1) Deeper comparison of the case 1.4 Parameters: M/M O =2.0 X 0 =0.70 Y 0 =0.28 Z 0 =0.02 l MLT /H p =1.6 Target model: T c =1.9. 10 7 K (PMS) Tests and.

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Presentation transcript:

1) Deeper comparison of the case 1.4 Parameters: M/M O =2.0 X 0 =0.70 Y 0 =0.28 Z 0 =0.02 l MLT /H p =1.6 Target model: T c = K (PMS) Tests and future plans for the FRANEC code (Pise and Naples groups)

Global parameters case 1.4: CESAM 0 FRANEC  Age [Myr] R/R O L/L O T eff [K] T c [10 7 K]  c [g/cm 3 ] X c M cor /M R env /R

Relative differences for c 2 and X abundance The effect of doubling the number of meshes or reducing the time step by a factor 2 is negligible  Q/Q=(FRANEC-CESAM 0 )/FRANEC

Comparison of the H profile

Relative differences for T, P, 

Only weak (Salpeter) screening for a better comparison with CESAM 0

Zoom of the more external region

Relative differences for T, P,  with and without intermediate screening The effect on the structure of taking out intermediate screening is small

Relative difference for the opacity values

Relative difference between the CESAM 0 opacity and the opacity calculated with our subroutine for T, , X taken from the CESAM 0 model

Relative difference for the energy generation

Energy generation profiles ____ CESAM 0 ____ FRANEC

2) Deeper comparison of the case 1.1 Parameters: M/M O =0.9 X 0 =0.70 Y 0 =0.28 Z 0 =0.02 l MLT /H p =1.6 Target model: X c =0.35 (MS)

Global parameters case 1.1: CESAM 0 FRANEC  Age [Myr] R/R O L/L O T eff [K] T c [10 7 K]  c [g/cm 3 ] X c R env /R

Summary: For the case 1.4 good agreement for C 2, X, P, T,  but relevant discrepancies for the energy production profile, extension of the convective core, total luminosity -> more tests are needed For the 1.1 case good agreement of all the quantities

Future developments: All the others task1 models will be recalculated with weak screening, grey atmosphere, new element abundances and no conductive opacity The density derivative needed for the pulsation a(i) quantities will be computed analytically and the results will be compared with the ones obtained by other codes