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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. 6.

The rms line‐of‐sight velocity ﹩( V^{2}+\sigma ^{2}) ^{1/ 2}﹩ (in km s−1) as a function of radius (in arcseconds) for each of the galaxies along the major axis. We use V and σ as measured from a Gauss‐Hermite fit; since we do not correct for the higher order moments, these values approximate the actual second moment. The red filled circles are the HST (STIS or FOS) measurements, and the blue open circles are the ground‐based values. The lines are the model results: red solid lines include the HST PSF, and the blue dotted lines include the ground‐based PSF. For NGC 5845, the model value for the central FOS measurement is shown as an open square. We provide these plots only for comparison and note that the models minimize χ2 using the full LOSVD rather than its second moment.

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