Advertisement

The Interstellar Medium in Active Galaxies

  • Julian H. Krolik
Part of the Astrophysics and Space Science Library book series (ASSL, volume 161)

Abstract

Simple estimates based on the observed ionizing luminosities of active galactic nuclei suggest that they should have profound influence on the interstellar media of their host galaxies. Surprisingly, they do not. The simple estimates fail because they do not adequately account for the complicated exchange of mass between the stellar population and the interstellar medium, and because they do not include any obscuration by dusty material close to the nucleus. Recent observational work has demonstrated the existence of obscuration close to the nucleus; recent theoretical work has clarified the physical properties of this material. Because the obscuration is not complete, the ionizing luminosity does generate extended emission line radiation from the host galaxy’s interstellar medium along certain preferred directions. Future work will use these extended emission line regions as diagnostics of interstellar conditions in the inner parts of active nuclei. In this regard, several speculations are presented about the dynamics of this gas and what role it may play in fuelling the central nucleus.

Keywords

Emission Line Interstellar Medium Active Galactic Nucleus Column Density Spiral Galaxy 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Antonucci, R.R.J, and Miller, J.S. 1985, Ap. J. 297, 621.ADSCrossRefGoogle Scholar
  2. Balbus, S.A. and McKee, C.F. 1982, Ap. J. 252, 529.ADSCrossRefGoogle Scholar
  3. Baldwin, J.A., Wilson, A.S., and Whittle, M. 1987, Ap. J. 319, 84.ADSCrossRefGoogle Scholar
  4. Baum, S.A., Heckman, T.M., Bridle, A., van Bruegel, W., and Miley, G. 1988, Ap. J. Suppl. 68, 643.ADSCrossRefGoogle Scholar
  5. Begelman, M.C. 1985, Ap. J. 297, 492.ADSCrossRefGoogle Scholar
  6. Blandford, R.D. and McKee, C.F. 1982, Ap. J. 255, 419.ADSCrossRefGoogle Scholar
  7. Cecil, G. 1989 in The Interstellar Medium in External Galaxies, H.A. Thronson and J.M. Shull, eds. ( Kluwer: Dordrecht )Google Scholar
  8. Chang, C.A., Schiano, A.V.R., and Wolfe, A.M. 1987, Ap. J. 322, 180.ADSCrossRefGoogle Scholar
  9. Corbin, M.R., Baldwin, J.A., and Wilson, A.S. 1988, Ap. J. 334, 584.ADSCrossRefGoogle Scholar
  10. Davidson, K. and Netzer, H. 1979, Revs. Mod. Phys. 51, 715.ADSCrossRefGoogle Scholar
  11. Edelson, R.A. and Krolik, J.H. 1988, Ap. J. 333, 646.ADSCrossRefGoogle Scholar
  12. Edelson, R.A., Malkan, M.A., and Rieke, G. 1986, Ap. J. 321, 238.Google Scholar
  13. Ferland, G.J. 1981, Ap. J. 249, 17.ADSCrossRefGoogle Scholar
  14. Ferland, G.J. and Netzer, H. 1983, Ap. J. 264, 105.ADSCrossRefGoogle Scholar
  15. Filippenko, A. and Halpern, J. 1984, Ap. J. 285, 458.ADSCrossRefGoogle Scholar
  16. Genzel, R. and Townes, C. 1987, Ann. Rev. Astron. Astrop. 25, 377.ADSCrossRefGoogle Scholar
  17. Halpern, J.P. and Steiner, J.E. 1983, Ap. J. Lett. 269, L37.ADSCrossRefGoogle Scholar
  18. Haniff, C.A., Wilson, A.S., and Ward, M.J. 1988, Ap. J. 334, 104.ADSCrossRefGoogle Scholar
  19. Heckman, T.M. 1989, in IAU Symposium 134: Active Galactic Nuclei, D.E. Osterbrock and J.S. Miller, eds. ( Kluwer: Dordrecht ) p.359CrossRefGoogle Scholar
  20. Heckman, T.M., et al. 1989Google Scholar
  21. Hernquist, L. 1989, to appear in Annals of the New York Academy of Sciences: the 14th Texas Symposium on Relativistic Astrophysics Google Scholar
  22. Huchra, J.P. and Burg, R., 1989, preprintGoogle Scholar
  23. Kawara, K., Nishida, M., and Gregory, B. 1989, preprintGoogle Scholar
  24. Königl, A. 1987, Ap. J. 320, 726.ADSCrossRefGoogle Scholar
