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23 April 2024 |
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Article overview
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The Vcirc-sigma0 Relation of Galaxie | | Stephane Courteau
; Michael McDonald
; Lawrence M. Widrow
; | | Date: |
24 Sep 2007 | | Abstract: | Courteau et al. (2007a) reported on the dependence of the ratio of a galaxy’s
maximum circular velocity, Vcirc, to its central velocity dispersion, sigma0,
on morphology, or equivalently total light concentration. This Vcirc-sigma0
concentration relation, which involves details about the local and global
galaxy physics, poses a fundamental challenge for galaxy structure models.
Furthermore, not only must these models reproduce the Vcirc-sigma0 relation and
its various dependences, they must simultaneously match other fundamental
scaling relations such as the velocity-size-luminosity and color-luminosity
relations of galaxies. We focus here on the interpretation of parameters that
enter the Vcirc-sigma0 relation to enable proper data-model comparisons and
follow-up studies by galaxy modelers and observers. | | Source: | arXiv, 0709.3682 | | Services: | Forum | Review | PDF | Favorites | |
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