AGB mass-loss and recycling

Details AGB mass-loss and recycling AGB mass-loss and recycling

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.577..217l&link_type=abstract

In: Proceedings of the dusty and molecular universe: a prelude to Herschel and ALMA, 27-29 October 2004, Paris, France. Ed. by A

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Agb And Post-Agb, Circumstellar Matter, Mass-Loss

Scientific paper

Mass-loss from AGB stars is a highly variable process which renders the determination of its rate and of its balance as a function of the stars' evolutionary stage a difficult task. Several diagnostic tools can be considered. The most commonly used are the rotational lines of molecules, like CO or SiO, and the emission by dust at infrared wavelengths. However they are sensitive to only a part of the material, sometimes in limited regions of the circumstellar shells. Other tracers, which may be very useful like lines of HI and H2, should also be considered in order to get a more representative picture of these shells which extend out to the Interstellar Medium. High spatial and spectral resolution, large fields of view and high dynamical range are all important to reveal the 3-D structure of the outflows and to identify the relevant driving process(es) involved, and finally to determine the mass-loss history for individual sources and the contribution of the AGB star population to the recycling of matter.

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