THE STRUCTURE AND DYNAMICS OF NGC-1333 FROM (CO)-C-13 AND (CO)-O-18 OBSERVATIONS

This paper presents a study of a dense molecular region, NGC 1333, and the relationship of the embedded infrared sources and young stellar o bjects to the structure of its molecular core, We use (CO)-C-13 and (C O)-O-18 J=1-->0 and J=2-->1 observations, along with those of CS J=2-- >1 to characterize the structure of the core, calculate densities and masses. We find from our (CO)-O-18 maps that the core consists of a ca vity surrounded by a compressed shell of gas. Many of the infrared and outflow sources in NGC 1333 are located in the cavity. The winds from IRAS2, SSV13 and several other sources appear to provide the energy t o sweep up the material, expand the cavity and compress the shell. We suggest that sequential star formation is taking place in NGC 1333 wit h SSV13 initiating this scenario. Several massive (similar to 20-40 M. ) condensations in the shell are potential sites for the next generati on of star formation in NGC 1333.