2 Observations

The radial velocity observations were done at Observatoire de Haute-Provence with the CORAVEL scanner attached to the 1-meter Swiss telescope. Although this instrument is optimized for late-type stars, it can still yield very good results on slowly rotating F stars, and even on A stars if their metallic lines are enhanced, as is the case of Ap and Am stars. Some Ap and Am stars have been measured as early as 1980, but more systematic surveys began in 1985 and in 1992 for the Ap and Am stars respectively.

The photometric observations were made in the Geneva system at different observing sites (Observatoire de Haute-Provence, Gornergrat and Jungfraujoch), but most observations of HD 43478 were made at Jungfraujoch (Switzerland) with the 76-cm telescope.

The individual radial velocities of all stars, as well as individual photometric measurements of HD 43478, are listed in Tables 6 to 12.