Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996hst..prop.6347b&link_type=abstract
HST Proposal ID #6347
Astronomy and Astrophysics
Astrophysics
Hst Proposal Id #6347 Interstellar Medium
Scientific paper
We propose a snapshot survey for narrow jets in planetary nebulae {PNe}, through narrow-band HAlpha and N II imaging with the WFPC2. The presence of such jets in a substantial fraction of PNe is strongly suggested by a growing body of circumstantial evidence based on ground-based imaging and spectroscopy. Jets are not expected in the standard interacting-wind model for the PN formation, and require a radically new solution, such as the presence of an accretion disk in a binary system. The origin of jets in PNe is an intriguing and important astrophysical problem. The most recent images of NGC 6543 with the HST WFPC2 revealed, for the first time, a highly-collimated jet in a PN. This unexpected discovery demonstrates the HST ability to detect jets in PNe. A snaphot survey of a sample of bright PNe suspected of harboring jets would provide us with fundamental information on jets in PNe.
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