Investigating the Dust Chemistry in Pre-Planetary Nebulae

Details Investigating the Dust Chemistry in Pre-Planetary Nebulae Investigating the Dust Chemistry in Pre-Planetary Nebulae

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50116f&link_type=abstract

Spitzer Proposal ID #50116

Physics

Scientific paper

We propose to extend our study of young planetary nebulae/transition objects with IRAC and IRS to 1) confirm the result of the previous observations of a high (50%) incidence of dual-dust chemistry in these objects, and 2) examine a sample of objects at an earlier evolutionary state to determine the point at which the emission features arise in the shells around these objects. These data, along with ground-based high spatial resolution imaging, will provide information on the mechanisms that lead to their asymmetric shapes.

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