Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26as...84..259c&link_type=abstract
Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 84, no. 2, Aug. 1990, p. 259-375.
Astronomy and Astrophysics
Astrophysics
12
Astronomical Spectroscopy, B Stars, Stellar Spectra, Abundance, Iue, Line Spectra, Stellar Composition, Ultraviolet Spectra
Scientific paper
Copernicus and IUE high-resolution spectra of the sharp-lined normal star Iota Her (B3 IV) in the region 122.8-195.0 nm have been compared with an LTE synthetic spectrum computed by using a blanketed Kurucz (1979) model with parameters T(eff) = 17,180 K, log g = 3.43, and the new line lists of Kurucz (1988). A microturbulence eta = 0 km/s gives the best agreement between observed and computed lines. An underabundance of B, N, P and to a lesser exent of C and Al; an overabundance of Ga; and solar abundances for Mg, Si, and S are found. For the observed elements, lines are extracted which should have reliable atomic data. These lines, together with the plots of observed and computed spectra provided, should be helpful for abundance analyses from short-wavelength IUE spectra of other normal and peculiar B stars.
Bonifacio Piercarlo
Castelli Fabio
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