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Combined metallicity and dynamical evolution of an isothermal disk

Published online by Cambridge University Press:  22 December 2003

C. Boily ,
P. Patsis ,
S. Portegies ,
R. Spurzem ,
C. Theis ,
A. Siebert ,
O. Bienaymé  and
C. Soubiran
A. Siebert
Affiliation:
Observatoire de Strasbourg, UMR 7550, 11 rue de l'Université, 67000 Strasbourg, France and Steward Observatory, Tucson, AZ 85721-0065, USA
O. Bienaymé
Affiliation:
Observatoire de Strasbourg, UMR 7550, 11 rue de l'Université, 67000 Strasbourg, France and Steward Observatory, Tucson, AZ 85721-0065, USA
C. Soubiran
Affiliation:
Observatoire Aquitain des Sciences de l'Univers, UMR 5804, 2 rue de l'Observatoire, 33270 Floirac, France
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Abstract

A simple model for the evolution of an isothermal disk has been developed.It combines both the chemical evolution (through the Age-MetallicityRelation) and dynamical evolution (through the age-dispersion relation). Applying this model to a sample of Red Clump Stars from the Tycho-2 catalog,observed with the high resolution echelle spectrograph Elodie at theObservatoire de Haute Provence, we derive the underlying Star FormationHistory and compare it with local determinations using chromosphericactivity survey by Rocha-Pinto et al. (2000b).

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 10: JENAM 2002, Galactic & Stellar Dynamics , 2003 , pp. 215
Copyright
© EAS, EDP Sciences, 2003

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