HST NICMOS Observation of Proto-Planetary Nebulae
  We report NICMOS wide-band and polarimetric observations of four proto-planetary nebulae. Molecular hydrogen emission is detected near the ends of the bipolar lobes of IRAS 17150-3224, which is evidence for the interaction of a fast, collimated outflow with the remnant of the asymptotic giant branch wind. 
K. Y. L. Su (1), S. Kwok (1), B. J. Hrivnak (2), R. Sahai (3) ((1)   University of Calgary, (2) Valparaiso University, (3) J...