Wolf-Rayet star parameters from spectral analyses
W.-R. Hamann1, G. Gräfener1 and L. Koesterke 2
The Potsdam Non-LTE code for expanding atmospheres, which accounts for clumping and iron-line blanketing, has been used to establish a grid of model atmospheres for WC stars. A parameter degeneracy is discovered for early-type WC models which do not depend on the "stellar temperature". 15 galactic WC4-7 stars are analyzed, showing a very uniform carbon abundance (He:C=55:40) with only few exceptions.
The full article is available as PostScript file via anonymous ftp.
user: anonymous or ftp; Password: your e-mail address;
file: pub/wrhamann/lanzarote.ps (255kB uncompressed) or lanzarote.ps.gz (77kB compressed).