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We present the results of ALMA observations toward the low-mass Class-0binary system, VLA 1623Aab in the Ophiuchus molecular cloud in $^{12}$CO,$^{13}$CO, and C$^{18}$O(2--1) lines. Our $^{12}$CO ($J$=2--1) data reveal thatthe VLA 1623 outflow consists of twin spatially overlapped outflows/jets. Theredshifted northwestern jet exhibits the three cycles of wiggle with a spatialperiod of 1360$\pm$10 au, corresponding to a time period of 180 yr. Thewiggle-like structure is also found in the position-velocity (PV) diagram,showing an amplitude in velocity of about 0.9 km s$^{-1}$. Both the period andthe velocity amplitude of the wiggle are roughly consistent with those expectedfrom the binary parameters, i.e., the orbital period (460$\pm$20 yr) and theKeplerian velocity (2.2 km s$^{-1}$). Our $^{13}$CO and C$^{18}$O images revealthe nature of the dense gas in the two cm/mm sources, VLA 1623-B and -W, andits relation to the outflows, and strongly support the previous interpretationthat both are shocked cloudlets. The driving sources of the twin molecularoutflows are, therefore, likely to be within the VLA 1623Aab binary. The axesof the two molecular outflows are estimated to be inclined by 70$\arcdeg$ fromeach other across the plane of sky, implying that the associated protostellardisks are also misaligned by $70\arcdeg$. Such a misalignment, together with asmall binary separation of 34 au in the one of the youngest protobinary systemsknown, is difficult to explain by models of disk fragmentation in quiescentenvironments. Instead, other effects such as turbulence probably play roles inmisaligning the disks.

Misaligned Twin Molecular Outflows From Class-0 Proto-stellar Binary System VLA 1623A Unveiled by ALMA