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Objectives Sample 2021 2024 2027 Start of the CHARA-SPICA Survey Objectives Determination of angular diameter Application of previous determinations Focus on exoplanet host stars throughout HR diagram to PLATO targets and detected binaries 2021 2024 2027 Start of the CHARA-SPICA survey PLATO fielDs are known First PLATO data Sample - COROT, SONG and TESS observable targets - Extension of the CHARA-SPICA sample to PLATO targets - Core sample focused on F, G, K IV-V stars - Follow-up detected binaries - Extension to giants and earlier types - Explore various metallicities ProviDe R anD T for preparation pipeline eff Binary : mass ratio Binary detection: raDii of components Precise anD accurate Teff anD q SBCR - FLAG (CHARA-SPICA anD GAIA complementarity in separation) MethoDs Calibration of seismic scale relation - RaDius of the component(s) SESSION 1 &2 : Objectives and methods Objectives Determination of angular diameter throughout HR diagram 2021 2024 2027 Start of the CHARA-SPICA survey PLATO fields are known First PLATO data Teff usually determined from spectrophotometry or spectroscopy, - seismic modellinG requires mass, radius and T eff dependent on model atmospheres (precise but not accurate) - provide q as « model independent » observable - derive R from q and p except for limb darkening - derive Teff from bolometric luminosity and q watch out for extinction - improvement of SBCR calibration - … to be used on stars with no direct q measurement - use determinations of radius and Teff in… SESSION 1 &2 : Objectives and methods Objectives Determination of angular diameter throughout HR diagram 2021 2024 2027 Start of the CHARA-SPICA survey PLATO fields are known First PLATO data - seismic modellinG requires mass, radius and Teff - extend tarGet sample with PLATO tarGets - provide q as « model independent » observable - derive R from q and p - derive Teff and q for tarGets that are briGht enouGh - derive Teff from bolometric luminosity and q - apply improved SBCR to fainter PLATO tarGets - improvement of SBCR calibration - insert newly determined parameters into PLATO database - … to be used on stars with no direct q measurement - use Gaia, spectro, CHARA/SPICA data to produce models - identify new multiple stars (complementary to Gaia) à flaG - measure radii of components - estimate mass ratios from orbital elements (need multiple visits) - use determinations of radius and Teff in… SESSION 1 &2 : Objectives and methods Objectives Determination of angular diameter throughout HR diagram 2021 2024 2027 Start of the CHARA-SPICA survey PLATO fields are known First PLATO data - extend tarGet sample with PLATO tarGets - seismic modellinG requires mass, radius and Teff - focus on exoplanet hosts - provide q as « model independent » observable - derive Teff and q for tarGets that are briGht enouGh - derive R from q and p - apply improved SBCR to fainter PLATO tarGets and detected binaries - derive Teff from bolometric luminosity and q - insert newly determined parameters into PLATO database - use Gaia, spectro, CHARA/SPICA data to produce models - improvement of SBCR calibration - … to be used on stars with no direct q measurement - identify new multiple stars (complementary to Gaia) à flaG - measure radii of components - estimate mass ratios from orbital elements (need multiple visits) - use determinations of radius and Teff in….
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