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Author

D. Mourard

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Review Oct 2026

Plato benchmark stars I. The initial benchmark sample

The ESA PLATO mission aims to detect and characterise Earth-size exoplanets orbiting bright, late-type stars using high-precision photometry and asteroseismology. Precise stellar parameters of host stars are essential for exoplanet characterisation and model benchmarking. This work defines the PLATO benchmark stars (PB...

T. Merle, P. Maxted, O. Creevey et al. · 0 citations
Review Open access Sep 2026

Interferometric Survey of Stellar Parameters: Limb darkening study with the Pipeline for Interferometric Measurements of Stars

Accurate and unbiased determination of stellar parameters is of importance in many astrophysical domains. We therefore present an improved method to estimate stellar parameters, based on interferometric observations and stellar atmosphere models, as well as spectroscopic and photometric data. We estimate he fundamental...

N. Ebrahimkutty, D. Mourard, P. Bério et al. · 0 citations
Review Open access Aug 2026

CHARA/SPICA: The six-telescope visible combiner and near-infrared fringe tracker for the CHARA Array

The suite called Stellar Parameters and Images with a Cophased Array (SPICA) has two interferometric instruments installed at the focus of the CHARA Array located at Mount Wilson, CA. SPICA is made of SPICA-VIS, a fiber-fed six-beam visible spectrograph with three spectral resolutions, and SPICA-FT, a six-beam near-inf...

D. Mourard, P. Bério, C. Bailet et al. · 2 citations
Open access Aug 2026

On-sky demonstration of dual-field interferometry at the CHARA Array

Dual-field interferometry uses a bright reference star for real-time fringe tracking, allowing a second beam combiner to record long coherent integrations on a fainter off-axis science target. At the Center for High Angular Resolution Astronomy (CHARA) Array, we implement this mode using the six-telescope MIRC-X and MY...

N. Anugu, J. Monnier, D. Gies et al. · 0 citations
Review Open access Aug 2026

Interferometric survey of stellar parameters. Towards homogeneous FGK stars parameters and surface-brightness color relation in the context of PLATO space mission

Estimations of stellar angular diameters can be determined based on the surface brightness-colour relation (SBCR) and photometry. In the context of the PLATO space mission, the SBCR is considered to be an independent empirical alternative for estimating the stellar radii of FGK stars. We implemented a homogeneous appro...

R. I. Ibañez Bustos, D. Mourard, N. Nardetto et al. · 0 citations
Review Open access Aug 2026

Interferometric Survey of Stellar Parameters: Mass of the metallic A-type binary β Aur

Long-baseline optical interferometry provides spatially resolved observations of close binaries, complementing spectroscopic and photometric constraints on stellar parameters. With the capabilities of the new visible CHARA/SPICA instrument and the multiple spectral band operation of CHARA, our goal is to resolve orbits...

J. Jonák, D. Mourard, J. Monnier et al. · 0 citations

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