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An interstellar dust component rich in 12C

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Abstract

Chondritic meteorites contain grains which condensed in circumstellar environments and carry unusual isotope signatures1 providing clues to the location in which grain formation took place. Isotope measurements on grains that are composed entirely of carbon or carbon compounds have, up to now, given compositions either close to typical Solar System values or enriched in 13C (refs 2–5). Despite the existence of astrophysical environments where 12C production predominates, highly 12C-enriched carbon com-ponents in meteorites are uncommon. Here we report the results of an analysis of an acid-resistant residue from the Allende (CV3) meteorite1,6, extensively combusted in oxygen at low temperatures (<500 °C) to remove isotopically normal carbon, which revealed the presence of a small amount (<0.1 p.p.m.) of carbon with a 12C/13C ratio close to 120, well above the value of 89 ± 3 found in terrestrial samples or bulk meteorites. This component is denoted Cλ. Stellar evolutionary processes favour lowering of the 12C/13C ratio; hence Cλ, which has a combustion temperature consistent with graphite, might be a primitive type of interstellar material.

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References

  1. Swart, P. K., Grady, M. M., Pillinger, C. T., Lewis, R. S. & Anders, E. Science 220, 406–410 (1983).

    Article  ADS  CAS  Google Scholar 

  2. Yang, J. & Epstein, S. Nature 311, 544–547 (1984).

    Article  ADS  CAS  Google Scholar 

  3. Tang, M. et al. Geochim. cosmochim. Acta 52, 1221–1234 (1988).

    Article  ADS  Google Scholar 

  4. McGarvie, D. W., Wright, I. P., Grady, M. M., Pillinger, C. T. & Gibson, E. K. J. Mem. natn. Inst. Polar Res. spec. Iss. 46, 179–195 (1987).

