NGC-1333 IRAS-4 - FURTHER MULTIPLICITY REVEALED WITH THE CSO-JCMT INTERFEROMETER

Single-dish submillimeter continuum observations showed that IRAS 4 in the NGC 1333 region of the L1450 molecular cloud is a 30'' separation binary protostellar system. The components are designated as 4A and 4 B, and are believed to be very young and deeply embedded. Our observat ions with the CSO-JCMT Interferometer at lambda = 0.84 mm show that co mponents 4A and 4B are both multiple systems; the visibility curve for IRAS 4A is well fitted by a 1''.8 binary whose components are consist ent in size and flux with dusty accretion disks. IRAS 4B appears to sh ow even higher multiplicity, since it is not fitted well by either sin gle or binary models. We conclude that IRAS 4 is a hierarchical quadru ple, or higher order, embedded protostellar system.