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Chemodynamical models of barred galaxies

Published online by Cambridge University Press:  21 April 2007

E. Emsellem ,
H. Wozniak ,
G. Massacrier ,
J.-F. Gonzalez ,
J. Devriendt ,
N. Champavert ,
H. Wozniak  and
L. Michel-Dansac
H. Wozniak*
Affiliation:
Université de Lyon 1, Centre de Recherche Astronomique de Lyon, Lyon, France
L. Michel-Dansac
Affiliation:
Instituto de Astronomia, Ensenada, UNAM, Mexico
*
[email protected] ; [email protected]
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Abstract

The use of chemodynamical simulations of disc galaxies calibrated in Band K bands allows us to compare the location of Ultra HarmonicResonance (UHR) and corotation (CR) with photometrically estimated barlengths. We apply several observational criteria to determine barlengths. We show that the minimum of ellipticity located just outsidethe bulk of the bar is correlated with CR whereas the location of UHRcan be approximated using the end of the position-angle plateau of barisophotes. We give evidence that the classification of slow/fastbars, based on the ratio ${\cal R} = RCR/Rbarcould increase from 1 (fast bar) to 1.4 (slow bar) just by a change ofmethod.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 24: CRAL-2006. Chemodynamics: From First Stars to Local Galaxies , 2007 , pp. 51 - 56
Copyright
© EAS, EDP Sciences, 2007

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