Evolving Dust Chemistry in Post-AGB Stars

Details Evolving Dust Chemistry in Post-AGB Stars Evolving Dust Chemistry in Post-AGB Stars

May 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21840704h&link_type=abstract

American Astronomical Society, AAS Meeting #218, #407.04; Bulletin of the American Astronomical Society, Vol. 43, 2011

Astronomy and Astrophysics

Astronomy

Scientific paper

Intermediate-mass stars form dense and dynamic circumstellar envelopes at the end of their stellar lives. These envelopes can be dramatically asymmetric, with dusty waist formations and wind-blown polar cavities. Several IR spectral features are predicted to evolve as the post-AGB phase unfolds, many of which can be used as tracers of circumstellar structure. I will present recent investigations of this phenomenon using 5-40 micron spectra from Spitzer's Infrared Spectrograph (IRS).

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