Heavy elements in the 2000-3000 A range of four AP stars

Details Heavy elements in the 2000-3000 A range of four AP stars Heavy elements in the 2000-3000 A range of four AP stars

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...224..162f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 224, no. 1-2, Oct. 1989, p. 162-170.

Astronomy and Astrophysics

Astrophysics

8

A Stars, Peculiar Stars, Stellar Composition, Stellar Spectra, Ultraviolet Spectra, Heavy Elements, Nonequilibrium Thermodynamics

Scientific paper

The long wavelength range of IUE has been examined in a search for heavy elements in four chemically peculiar stars of CP2 subgroup. Pb II 2203.53 appears to be present and a lead abundance higher than the solar one is derived for HD 188041 and HD 201601. No firm indication of the presence of Th II and U II can be established in the four program stars, while a great overabundance of these two elements had been previously derived by Severny and Liubimkov (1986) from the analysis of the same spectral range in 73 Dra, a CP star that belongs to the Sr-Cr-Eu subgroup.

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