Ref: ASTROimport-1044

Characterization and parameter determination of CoRoT variable stars with FLAMES

Semaan, T. ; Neiner, C. ; Martayan, C. ; Debosscher, J. ; Sarro, L. M. ; Frémat, Y. ; Aerts, C.

published in American Institute of Physics Conference Series, 1170, pp. 391-393 (2009)

Abstract: We present preliminary results from the ground-based ESO/FLAMES observational program set up for the spectroscopic study of variable stars observed in the CoRoT exoplanet fields. In the Initial Run (IRa01) and the two first long anticenter runs LRa01 and LRc01 about 9000 variable stars have been identified by the CVC (Corot Variable Classifier). The multi-objects FLAMES medium resolution (R~7000) spectroscopic observation of CoRoT variable stars from the IRa01 and LRa01 fields allows us to classify the variable stars accurately. In particular, we identified the Be stars and will determine their fundamental parameters by synthetic spectral fitting and by taking into account NLTE and rapid rotation effects. Confronting these parameters to the CoRoT light curves of these objects will allow us to test for correlations between stellar parameters and pulsation properties in a statistical way, in particular to study the instability strips. Moreover, knowing the fundamental parameters of the stars will allow us to perform seismic modeling.

DOI: 10.1063/1.3246523
Links: link

The record appears in these collections:
Royal Observatory of Belgium > Astronomy & Astrophysics
Science Articles > Non-refereed Articles

 Record created 2016-07-01, last modified 2016-07-01