Bibcode
Vega Beltrán, J. C.; Erwin, P.; Beckman, J.
Referencia bibliográfica
EAS Publications Series, Volume 10, 2003, Galactic and Stellar Dynamics, Proceedings of JENAM 2002, held in Porto, Portugal, 3-6 September, 2002. Edited by C. M. Boily, P. Patsis, S. Portegies Zwart, R. Spurzem and C. Theis, pp.37.
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2003
Número de citas
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Descripción
The kinematics of the inner zones of disc galaxies have recently been
shown
to be much more complicated than previously thou-ght. New instruments
and
more sensitive detectors have allowed us to obtain spectra of higher S/N
ratio and resolution, as well as images, for a more refined study of
these
inner zones. Decoupled kinematic cores have been known for some time to
exist in ellipticals, but complex structures and their kinematic
counterparts are now showing up in disc galaxies also. There is a
variety
of dynamical origins for these structures, and they can be detected
sometimes in the gaseous component, sometimes in the stellar component,
and
sometimes in both. Here we give an overview of the components which are
found with significant frequency, and explain how we can distinguish one
from another. The components covered include black holes, inner cores,
inner bars, inner discs, inner annuli, inner bulges, etc. In most cases
a
reliable diagnostic of the component structure would not be possible
without combining high quality photometric observations with high
quality
kinematic observations.