The Henize sample of S stars. II. Data

This paper presents data collected on the Henize sample of 205 S stars: (i) CORAVEL radial-velocity data; (ii) photometric data in the UBV bands of the Geneva photometric system; (iii) photometric data in the JHKL bands of the SAAO photometric system; (iv) IRAS fluxes; (v) low-resolution spectra of 158 S stars. Close visual companions have been found for Hen 47, 94, 105 and 155. Spectroscopic orbital elements are provided for Hen 2, 108, 121, 137 and 147. The analysis of these data is presented in a companion paper. Based on observations carried out at the European Southern Observatory (ESO, La Silla, Chile), at the 70~cm Swiss telescope at ESO and at the South African Astronomical Observatory.