respectively.
Table 5: Individual measurements of the mean longitudinal magnetic field for $\theta$ Car for the observations in 2004 and 2007.
Table 6: Individual measurements of the mean longitudinal magnetic field for the strongly magnetic star HD 94660.