Due to some work on the network of the University de Strasbourg (provider of the CDS Internet link), the CDS services may be not accessible on Monday March 18th between 20:00 to 24:00 GMT+1.

In case of problem, use CDS mirror services :

Simbad => simbad.harvard.edu/Simbad

VizieR => http://vizier.cfa.harvard.edu/vizier/

Aladin java will automatically switch to another site if required.