1 / 14

Mode identification using Corot exo-planetary colours

This study explores the identification of exoplanetary models using observations from the Corot space mission. By analyzing color variations related to local effective temperature and gravity, and employing non-adiabatic computations, we gain insights into the effects of convection and atmospheric models. The research assesses limb darkening and thermodynamic equilibrium in stellar atmospheres, providing critical information for interpreting the physical properties of exoplanets. Through collaboration among researchers from Spain, Belgium, France, and Algeria, we present findings that contribute to the understanding of exoplanetary color signatures.

alder
Télécharger la présentation

Mode identification using Corot exo-planetary colours

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Mode identification usingCorot exo-planetary colours Rafael Garrido IAA, Granada (Spain) Juan Carlos Suárez IAA, Granada (Spain) Caroline BarbanKU, Leuven (Belgium) Andy Moya, Marc Antoine Dupret & Marie-Jo Goupil UMR, 8109 Paris-Meudon (France) Ahmed GrigahceneAlgiers Observatory (Algeria)

  2. Non-adiabatic computations Local effective temperature variation Surface distortion New equilibrium atmospheric models (Heiter et al. A&A 392, 619 2002) (Barban et al. A&A 405, 1095 2003) Local effective gravity variation Corot Week 8 Watson, R.D. 1988 ApSS 140, 255

  3. Temperature distribution: • Monochromatic Flux: • Limb darkening: Non-adiabatic models: Dupret et al. 2003 A&A 398, 677 Moya et al. 2004 A&A 414, 1081 Radiative equilibrium in the local atmosphere One layer approximation

  4. Convection – pulsation interaction: Gabriel´s theory Hydrodynamic equations Convective fluctuations equations Mean equations Perturbation Perturbation Equations of linear non-radial non-adiabatic oscillations Correlation terms • Convective flux • Reynolds stress Perturbation of • Turbulent kinetic • energy dissipation Corot Week 8

  5. δ Scuti Stars Amplitudes M=1.8 Mo Grigahcene et al. 2005 A&A 434, 1055 Dupret et al. 2004 A&A 414, L17 Dupret et al. 2005 A&A 435, 927 Corot Week 8

  6. δ Scuti Stars Phases M=1.8 Mo Grigahcene et al. 2005 A&A 434, 1055 Dupret et al. 2004 A&A 414, L17 Dupret et al. 2005 A&A 435, 927 Corot Week 8

  7. δ Scuti StarsStrömgren photometry Grigahcene et al. 2005 A&A 434, 1055 Dupret et al. 2004 A&A 414, L17 Dupret et al. 2005 A&A 435, 927 Corot Week 8

  8. γ Doradus StarsAmplitudes Grigahcene et al. 2005 A&A 434, 1055 Dupret et al. 2004 A&A 414, L17 Dupret et al. 2005 A&A 435, 927 Corot Week 8

  9. γ Doradus StarsAmplitudes Grigahcene et al. 2005 A&A 434, 1055 Dupret et al. 2004 A&A 414, L17 Dupret et al. 2005 A&A 435, 927 Corot Week 8

  10. Corot Week 8

  11. Corot Week 8

  12. Daszynska-Daszkiewicz et al. 2002 A&A 392, 151 Corot Week 8

  13. Corot Week 8 Palle et al. 2002, ASP. Conf., Porto

  14. CONCLUSIONS EXOPLANET COLOURS CAN SUPPLY • A KEY FOR MODE IDENTIFICATION • RELEVANT INFORMATION ON: • MODEL ATMOSPHERES • LIMB DARKENING • NON-ADIABATIC PHENOMENA • CONVECTION • ROTATION Corot Week 8

More Related