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Axisymmetric Dynamical Models of the Central Regions of Galaxies

  • Authors: Karl Gebhardt, Douglas Richstone, Scott Tremaine, Tod R. Lauer, Ralf Bender, Gary Bower, Alan Dressler, S. M. Faber, Alexei V. Filippenko, Richard Green, Carl Grillmair, Luis C. Ho, John Kormendy, John Magorrian, and Jason Pinkney

Gebhardt et al. 2003 The Astrophysical Journal 583 92.

  • Provider: AAS Journals

Caption: Fig. 12.

Top: Ratio of radial to tangential rms velocity, plotted as a function of central luminosity density slope. Each galaxy appears twice in the plot: the open symbols represent the ratio at Re/4, while the filled symbols are the ratio in the central bin. An isotropic dispersion tensor corresponds to ﹩\sigma _{r}/ \sigma _{t}=1﹩. In addition to the 12 galaxies in this paper, we include an additional five presented in Table 3. The division between core and power‐law galaxies is around ﹩d\mathrm{log}\,\nu / d\mathrm{log}\,r=-1.3﹩, with core galaxies having flatter profiles. Bottom: Change in shape of the velocity dispersion tensor (ratio of radial to tangential motion) from the center to Re/4 as a function of central luminosity density slope.

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