Physics
Scientific paper
Jul 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hst..prop.9430t&link_type=abstract
HST Proposal ID #9430
Physics
Hst Proposal Id #9430
Scientific paper
Recent CO observations of several planetary nebulae {PN} suggest that collimated outflows may play a crucial role in the early shaping of these objects. The idea that jets may be the primary driver of the early development of some PN represents a major shift in thinking about the evolution of these objects. In the past, the role of jets has been considered secondary to the interacting winds scenario, the standard model of PN formation. We propose to use the unique capabilities of HST to access the importance of collimated outflows in the development of the young PN PK166-06D1 {AFGL 618}. We have chosen PK166-06D1 for this study because it is in the early stages of PN formation - the time during which jets would have the greatest impact on PN development. We propose to use STIS, ACS, and NICMOS to characterize the collimated outflows present in PK166- 06D1. The goals of this study are: 1} to characterize the interaction of the jets with the surrounding AGB shell by determining the physical conditions in the outflows and the interaction regions, 2} to determine the structure of the surrounding AGB shell using deep optical imaging, 3} to investigate the origin of the collimated outflows by examining the central regions of the nebula. We require both the stability and high spatial resolution capabilities of HST for this project because we will be investigating the detailed structure of compact regions {< 1"}.
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