Europium Isotopic Abundances in Very Metal Poor Stars
نویسندگان
چکیده
منابع مشابه
Europium Isotopic Abundances in Very Metal-poor Stars
Europium isotopic abundance fractions are reported for the very metal-poor, neutron-capture-rich giant stars CS 22892-052, HD 115444, and BD +17◦3248. The abundance fractions, derived from analysis of several strong Eu II lines appearing in high-resolution spectra of these stars, are in excellent agreement with each other and with their values in the Solar System: fr(Eu)≃ fr(Eu) ≃ 0.5. Detailed...
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1 Max Plack Institute for Astrophysics, Karl-Schwarzschild-Strasse 1, 857 41 Garching bei München, Germany 2 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, United Kingdom e-mail: [email protected] 3 Departamento de Astronomia do IAG/USP, Universidade de São Paulo, Rua do Matão 1226, Cidade Universitària, 05508-900 São Paulo, SP, Brazil 4 Research School o...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2002
ISSN: 0004-637X
DOI: 10.1086/339471