Mass Loading of Stellar Winds in Hydrogen - Planetary Nebulae

Details Mass Loading of Stellar Winds in Hydrogen - Planetary Nebulae Mass Loading of Stellar Winds in Hydrogen - Planetary Nebulae

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.5864h&link_type=abstract

HST Proposal ID #5864

Physics

Hst Proposal Id #5864 Interstellar Medium

Scientific paper

HST observations of several members of the small group of PNe with hydrogen-poor ejecta have disclosed remarkable features created by the interaction of the fast winds of the central stars with the clumpy nebular gas. We can see how dense clumps of material, left within an expanding bubble blown by a stellar wind, are being photoevaporated by the stellar radiation and then swept back and accelerated by the wind. This accelerated material mixes with the wind, slowing it and increasing its density. Thus these rare PNe open a unique window on mass loading processes. We propose to extend WFPC2 imaging and GHRS spectroscopy of H-poor PNe in order to understand the interaction of a stellar wind with the inhomogeneous ambient medium, to understand the mass loading process, measure its strength, and find how nebular material is accelerated to high velocities by the stellar wind.

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