Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978ap%26ss..54..343d&link_type=abstract
Astrophysics and Space Science, vol. 54, no. 2, Apr. 1978, p. 343-353.
Astronomy and Astrophysics
Astrophysics
Abundance, Binary Stars, Main Sequence Stars, Spectrum Analysis, Stellar Spectrophotometry, Td-1 Satellite, Ultraviolet Spectrophotometers, Chemical Composition, Chromium, Computer Programs, Fraunhofer Lines, Iron, Photosphere, Spectral Resolution, Stellar Temperature
Scientific paper
Ultraviolet spectra of a CMi and a Cen A taken with moderate spectral resolution (approx. 1.8 A) are used to analyse whether a determination of stellar chemical abundances of Fe and Cr and of the photospheric parameters is possible. For a CMi, for which good spectral data are available, we find Teff 7660 ± 110 K; log g0ff = 3.05 ± 0.1. Further, L~ log e(Fe) = -0.06 ± 0.09; ~ log E(Cr) = -0.01 ± 0.09 with regard to `standard' (solar) abundances. For a Cen A the resulting data - particularly the photospheric ones - are less certain, but it seems that the Fe abundance may be smaller than the `standard' value
de Jager Cornelis
Kamperman Th. M.
Neven L.
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