6. SUGGESTIONS FOR FURTHER READING

• The search for BHs is reviewed in the following papers:
  Kormendy, J., & Richstone, D. Ann. Rev. Astr. Astrophys. 33, 581 (1995)
  Richstone, D., et al. Nature 395, A14 (1998)

• In the following papers, quasar energetics are used to predict the masses of dead AGN engines:
  Soltan, A. M.N.R.A.S. 200, 115 (1982)
  Chokshi, A., & Turner, E. L. M.N.R.A.S. 259, 421 (1992)

• Dynamical models of galaxies as linear combinations of individual orbits are discussed in
  Schwarzschild, M. Astrophys. J. 232, 236 (1979)
  Richstone, D. O., & Tremaine, S. Astrophys. J. 327, 82 (1988)
  van der Marel, R. P., Cretton, N., de Zeeuw, P. T., & Rix, H.-W. Astrophys. J. 493, 613 (1998)
  Gebhardt, K., et al. Astron. J. 119, 1157 (2000)

• The BH detection in NGC 3115 is discussed in
  Kormendy, J., & Richstone, D. Astrophys. J. 393, 559 (1992)
  Kormendy, J., et al. Astrophys. J. Lett. 459, L57 (1996)

• The BH detection in M 31 is discussed in
  Dressler, A., & Richstone, D. O. Astrophys. J. 324, 701 (1988)
  Kormendy, J. Astrophys. J. 325, 128 (1988)

• Tremaine's model for the double nucleus of M 31 and new evidence for that model are in
  Tremaine, S. Astron. J. 110, 628 (1995)
  Kormendy, J., & Bender, R. Astrophys. J. 522, 772 (1999)

• HST spectroscopy of the double nucleus of M 31 is presented in
  Statler, T. S., King, I. R., Crane, P., & Jedrzejewski, R. I. Astron. J. 117, 894 (1999)

• The following are thorough reviews of the Galactic center:
  Genzel, R., Hollenbach, D., & Townes, C. H. Rep. Prog. Phys. 57, 417 (1994)
  Morris, M., & Serabyn, E. Ann. Rev. Astr. Astrophys. 34, 645 (1996)

• The latest measurement of the size of the Galactic center radio source is by
  Lo, K. Y., Shen, Z.-Q., Zhao, J.-H., & Ho, P. T. P. Astrophys. J. Lett. 508, L61 (1998)

• The remarkable proper motion measurements of stars near Sgr A* and resulting conclusions about the Galactic center BH are presented in
  Genzel, R., Eckart, A., Ott, T., & Eisenhauer, F. M.N.R.A.S. 291, 219 (1997)
  Ghez, A. M., Klein, B. L., Morris, M., & Becklin, E. E. Astrophys. J. 509, 678 (1998)

• Arguments against compact dark star clusters in NGC 4258 and the Galaxy are presented in
  Maoz, E. Astrophys. J. Lett. 494, L181 (1998)