  25. Koyama, K. 1989, in IAU Symposium 134: Active Galactic Nuclei, D.E. Osterbrock and J.S. Miller, eds. ( Kluwer: Dordrecht ) p. 167CrossRefGoogle Scholar
  26. Krolik, J.H. and Begelman, M.C. 1986, Ap. J. Lett. 308, L55.ADSCrossRefGoogle Scholar
  27. Krolik, J.H. and Begelman, M.C. 1988, Ap. J. 329, 702.ADSCrossRefGoogle Scholar
  28. Krolik, J.H. and Kallman, T.R. 1987, Ap. J. Lett. 320, L5.ADSCrossRefGoogle Scholar
  29. Krolik, J.H. and Lepp, S.L. 1989, Ap. J. in press.Google Scholar
  30. Krolik, J.H., McKee, C.F., and Tarter, C.B. 1981, Ap. J. 249, 422.ADSCrossRefGoogle Scholar
  31. Krolik, J.H. and Meiksin, A. 1989, in preparation.Google Scholar
  32. Krolik, J.H. and Vrtilek, J.M. 1984, Ap. J. 279, 521.ADSCrossRefGoogle Scholar
  33. Lawrence, A. and Elvis, M. 1982, Ap. J. 256, 410.ADSCrossRefGoogle Scholar
  34. McCarthy, P.J. 1988, University of California at Berkeley Ph.D. thesisGoogle Scholar
  35. Meixner, M., Puchalsky, R., Blitz, L., Wright, M.C.H. 1989, preprintGoogle Scholar
  36. Miller, J.S. and Goodrich, R. 1989, in preparation (quoted in Miller, J.S. 1989, in IAU Symposium 134: Active Galactic Nuclei, D.E. Osterbrock and J.S. Miller, eds. ( Kluwer: Dordrecht ) p. 273CrossRefGoogle Scholar
  37. Morris, S., Ward, M.J., Whittle, M., Wilson, A.S., and Taylor, K. 1984, M.N.R.A.S. 216, 193.ADSGoogle Scholar
  38. Mouschovias, T. and Paleologou, E.V., 1979, Ap. J. 230, 204.ADSCrossRefGoogle Scholar
  39. Mouschovias, T. and Paleologou, E.V., 1980, Ap. J. 237, 877.ADSCrossRefGoogle Scholar
  40. Noguchi, M. 1988, Astr. Ap. 203, 259.ADSGoogle Scholar
  41. Norman, C.A. 1988, in Comets to Cosmology, A. Lawrence, ed. ( Springer-Verlag: Berlin )Google Scholar
  42. Osterbrock, D.E. 1978, Proc. Natl. Acad. Sci. USA 75, 540.ADSCrossRefGoogle Scholar
  43. Ostriker, J. and Peebles, P.J.E. 1973, Ap. J. 186, 467.ADSCrossRefGoogle Scholar
  44. Peterson, B. 1988, P.A.S.P. 100, 18.ADSCrossRefGoogle Scholar
  45. Pogge, R. 1989, Ap. J. in press.Google Scholar
  46. Schwarz, M.P. 1985, M.N.R.A.S. 212, 677.ADSGoogle Scholar
  47. Shanbhag, S. and Kembhavi, A. 1988, Ap. J. 334, 34.ADSCrossRefGoogle Scholar
  48. Shlosman, I., Frank, J., and Begelman, M.C. 1989, Nature 338, 45.ADSCrossRefGoogle Scholar
  49. Tadhunter, C.N., Fosbury, R.A.E., di Serego Alighieri, S., Bland, J., Danziger, I.J., Goss, W.M., McAdam, W.B., and Snijders, M.A.J. 1988, M.N.R.A.S. 235, 405.ADSGoogle Scholar
  50. Tohline, J. and Osterbrock, D.E. 1982, Ap. J. Lett. 252, L49.ADSCrossRefGoogle Scholar
  51. Tresch-Fienberg, R., Fazio, G.G., Gezari, D.Y., Hoffman, W.F., Lamb, G.M., Shu, P.K., and McCreight, C.R. 1987, Ap. J. 312, 542.ADSCrossRefGoogle Scholar
  52. Unger, S.W., Pedlar, A., Axon, D.J., Whittle, M., Meurs, E.J.A., and Ward, M.J. 1987, M.N.R.A.S. 228, 671.ADSGoogle Scholar
  53. van Bruegel, W., Miley, G., Heckman, T., Butcher, H., and Bridle, A. 1985, Ap. J. 290, 496.ADSCrossRefGoogle Scholar
  54. Whittle, M. 1989, in IAU Symposium 134: Active Galactic Nuclei, D.E. Osterbrock and J.S. Miller, eds. ( Kluwer: Dordrecht ) p.349CrossRefGoogle Scholar
  55. Wilson, A.S., Baldwin, J.A., and Ulvestad, J.S. 1985 291, 627.Google Scholar
  56. Wilson, A.S. and Heckman, T.M. 1985 in Astrophysics of Active Galaxies and Quasi-Stellar Objects, J.S. Miller, ed. ( University Science Books: Mill Valley ) p. 39.Google Scholar
  57. Wilson, A.S., Ward, M.J., and Haniff, C.A. 1988, Ap. J. 334, 121.ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 1990

Authors and Affiliations

  • Julian H. Krolik
    • 1
  1. 1.Johns Hopkins UniversityUSA

Personalised recommendations