Grain Charging in H II Regions

  • A. F. M. Moorwood
  • B. Feuerbacher
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 55)


Equilibrium grain potentials have been calculated as a function of radial position and for a wide range of electron densities in H II regions ionized by stars of spectral type O5 and B0. Results are presented for both graphite (low yield photoemitter) and aluminium oxide (high yield photoemitter) for which laboratory photoemission data has been obtained. The results for aluminium oxide should approximate the behaviour expected of dielectric grains — e.g., silicates which may be present in H II regions. The importance of charging is discussed in relation to the growth and motion of grains in these regions.


Radiation Pressure Spectral Type Dust Absorption Central Star Stellar Parameter 
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. Aitken, D. K. and Jones, B.: 1973, Astrophys. J. 184, 127.CrossRefADSGoogle Scholar
  2. Davidson, K.: 1970, Astrophys. Space Sci. 6, 422.CrossRefADSGoogle Scholar
  3. Emerson, J. P., Jennings, R. E., and Moorwood, A. F. M.: 1973, Astrophys. J. 184, 401.CrossRefADSGoogle Scholar
  4. Feuerbacher, B. and Fitton, B.: 1972, J. Appl. Phys. 43, 1563.CrossRefADSGoogle Scholar
  5. Feuerbacher, B., Willis, R. F., and Fitton, B.: 1973, Astrophys. J. 181, 101.CrossRefADSGoogle Scholar
  6. Frogel, J. A. and Persson, S. E.: 1975, Astrophys. J. 195, L15.CrossRefADSGoogle Scholar
  7. Furniss, I., Jennings, R. E., and Moorwood, A. F. M.: 1974, to appear in Proceedings of the 8th ESLAB Symposium, H II Regions and the Galactic Centre.Google Scholar
  8. Gillett, F. C. and Forrest, W. J.: 1973, Astrophys. J. 179, 483.CrossRefADSGoogle Scholar
  9. Harper, D. A. and Low, F. J.: 1971, Astrophys. J. 165, L9.CrossRefADSGoogle Scholar
  10. Ireland, J. G.: 1970, Astrophys. Space Sci. 6, 107.CrossRefADSGoogle Scholar
  11. Mathews, W. G.: 1967, Astrophys. J. 147, 965.CrossRefADSGoogle Scholar
  12. Münch, G. and Persson, S. E.: 1971, Astrophys. J. 165, 241.CrossRefADSGoogle Scholar
  13. Ney, E. P., Strecker, D. W., and Gehrz, R. D.: 1972, Astrophys. J. 180, 809.CrossRefADSGoogle Scholar
  14. O’Dell, C. R., Hubbard, W. B., and Peimbert, M.: 1966, Astrophys. J. 143, 743.CrossRefADSGoogle Scholar
  15. Spitzer, L.: 1956, Physics of Fully Ionized Gases, Interscience, New York.zbMATHGoogle Scholar
  16. Spitzer, L.: 1968, Diffuse Matter in Space, Interscience, New York.Google Scholar
  17. Watson, W. D.: 1973, J. Opt. Soc. Am. 63, 164.CrossRefADSGoogle Scholar
  18. Wright, E. L.: 1973, Astrophys. J. 185, 569.CrossRefADSGoogle Scholar
  19. Wynn Williams, G. and Becklin, E.: 1974, Publ. Astron. Soc. Pacific 86, 5.CrossRefADSGoogle Scholar

Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1976

Authors and Affiliations

  • A. F. M. Moorwood
    • 1
  • B. Feuerbacher
    • 1
  1. 1.Astronomy DivisionEuropean Space Research OrganisationNoordwijkHolland

Personalised recommendations