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We report interferometric observations of the VeLLO L1521F-IRS, in 12CO (2-1)line emission and the 1.3 mm continuum emission, using the Submillimeter Array(SMA). With the 12CO high-resolution observations, we have spatially resolved acompact but poorly collimated molecular outflow associated with L1521F-IRS forthe first time. The blueshifted and redshifted lobes are aligned along the eastand west side of L1521F-IRS with a lobe size of ~1000 AU. The estimated outflowmass, maximum outflow velocity, and outflow force are (9.0-80)x10^{-4} M_{sol},7.2 km s^{-1}, and (7.4-66)x10^{-7} M_{sol} km s^{-1} yr^{-1}, respectively.The estimated outflow parameters such as size, mass, and momentum rate aresimilar to values derived for other VeLLOs, and are located at the lower end ofvalues compared to previously studied outflows associated with low- tohigh-mass star forming regions. Low-velocity less collimated (1.5 kms^{-1}/1200 AU) and higher-velocity compact (4.0 km s^{-1}/920 AU) outflowcomponents are suggested by the data. These velocity structures are notconsistent with those expected in the jet driven or wind driven outflow models,perhaps suggesting a remnant outflow from the FHSC as well as an undevelopedoutflow from the protostar. Detection of an infrared source and compactmillimeter continuum emission suggest the presence of the protostar, while itslow bolometric luminosity (0.034-0.07 L$_{\odot}$), and small outflow, suggeststhat L1521F is in the earliest protostellar stage ($<10^{4}$ yr) and contains asubstellar mass object. The bolometric (or internal) luminosity of L1521F-IRSsuggests that the current mass accretion rate is an order-of-magnitude lowerthan expected in the standard mass accretion model (~10^{-6} M_{sol} yr^{-1}),which may imply that L1521F-IRS is currently in a low activity phase.

Direct Imaging of a Compact Molecular Outflow from a Very Low-luminosity Object; L1521F-IRS