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We present interferometric observations in the 12CO (2-1) line and at 1.3 mmdust continuum of the low-mass protostellar binary system in the cometaryglobule CG30, using the Submillimeter Array. The dust continuum images resolvetwo compact sources (CG30N and CG30S), with a linear separation of ~8700 AU andtotal gas masses of ~1.4 and ~0.6 M_sun, respectively. With the CO images, wediscover two high-velocity bipolar molecular outflows, driven by the twosources. The two outflows are nearly perpendicular to each other, showing aquadrupolar morphology. The northern bipolar outflow extends along thesoutheast (redshifted, with a velocity up to ~23 km/s) and northwest(blueshifted, velocity up to ~30 km/s) directions, while the southern pair hasan orientation from southwest (blueshifted, velocity up to 13 km/s) tonortheast (redshifted, velocity up to ~41 km/s). The outflow mass of thenorthern pair, driven by the higher mass source CG30N, is ~9 times larger thanthat of the southern pair. The discovery of the quadrupolar molecular outflowin the CG30 protobinary system, as well as the presence of other quadrupolaroutflows associated with binary systems, demonstrate that the disks in (wide)binary systems are not necessarily co-aligned after fragmentation.

SMA CO(2-1) Observations of CG30: A Protostellar Binary System with a High-Velocity Quadrupolar Molecular Outflow