In 2009 we started an intense radial-velocity monitoring of a few nearby, slowly-rotating and quiet solar-type stars
within the dedicated HARPS-Upgrade GTO program. The goal of this campaign is to gather very-precise radial-velocity data
with high cadence and continuity to detect tiny signatures of very-low-mass stars that are potentially present in the habitable
zone of their parent stars. Ten stars were selected among the most stable stars of the original HARPS high-precision program
that are uniformly spread in hour angle, such that three to four of them are observable at any time of the year.