Photometric characterization of the asteroseismic COROT targets R

Photometric characterization of the asteroseismic COROT targets R. Garrido P. J. Amado V. Costa S. Martín-Ruíz I. Olivares A. Rolland Spanish contribution

Ground based observing preparatory activities Goal: improve our knowledge of the COROT targets Asterosismology program Strömgren photometry: OSN (IAA) Teff log g [Fe/H] variability ~ 100 nights Exoplanets program DENIS y 2 MASS Large field photometry (Megacam/CFH) High resolution échelle spectroscopy: several T 2 m Teff log g abundancies vsini SB 2 anomalies variability ~ 200 nights Images in the vicinity of the main targets • Schmidt plates • Adaptative optics in T 4 M (CFH et TNG) Some nights Spanish contribution Data base available in GAUDI www. http: //sdc. laeff. esa. es/gaudi/

Stromgren photometry SNO Spanish contribution

Stromgren photometry SNO Spanish contribution

Stromgren photometry SNO Spanish contribution

Physical calibration : Temp. Logg @ Spanish contribution ams. astro. univie. ac. at/templogg/

Spanish contribution

Effects on the equilibrium models • Model without rotation • Different models Spanish contribution

Spanish contribution

GAUDI • Base de datos GAUDI gaudi COROTSKY Spanish contribution

Technical Spanish contribution

Technical Spanish contribution

Present and future work • • • Monitoring secondary targets Extension of the Strömgren input catalogue down to V=9. 5 mag Comparison of physical parameters from spectra and photometry Spanish contribution