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THE ORIGINAL ENVIRONMENT OF THE SOLAR SYSTEM INFERRED FROM THE OXYGEN ISOTOPE ANOMALIES

Lee, Jeong-Eun   (Department of Astronomy and Space Science, Sejong UniversityUU0000792  ); Bergin, Edwin A.   (Department of Astronomy, The University of MichiganUU0013882  ); Lyons, James R.   (Institute of Geophysics and Planetary Physics, Department of Earth and Space Sciences, University of CaliforniaCC0069995  );
  • 초록

    The original environment of the solar system can be inferred by studying the oxygen isotope ratios in the Sun as well as in primitive meteorites and comets. The oxygen isotopic fractionation measured in primitive meteorites is mass-independent, which can be explained by the isotopic-selective photodissociation of CO. The isotopic-selective photodissociation model in a collapsing cloud by Lee et al. (2007) imply the birth of the Sun in a stellar cluster with an enhanced radiation field, which is consistent with the inferred presence of $^{60}Fe$ .


  • 주제어

    ISM:astrochemistry .   stars:formation .   solar system:formation.  

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