Entrainment by the Jet in HH 47
Raymond, J. (CfA), Morse, J. (CASA), Hartigan, P. (Rice), Curiel, S. (CfA) and Heathcote, S. (CTIO)
Fabry-Perot images of the HH 47 optical jet show that the velocity
decreases from the center toward the edges which is interpreted as
evidence for entrainment. Those images can be used to investigate the
rate of entrainment required to account for the observed luminosity.
Entrainment along the jet can account for only small fractions of the
jet mass and the molecular outflow seen in CO. We compare the density,
excitation, and velocity structure of the jet with the predictions of
viscous entrainment models and models of entrainment by expulsion of jet
material by internal shocks, and find that either type of model can
explain the general features.
Journal of publication: Ap J 434, 232, 1995.