Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ap%26ss..76..341b&link_type=abstract
Astrophysics and Space Science, vol. 76, no. 2, May 1981, p. 341-349.
Astronomy and Astrophysics
Astrophysics
5
Carbon Stars, Stellar Envelopes, Stellar Evolution, Stellar Spectrophotometry, Cosmic Dust, Stellar Magnitude, Stellar Mass Ejection, Stellar Temperature, Tables (Data), Weight Measurement
Scientific paper
Optically bright and very cool AFGL carbon stars have been analyzed in order to find a common evolutionary sequence according to indications in this sense derived from papers which have treated only the first or the second group of stars separately. An apparent discrepancy existing between the stellar parameters has been overcome following an inverse procedure which provides these values by means of the shell parameters. The results seem to indicate that AFGL stars, whose variability nature is still unknown, should be Mira or Mira-like according to the values of their dust shell temperatures. Dust shell masses have been estimated for both samples of stars finding an inverse dependence with the effective temperature, Md T*9'. This may be interpreted in terms of evolutionary sequence in the sense that the cooler the stars the larger their shell masses
Blanco Ariel
Borghesi A.
Bussoletti Ezio
Rossi Luca
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