Planetary Nebular Structure (WF/PC-03) Cycle 1

Details Planetary Nebular Structure (WF/PC-03) Cycle 1 Planetary Nebular Structure (WF/PC-03) Cycle 1

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991hst..prop.3190w&link_type=abstract

HST Proposal ID #3190

Other

Hst Proposal Id #3190

Scientific paper

Observations of planetary nebulae utilizing the WF/PC are based upon the high angular resolution. Structure at the level of E+14 cm is seen in only one planetary NGC7293, Helix nebula. It is in the size range from E+14 to E+15 cm that the origin of long lived condensation is expected. Are the features seen in the Helix common to most planetaries? Do these condensations result in shadowing that can explain the ionization structure? The other objective of this program is to repeat the measurements on a few years baseline in order to study the temporal variations of well defined condensation. This may provide distance determinations as well as dynamic information.

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