Measuring the Mass-Loss Evolution at the Tip of the Asymptotic Giant Branch

Details Measuring the Mass-Loss Evolution at the Tip of the Asymptotic Giant Branch Measuring the Mass-Loss Evolution at the Tip of the Asymptotic Giant Branch

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..445..371s&link_type=abstract

Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants. Proceedings of a conference held at University Ca

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Planetary nebulae (PNe) form in the remains of the final stages of mass loss on the preceding asymptotic giant branch (AGB). In order to improve our understanding of stellar evolution, galactic chemical evolution, and the formation and evolution of PNe, it is important to measure the massive winds at the tip of the AGB. Here I present important concepts of our unique approach to measuring the AGB mass-loss evolution - using observations of faint halos around PNe - and relate it to the other methods that are in use. Both densities and kinematics can hereby be measured for several thousand of years of evolution. The gas is measured directly, so that supplementary models and assumptions are unnecessary.

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