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机译:Surface abundances of ON stars
Univ Montpellier, LUPM, CNRS, F-34095 Montpellier, France;
Inst Astrofis Canarias, Tenerife 38200, Spain;
UCL, Dept Phys & Astron, London WC1E 6BT, EnglandKeele Univ, EPSAM, Astrophys Grp, Keele ST5 5BG, Staffs, EnglandSpace Telescope Sci Inst, Baltimore, MD 21218 USAAix Marseille Univ, CNRS, UMR 7326, LAM, F-13388 Marseille, FranceUniv La Serena, Dept Fis & Astron, La Serena, Chile;
stars: massive; stars: abundances; stars: evolution; stars: atmospheres;