Infrared Model Spectra for Evolving Red Supergiants

Details Infrared Model Spectra for Evolving Red Supergiants Infrared Model Spectra for Evolving Red Supergiants

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jass...10...25s&link_type=abstract

Journal of Astronomy and Space Sciences, vol.10, no 1, p.25-35.

Astronomy and Astrophysics

Astronomy

Scientific paper

The space and ground based infrared spectra of red supergiants are modeled and arranged in order of their evolutionary status with their theoretical model parameters. The chemical compositions of the dust shells around red supergiants are affected by the nuclear reaction and dredge-up processes of the cental stars. The processes are sensitively dependent on the initial mass, the initial chemical composition, and the evolutionary status. Miras, infrared carbon stars, and OH/IR stars have close link in their evolution in manu aspects, i,e., the chemical composition, the optical depths and the mass loss rates. The evolutionary tracks for the three classes of red supergiants on infrared two-color diagrams have been made from model calculations and IRAS observational data.

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