Astrophysics and Space Science

, Volume 45, Issue 2, pp 261–267 | Cite as

Desorption of molecules from interstellar grains and the heating of dust clouds

  • W. W. Duley


Temperature fluctuations induced in very small (r≃10−3 μ) interstellar grains by the absorption of photons from the ultra-violet radiation field or by energy released on molecule formation are shown to lead to significant gas heating due to thermal desorption of condensed atoms or molecules. For clouds with N(H)=1–10×1020 cm−2, heating rates due to this process are comparable to direct heating by cosmic rays or grain photoelectrons.


Radiation Dust Heating Rate Temperature Fluctuation Radiation Field 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Allen, M. and Robinson, G. W.: 1975,Astrophys. J. 195, 81.Google Scholar
  2. Dalgarno, A. and Oppenheimer, M.: 1974,Astrophys. J. 192, 597.Google Scholar
  3. Duley, W. W.: 1973,Astrophys. Space Sci. 23, 43.Google Scholar
  4. Duley, W. W.: 1976,Astrophys. Space Sci. 45, 235.Google Scholar
  5. Glassgold, A. E. and Langer, W. D.: 1974,Astrophys. J. 193, 73.Google Scholar
  6. Habing, H. J.: 1968,Bull. Astr. Inst. Netherlands 19, 421.Google Scholar
  7. Hollenbach, D. J. and Salpeter, E. E.: 1970,J. Chem. Phys. 53, 79.Google Scholar
  8. Hollenbach, D. J. and Salpeter, E. E.: 1971,Astrophys. J. 163, 155.Google Scholar
  9. Lee, T. J.: 1972,Nature Phys. Sci. 237, 99.Google Scholar
  10. Leung, C. M.: 1975,Astrophys. J. 199, 340.Google Scholar
  11. Purcell, E. M.: 1976,Astrophys. J. 206, 685.Google Scholar
  12. Spitzer, L. and Cochran, W. D.: 1973,Astrophys. J. 186, L23.Google Scholar
  13. Spitzer, L., Drake, J. F., Jenkins, E. B., Morton, D. C., Rogerson, J. B., and York, D. G.: 1973,Astrophys. J. 181, L116.Google Scholar
  14. Spitzer, L. and Jenkins, E. B.: 1975, in G. R. Burbidge, D. Layzer, and J. G. Phillips (eds.),Annual Review of Astronomy and Astrophysics, Vol. 13, p. 133.Google Scholar
  15. Watson, W. D.: 1972,Astrophys. J. 176, 103.Google Scholar

Copyright information

© D. Reidel Publishing Company 1976

Authors and Affiliations

  • W. W. Duley
    • 1
  1. 1.Physics DepartmentYork UniversityTorontoCanada

Personalised recommendations