Multiple star formation and the dynamical evolution of B335.

We have detected a second high velocity bipolar flow in B335 located to the east of the core and its associated bipolar flow. The blue shifted component of this second flow overlaps the red shifted component of the first flow. This position where its central source should be located is not associated with any local enhancement in column density or IRAS source. The new flow is about three times older than the first flow and its energetics are somewhat smaller. The flows are aligned not only with each other but also with the long axis of the structure of B335 as outlined by CO maps and this suggests the influence of magnetic fields guiding the flow. This new bipolar flow is important for understanding the structure and evolution of B335 because it is located in what appears to be a diffuse envelope, well outside of the core, and is likely to be partly responsible for the structure of the envelope. From the multiple flows and the structure of the envelope we conclude that B335 is at the end of its starbearing life, rather than a young cloud beginning star formation, as previously supposed.