Mass loss and carbon abundance in WC stars

Details Mass loss and carbon abundance in WC stars Mass loss and carbon abundance in WC stars

Jul 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96..365d&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, July 1988, p. 365-370.

Astronomy and Astrophysics

Astrophysics

20

Abundance, Carbon, Mass Transfer, Stellar Mass Ejection, Stellar Spectra, Wolf-Rayet Stars, Balmer Series, Stellar Composition, Stellar Evolution

Scientific paper

Spectroscopic observations of eight WC stars, obtained at 360-590 and 460-700 nm with a grating spectrograph and a vidicon detector on the 1.6-m reflector at the Brazilian National Astrophysical Observatory in May 1985, are reported and analyzed, using a simple C-He stellar-wind model to calculate the mass-loss rates. The data are presented in tables and a sample spectrum and discussed in detail. The C/He mass ratio is found to range between 0.5 and 3.3, tending to be higher in more evolved stars. The mean mass-loss rate for seven normal-luminosity WC stars is given as 0.000072 + or - 0.000024 solar mass/yr, while the corresponding value for the overluminous star HD 97152 is 0.00015 solar mass/yr.

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