On the Nature of Carbon Stars with the Promise of FIRST

Details On the Nature of Carbon Stars with the Promise of FIRST On the Nature of Carbon Stars with the Promise of FIRST

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.460..377c&link_type=abstract

The Promise of the Herschel Space Observatory. Eds. G.L. Pilbratt, J. Cernicharo, A.M. Heras, T. Prusti, & R. Harris. ESA-SP 460

Physics

Stars: Evolution Of, Stars: Carbon, Stars: Circumstellar Matter, Stars: Mass Loss, Infrared Radiation

Scientific paper

A set of self-consistent model calculations of the evolution from visual carbon stars to infrared carbon stars is presented and reviewed. A two-shell system model, the interrupted mass-loss model, has been developed. A revised mass-loss formula, which describes the gradually increasing mass-loss rate at the early stage of the infrared carbon stars, is introduced to simulate the effect of the newly-forming SiC shell. The model tracks successfully explain a `C'-shaped distribution of carbon stars in the colour-colour diagram. The existence of these transition objects with infrared properties intermediate between visual and infrared carbon stars, lends further support to the idea of an evolutionary link between visual and infrared carbon stars. FIRST mission will be played an important role for the detailed study of the nature of carbon stars.

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