We present high angular resolution observations of water masers at 1.3 cm and radio continuum emission at 1.3 , 3.6 and 6 cm towards the Bok globule CB 54 using the Very Large Array .
At 1.3 cm , with subarsecond angular resolution , we detect a radio continuum compact source located to the south-west of the globule and spatially coincident with a mid-infrared embedded object ( MIR-b ) .
The spectral index derived between 6 and 1.3 cm ( \alpha =0.3 \pm 0.4 ) is flat , consistent with optically thin free-free emission from ionized gas .
We propose the shock-ionization scenario as a viable mechanism to produce the radio continuum emission observed at cm frequencies .
Water masers are detected at two different positions separated by 2.3 \arcsec , and coincide spatially with two mid-infrared sources : MIR-b and MIR-c .
The association of these mid-IR sources with water masers confirms that they are likely protostars undergoing mass-loss , and they are the best candidate as driving sources of the molecular outflows in the region .