Mass loss from carbon stars

Details Mass loss from carbon stars Mass loss from carbon stars

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...303..327j&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 303, April 1, 1986, p. 327-332. NASA-NSF-supported research.

Astronomy and Astrophysics

Astronomy

193

Carbon Stars, Chemical Composition, Infrared Spectra, Stellar Envelopes, Stellar Mass Ejection, Variable Stars, Cosmic Dust, Infrared Astronomy Satellite, Interstellar Gas, Optical Thickness, Stellar Evolution

Scientific paper

The present consideration of the circumstellar envelopes around carbon stars on the basis of IRAS data indicates that the grains are composed of amorphous carbon rather than graphite, with an extrapolated outflowing material opacity that is large enough for the radiation pressure on the grains to drive the matter to infinity. At least 10 percent of the carbon stars have a mass loss rate that has changed by a factor of 2 during the past 1000 years. The stars that are losing large amounts of mass are generally long period variables. All these results are consistent with a two-step process of mass loss from most of the stars with substantial mass-outflow rates.

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