A flux-limited sample of galactic carbon stars

Details A flux-limited sample of galactic carbon stars A flux-limited sample of galactic carbon stars

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...253..150g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 253, no. 1, Jan. 1992, p. 150-172. Research supported by ASTRON and NWO.

Astronomy and Astrophysics

Astronomy

79

Carbon Stars, Infrared Astronomy, Infrared Stars, Stellar Evolution, Stellar Mass Ejection, Stellar Radiation, Bolometers, Correction, Flux Density, Infrared Astronomy Satellite

Scientific paper

An IR-complete study of bright carbon stars which contains all 109 such stars with S12 contents of more than 100 Jy in the IRAS PSC is presently studied after division into five groups, depending on IR properties. Using the average bolometric corrections for each group, the IR-complete sample is transformed into a volume-complete one. Relative timescales are derived from the calculated space densities of carbon stars in each group. Assuming a 20,000-yr lifetime for group II stars from model calculations, a total lifetime for the carbon star phase of about 26,000 years is derived which is uncertain to a factor of 2. The total mass loss during the carbon star phase is only 0.04 solar masses, uncertain to a factor of 5.

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