The carbon abundance of SdO-stars

Details The carbon abundance of SdO-stars The carbon abundance of SdO-stars

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980esasp.157..311g&link_type=abstract

The second European International Ultraviolet Explorer (IUE) Conference, held 26-28 March 1980 in Tübingen, West Germany. Edited

Astronomy and Astrophysics

Astronomy

11

Carbon, Iue, O Stars, Ultraviolet Astronomy, Abundance, Emission Spectra, Line Spectra, Radiative Transfer, Stellar Atmospheres, Thermodynamic Equilibrium

Scientific paper

High resolution International Ultraviolet Explorer spectra of the three SdO-stars HD 127493, HD 49798 and BD + 75 deg 325 were used to derive an upper limit for the carbon abundance. The C IV resonance line doublet at lambda 1548/1551 was analyzed by means of non-LTE line formation in the two level approximation. All three SdO-stars were found to be carbon-deficient by at least a factor of ten (relative to the Sun).

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