High-signal-to-noise-ratio differential interferometric observations of active galactic nucleus broadline regions (AGN BLRs), combined with reverberation mapping, can provide direct angular-diameter distances through BLR parallax. Such measurements would complement standard candles and standard rulers, with application...
R. Petrov, Farin Drewes, J. Leftley et al.· Astronomical Telescopes + In...· 0 citations
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.· Astronomy & Astrophysics· 0 citations
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.· Astronomy & Astrophysics· 2 citations
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.· Astronomy & Astrophysics· 0 citations
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.· Astronomy & Astrophysics· 0 citations
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