Interaction of the Cepheus a Molecular Outflow with the Surrounding Cloud

Abstract

We present new high-angular (~ 3″) and spectral (~ 0.3 km s^-1) resolution VLA observations of the (J,K) = (1,1) and (2,2) ammonia lines toward Cepheus A. Our preliminary results indicate a triple way interaction of the high-velocity outflow with the ambient molecular cloud: heating at the edges of the NH₃ clumps, leaking of the molecular outflow gas among the different high-density condensations, producing filamentary structures in their edges, and a strong incidence on the kinematics of the region. No conclusive signs of keplerian motions in the highdensity molecular gas are found at 0.01 pc scales around the star formation activity center.