Period Evolution of Very Long Period Variables: Looking for the Origins of the Circumstellar Rings around AGBs and PNe

Details Period Evolution of Very Long Period Variables: Looking for the Origins of the Circumstellar Rings around AGBs and PNe Period Evolution of Very Long Period Variables: Looking for the Origins of the Circumstellar Rings around AGBs and PNe

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aipc..804..156s&link_type=abstract

PLANETARY NEBULAE AS ASTRONOMICAL TOOLS: International Conference on Planetary Nebulae as Astronomical Tools. AIP Conference Pr

Astronomy and Astrophysics

Astronomy

Variable Stars, Circumstellar Matter, Giant Stars, Planetary Nebulae, Long-Period Variables And Semiregulars, Circumstellar Shells, Clouds, And Expanding Envelopes, Circumstellar Masers, Giant And Subgiant Stars, Planetary Nebulae

Scientific paper

Rings and shells observed around some Planetary Nebulae and post-AGB stars reflect a mass loss activity. A mass loss fluctuation can be related in part to the pulsational behaviour of AGB stars: Miras and Semiregulars. The observation of pulsational instabilities or oscillating periods could help us to better understand the causes and the evolution of these rings.

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