  We have used the Aladin sky atlas of the Virtual Observatory to look for new
common proper-motion pairs in three young stellar kinematic groups: Local
Association (~10-120 Ma), Tucana-Horologium (~30 Ma) and ? Pictoris (~12 Ma).
We have found 9 new and 14 known common proper-motion companions to the 210
investigated stars. With the CAFOS instrument at the 2.2m Calar Alto telescope,
we have investigated in detail one of the new pairs, the HD 143809 AB system,
which is formed by a bright G0V primary star and a previously unknown young
M1.0-1.5Ve star.
