  We present Very Large Array observations at 7 mm of the sources IRAS 2A, IRAS
2B, MMS2, MMS3 and SVS 13, in the NGC1333 region. SVS 13 is a young close
binary system whose components are separated by 65 AU in projection. Our high
angular resolution observations reveal that only one of the components of the
SVS 13 system (VLA 4B) is associated with detectable circumstellar dust
emission. This result is in contrast with the well known case of L1551 IRS5, a
binary system of two protostars separated by 45 AU, where each component is
associated with a disk of dust. Both in SVS 13 and in L1551 IRS5 the emission
apparently arises from compact accretion disks, smaller than those observed
around single stars, but still massive enough to form planetary systems like
the solar one. These observational results confirm that the formation of
planets can occur in close binary systems, either in one or in both components
of the system, depending on the specific angular momentum of the infalling
material.
