Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.234..325b&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 234, Sept. 15, 1988, p. 325-333.
Astronomy and Astrophysics
Astronomy
18
B Stars, Carbon Stars, Charge Coupled Devices, Main Sequence Stars, Stellar Rotation, Abundance, High Resolution, Line Spectra, Spectral Resolution, Thermodynamic Equilibrium
Scientific paper
Observations of the C II λλ6578, 6583 Å lines at high spectral resolution in slowly rotating B-type stars have been made and evaluated as alternative indicators of stellar carbon abundance to the λ4267 Å diagnostic. Equivalent widths for these lines are presented for 11 near main-sequence stars with Teff in the range 15000 - 33000K. For the majority of the stars in the sample with a Teff of 19000 - 24000K a consistent carbon abundance of 8.2±0.2 dex is derived. This is significantly greater than that more commonly derived from the spectral diagnostic C II λ4267 Å line in B-type stars (7.65±0.2 dex).
Barnett E. W.
McKeith Conal D.
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