Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003pasj...55.1133k&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.55, No.6, pp. 1133-1139
Astronomy and Astrophysics
Astronomy
11
Stars: Abundances, Stars: Chemically Peculiar, Stars: Individual (Hr 6958)
Scientific paper
The elemental composition of the chemically peculiar star HR6958 has been studied with emphasis on doubly ionized rare earths. A visual region spectrum taken with the ELODIE spectrograph at the Haute-Provence Observatory was analyzed. A total of 40 elements including Pr III, Nd III, Tb III, Dy III, Ho III, and Er III were identified and their abundances computed. He is deficient by over 1dex with respect to the Sun; the light elements (C-Ca), except for Si, have solar abundances; the iron group elements (Sc-Fe) are overabundant by 1 dex to 2dex, with Ti and Cr highly overabundant; and the lanthanide rare earths are overabundant by 3dex to 4dex. This abundance pattern with He deficient, Si, Ti, Cr, Sr, and Pr overabundant indicates that HR6958 is a member of Si stars.
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