Dust Grains in AGB Stars as Sources of Interstellar Dust

Details Dust Grains in AGB Stars as Sources of Interstellar Dust Dust Grains in AGB Stars as Sources of Interstellar Dust

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004jkas...37..289s&link_type=abstract

Journal of the Korean Astronomical Society, vol. 37, no. 4, pp. 289-294

Astronomy and Astrophysics

Astronomy

Stars: Agb And Post-Agb, Circumstellar Matter, Dust, Extinction, Infrared: Stars, Infrared: Ism

Scientific paper

The main sources of interstellar dust are believed to be dust envelopes around AGB stars. The outflowing envelopes around the long period pulsating variables are very suitable place for massive dust formation. Oxygen-rich silicate dust grains or carbon-rich dust grains form in the envelopes around AGB stars depending on the chemical composition of the stellar surface. The dust grains expelled from AGB stars get mixed up and go through some physical and chemical changes in interstellar medium. There are similarities and differences between interstellar dust and dust grains in AGB stars. The mass cycle in the Galaxy may be best manifested by the fact that the dust grains at various regions have many similarities and understandable differences.

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