We present interferometric observations in the ^ { 12 } CO ( 2–1 ) line and at 1.3 mm dust continuum of the low-mass protostellar binary system in the cometary globule CG 30 , using the Submillimeter Array .
The dust continuum images resolve two compact sources ( CG 30N and CG 30S ) , with a linear separation of \sim 8700 AU and total gas masses of \sim 1.4 and \sim 0.6 M _ { \odot } , respectively .
With the CO images , we discover two high-velocity bipolar molecular outflows , driven by the two sources .
The two outflows are nearly perpendicular to each other , showing a quadrupolar morphology .
The northern bipolar outflow extends along the southeast ( redshifted , with a velocity up to \sim 23 km s ^ { -1 } ) and northwest ( blueshifted , velocity up to \sim 30 km s ^ { -1 } ) directions , while the southern pair has an orientation from southwest ( blueshifted , velocity up to \sim 13 km s ^ { -1 } ) to northeast ( redshifted , velocity up to \sim 41 km s ^ { -1 } ) .
The outflow mass of the northern pair , driven by the higher mass source CG 30N , is \sim 9 times larger than that of the southern pair .
The discovery of the quadrupolar molecular outflow in the CG 30 protobinary system , as well as the presence of other quadrupolar outflows associated with binary systems , demonstrate that the disks in ( wide ) binary systems are not necessarily co-aligned after fragmentation .