Bibcode
García-Lario, Pedro; Manchado, A.; Ulla, Ana; Manteiga, Minia; Suárez Fernández, Olga
Referencia bibliográfica
Asymmetrical Planetary Nebulae II: From Origins to Microstructures, ASP Conference Series, Vol. 199. Edited by J. H. Kastner, N. Soker, and S. Rappaport. ISBN: 1-58381-026-9, 2000, p. 391
Fecha de publicación:
0
2000
Número de citas
1
Número de citas referidas
1
Descripción
We present combined information on the optical morphology derived from
HST images and the infrared properties of the dust in the circumstellar
envelope derived from ISO SWS+LWS spectra for two proto-planetary
nebulae (PPN) and two young planetary nebulae (PNe). The short phase
from the AGB to the PNe stage is characterized by several episodes of
strong mass loss which might have a strong influence on the shape and
chemical abundances of the outer envelope. Some of these transition
objects are presented and briefly discussed here.