    ADS  Google Scholar 

  5. Zinner, E., Tang, M. & Anders, E. Nature 330, 730–732 (1987).

    Article  ADS  CAS  Google Scholar 

  6. Ott, U., Mack, R. & Chang, S. Geochim. cosmochim. Acta 45, 1751–1788 (1981).

    Article  ADS  CAS  Google Scholar 

  7. Lewis, R. S., Tang, M., Wacker, J. F., Anders, E. & Steel, E. Nature 326, 160–162 (1987).

    Article  ADS  CAS  Google Scholar 

  8. Lewis, R. S., Anders, E., Wright, I. P., Norris, S. J. & Pillinger, C. T. Nature 305, 767–771 (1983).

    Article  ADS  CAS  Google Scholar 

  9. Ash, R. D. et al. Meleoritics 22, 319 (1987).

    ADS  Google Scholar 

  10. Carr, R. H., Wright, I. P., Joines, A. T. & Pillinger, C. T. J. Phys. E. Sci. Instrum. 19, 798–808 (1986).

    Article  ADS  CAS  Google Scholar 

  11. Swart, P. K., Grady, M. M. & Pillinger, C. T. Meteoritics 18, 137–154 (1983).

    Article  ADS  CAS  Google Scholar 

  12. Swart, P. K., Grady, M. M. & Pillinger, C. T. Nature 297, 381–383 (1982).

    Article  ADS  CAS  Google Scholar 

  13. Ash, R. D. et al. Lunar planet. Sci. XIX, 15–16 (1988).

    ADS  Google Scholar 

  14. Zinner, E. & Epstein, S. Earth planet. Sci. Lett. 84, 359–368 (1987).

    Article  ADS  CAS  Google Scholar 

  15. Niederer, F. R., Eberhardt, P. & Geiss, J. Meteoritics 20, 716–718 (1985).

    ADS  Google Scholar 

  16. Grossman, L., Fahey, A. J. & Zinner, E. Lunar planet. Sci. XIX, 435–436 (1988).

    ADS  Google Scholar 

  17. McGarvie, D. W., Grady, M. M., Gibson, E. K. Jr & Pillinger, C. T. Meteoritics 20, 708 (1985).

    ADS  Google Scholar 

  18. Palme, H. & Wark, D. A. Lunar planet. Sci. XIX, 879–898 (1988).

    Google Scholar 

  19. Dearborn, D. S. P. in CNO Isotopes in Astrophysics (IAU Symp. 67) (ed. Audouze, J.) 39–44 (Reidel, Dordrecht, 1977).

    Book  Google Scholar 

  20. Lambert, D. L., Gustafsson, B., Eriksson, K. & Hinkle, K. H. Astrophys. J. 62, 373–425 (1986).

    Article  ADS  CAS  Google Scholar 

  21. Wannier, P. G. A. Rev. Astr. Astrophys. 18, 399 (1980).

    Article  ADS  CAS  Google Scholar 

  22. Knapp, G. R. & Chang, K. M. Astrophys. J. 293, 281–287 (1985).

    Article  ADS  CAS  Google Scholar 

  23. Clayton, D. D. Proc. Lunar planet. Sci. 12B, 1781–1801 (1981).

    ADS  Google Scholar 

  24. Truran, J. W. in CNO Isotopes in Astrophysics (IAU Symp 67) (ed. Audouze, J.) 145–154 (Reidel, Dordrecht, 1977).

    Book  Google Scholar 

  25. Larimer, J. W. & Bartholomay, M. Geochim. cosmochim. Acta 43, 1455–1466 (1979).

    Article  ADS  CAS  Google Scholar 

  26. Clayton, R. N. & Mayeda, T. K. Earth planet. Sci. Lett. 67, 157–161 (1984).

    Article  ADS  Google Scholar 

  27. McKeegan, K. D. Science 237, 1468–1471 (1987).

    Article  ADS  CAS  Google Scholar 

  28. Clayton, R. N., Onuma, N., Grossman, L. & Mayeda, T. K. Earth planet. Sci. Lett. 34, 209–224 (1977).

    Article  ADS  CAS  Google Scholar 

  29. Zinner, E. & Tang, M. Lunar planet. Sci. XIX, 1323–1324 (1988).

    ADS  Google Scholar 

  30. Cameron, A. G. W. & Truran, J. W. Icarus 30, 447–461 (1977).

    Article  ADS  CAS  Google Scholar 

  31. Vanysek, V. & Rahe, J. Moon Planets 18, 441–446 (1978).

    Article  ADS  CAS  Google Scholar 

  32. Langer, W. D., Graedel, T. E., Frerking, M. A. & Armentsout, P. B., Astrophys. J. 277, 581–604 (1984).

    Article  ADS  CAS  Google Scholar 

  33. Hawkins, I. & Jura, M. Astrophys. J. 317, 926–950 (1987).

    Article  ADS  CAS  Google Scholar 

  34. Penzias, A. A. Astrophys. J. 273, 195–201 (1983).

    Article  ADS  CAS  Google Scholar 

  35. Ash, R. D., Arden, J. W., Grady, M. M., Wright, I. P. & Pillinger, C. T. Meteoritics (in the press).

  36. Tang, M. & Anders, E. Geochim. cosmochim. Acta 52, 1235–1244 (1988).

    Article  ADS  Google Scholar 

  37. Grady, M. M., Wright, I. P., Swart, P. K. & Pillinger, C. T. Geochim. cosmochim. Acta 49, 903–915 (1985).

    Article  ADS  CAS  Google Scholar 

  38. Clayton, D. D. in Chondrules and their origins (ed. King, E. A.) (Lunar and Planetary Institute, Houston, 1983).

    Google Scholar 

  39. Anders, E., Tang, M. & Zinner, E. in Interstellar Dust (IAU) Symp. 135, 9–10 (1988).

    Google Scholar 

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Author notes

  1. J. W. Arden: Department of Geology and Mineralogy, University of Oxford, Parks Road, Oxford OX1 3PR, UK

Authors and Affiliations

  1. Planetary Sciences Unit, Department of Earth Sciences, The Open University, Walton Hall, Milton Keynes, MK7 6AA, UK

    R. D. Ash, J. W. Arden, M. M. Grady, I. P. Wright & C. T. Pillinger

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  1. R. D. Ash
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  2. J. W. Arden
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  3. M. M. Grady
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  4. I. P. Wright
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  5. C. T. Pillinger
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Ash, R., Arden, J., Grady, M. et al. An interstellar dust component rich in 12C. Nature 336, 228–230 (1988). https://doi.org/10.1038/336228a0

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