Astrophysics and Space Science

, Volume 39, Issue 1, pp 19–30 | Cite as

Effects of suprathermal grains

  • S. P. Tarafdar
  • N. C. Wickramasinghe
Article

Abstract

Grains ejected from stars at velocities of ∼ 107 cm s−1 and/or grains accelerated by the pressure of starlight in the intercloud medium to velocities in the range 2×106–107 cm s−1 are slowed to velocities of about 2×105 cm s−1 in a typical interstellar cloud. The interaction of fast grains with gas atoms as they are slowed in clouds could provide (a) the dominant heat source for interstellar clouds; (b) sites for molecule formation; and (c) a mechanism of providing a pressure balance between clouds and the intercloud medium.

Keywords

Heat Source Pressure Balance Interstellar Cloud Molecule Formation Intercloud Medium 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Bardsley, J. N.: 1972, unpublished results.Google Scholar
  2. Barlow, M. J. and Solk, J.: 1975, preprints.Google Scholar
  3. Bates, D. R. and Spitzer, L.: 1951,Astrophys. J. 113, 441.Google Scholar
  4. Cameron, A. G. W.: 1968, in L. H. Ahrens (ed.),Origin and Distribution of the Elements, Pergamon Press.Google Scholar
  5. Dalgarno, A. and McCray, R. A.: 1972,Ann. Rev. Astron Astrophys. 10, 375.Google Scholar
  6. Dalgarno, A. and Oppenheimer, M.: 1974,Astrophys. J. 192, 597.Google Scholar
  7. Davies, R. D. and Matthews, H. E.: 1972,Monthly Notices Roy. Astron. Soc. 156, 253.Google Scholar
  8. Deutsch, A. J.: 1960,Stars and Stellar Systems 6, 543.Google Scholar
  9. Field, G. B.: 1974,Proc. Les Houches Summer School.Google Scholar
  10. Frisch, P.: 1972,Astrophys. J. 173, 301.Google Scholar
  11. Gilman, R. C.: 1973,Monthly Notices Roy. Astron. Soc. 161, 3P.Google Scholar
  12. Hayakawa, S.: 1974,Astrophys. Space Sci. 31, L13.Google Scholar
  13. Hayakawa, S.: 1975, in N. C. Wickramasinghe and D. J. Morgan (eds.),Publication of Cardiff Symposium on Solid State Astrophysics, D. Reidel Publ. Co., Dordrecht, Holland, p. 93.Google Scholar
  14. Herbst, E. and Klemperer, W. B.: 1973,Astrophys. J. 185, 505.Google Scholar
  15. Hollenbach, D. J., Werner, M. W., and Salpeter, E. E.: 1971,Astrophys. J. 163, 165.Google Scholar
  16. Hoyle, F., Solomon, P., and Woolf, W. J.: 1973,Astrophys. J. Letters 185, L89.Google Scholar
  17. Kramers, H. A. and ter Haar, D.: 1946,Bull. Astron. Soc. Neth. 10, 137.Google Scholar
  18. Krauss, M. and Julienne, P.: 1973,Astrophys. J. 183, L139.Google Scholar
  19. Morton, D. C.: 1975,Astrophys. J. 197.Google Scholar
  20. Reddish, V. C.: 1967,Monthly Notices Roy. Astron. Soc. 135, 251.Google Scholar
  21. Salpeter, E. E.: 1974a,Astrophys. J. 193, 579.Google Scholar
  22. Salpeter, E. E.: 1974b,Astrophys. J. 193, 585.Google Scholar
  23. Salpeter, E. E. and Wickramasinghe, N. C.: 1969,Nature 222, 442.Google Scholar
  24. Stecher, T. P. and Williams, D. A.: 1966,Astrophys. J. 146, 88.Google Scholar
  25. Solomon, P. M. and Klemperer, W. B.: 1972,Astrophys. J. 178, 389.Google Scholar
  26. Smith, W. H., Liszt, H. S., and Lutz, B. L.: 1973,Astrophys. J. 183, 69.Google Scholar
  27. Tarafdar, S. P. and Wickramasinghe, N. C.: 1975,Nature 254, 203.Google Scholar
  28. Walker, T. and Kelly, H. P.: 1972,Chem. Phys. Letters 16, 511.Google Scholar
  29. Watson, W. D.: 1972,Astrophys. J. 176, 103.Google Scholar
  30. Watson, W. D.: 1974,Astrophys. J. 183, L17.Google Scholar
  31. Weymann, R.: 1963,Ann. Rev. Astron. Astrophys. 1, 97.Google Scholar
  32. Wickramasinghe, N. C.: 1972,Monthly Notices Roy. Astron. Soc. 159, 269.Google Scholar
  33. Wickramasinghe, N. C.: 1974,Nature 252, 462.Google Scholar
  34. Wickramasinghe, N. C.: 1975,Monthly Notices Roy. Astron. Soc. 170, 11P.Google Scholar

Copyright information

© D. Reidel Publishing Company 1976

Authors and Affiliations

  • S. P. Tarafdar
    • 1
  • N. C. Wickramasinghe
    • 1
  1. 1.Dept. of Applied Mathematics and AstronomyUniversity CollegeCardiffWales, U.K.

Personalised recommendations