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pro vyhledávání: '"D'Odorico, V."'
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 351:976-988
We determined C, N and alpha-element relative abundances in the gas surrounding six QSOs at an average redshift of < z > ~ 2.4, by studying six narrow associated absorption systems in UVES high-resolution spectra. We found five systems with a metalli