Based on observations collected with the CAT Telescope of the European Southern Observatory and with the Swiss Photometric Telescope of the Geneva Observatory, both situated at La Silla in Chile

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

Full Tables 2-4, 6-15 are only available in electronic form at the CDS via anounymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/393/965

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... Cat

Postdoctoral Fellow of the Fund for Scientific Research, Flanders.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... data-set

The Geneva photometric data-sets generally consist of a few old measurements besides new ones gathered during our dedicated SPB-runs. Both groups of measurements are separated by several years. In these cases, we used the total time-span T^* of the dedicated SPB-runs instead of the total time-span T of all measurements.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.

... Paper I)

We prefered to use T^*, the total time-span of the dedicated SPB-runs in days, instead of T, the total time-span of all measurements in days, since the isolated first few measurements are less relevant here.

.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.