2 papers
astro-ph2007
Jets and Tori in Proto-Planetary Nebulae: Observations vs. Theory
P. J. Huggins
We report on a study of the time sequence for the appearance of high-velocity jets and equatorial tori in the transition of stars from the asymptotic giant branch to the planetary…
astro-ph2000
Molecules as Tracers of PN Structure
P. J. Huggins
Molecular gas plays an important role in the structure of planetary nebulae: it is a major component of the equatorial tori of bipolar nebulae, it forms the cores of globules and r…