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The temperature of interstellar iron grains

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Abstract

In order for catalytic reactions to occur in interstellar dust clouds, it is necessary for the temperature of the grains to be about an order of magnitude hotter than usually calculated for grains of dielectric materials. However, transition metal (e.g., iron) grains should be fairly abundant, and because they absorb strongly in the visible and ultraviolet regions of the interstellar radiation field, they have equilibrium temperatures ∼ 133 K. This was determined by a new method which utilizes ‘Semi-Empirical’ free electron theory parameters in the infrared, coupled with a reiteration scheme which takes into consideration the change of conductivity of the iron with temperature.

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References

  1. Anders, E., Hayatsu, R., and Studier, M. H.: 1973,Science 182, 781.

  2. Anders, E., Hayatsu, R., and Studier, M. H.: 1974,Astrophys. J. 192, L101.

  3. Borg, K.: 1967,Acta Univ. Lund II, No. 29.

  4. Cameron, A. G. W.: 1973,Space Sci. Rev. 15, 121.

  5. Chornet, E. and Coughlin, R. W.: 1972,J. Catalysis 27, 246.

  6. Duley, W. W.: 1973,Astrophys. Space Sci. 23, 43.

  7. Gail, H.-P. and Sedlmayr, E.: 1975,Astron. Astrophys. 43, 17.

  8. Hayward, D. O. and Trapnell, B. M. W.: 1964,Chemisorption, 2nd edn, Washington, Butterworths.

  9. Kittel, C.: 1968,Introduction to Solid State Physics, John Wiley.

  10. Lenham, A. P. and Treherne, D. M.: 1966, in F. Abeles (ed.),Optical Properties and Electronic Structure of Metals and Alloys, Amsterdam, North-Holland Publ. Co.

  11. Purcell, E. M.: 1976,Astrophys. J. 206, 685.

  12. Roberts, S.: 1960,Phys. Rev. 118, 1509.

  13. Sandell, G. and Mattila, K.: 1975,Astron. Astrophys. 42, 357.

  14. Sokolov, A. V.: 1967,Optical Properties of Metals, American Elsevier Publ. Co.

  15. Spitzer, L., Jr.: 1968,Diffuse Matter in Space, Interscience.

  16. Tabak, R. G.: 1976, Ph.D. thesis, The Ohio State University, Columbus, Ohio.

  17. Van de Hulst, H. C.: 1946,Rech. Astron. Obs. Utrecht XI, Part I.

  18. Van de Hulst, H. C.: 1949,Rech. Astron. Obs. Utrecht XI, Part II.

  19. Van de Hulst, H. C.: 1957,Light Scattering by Small Particles, John Wiley and Sons, New York.

  20. Werner, M. W. and Salpeter, E. E.: 1969,Monthly Notices Roy. Astron. Soc. 145, 249.

  21. Wickramasinghe, N. C.: 1967,Interstellar Grains, London, Chapman and Hall.

  22. Wickramasinghe, N. C.: 1973,Light Scattering Functions for Small Particles, Chapman and Hall and John Wiley, London and New York.

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Tabak, R.G. The temperature of interstellar iron grains. Astrophys Space Sci 49, 41–46 (1977). https://doi.org/10.1007/BF00647075

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Keywords

  • Radiation
  • Iron
  • Dust
  • Free Electron
  • Catalytic Reaction