Using images from the Helioseismic and Magnetic Imager aboard the Solar Dynamics
Observatory, we extract the radial velocity (RV) signal arising from the suppression of …

Context. Stellar granulation generates fluctuations in photometric and spectroscopic data
whose properties depend on the stellar type, composition, and evolutionary state …

Context. Stellar variability impacts radial velocities (hereafter RVs) at various timescales and
therefore the detectability of exoplanets and the mass determination based on this …

High-precision photometric data from space missions have improved our understanding of
stellar granulation. These observations have shown with precision the stochastic brightness …

To detect Earth-mass planets using the Doppler method, a major obstacle is to differentiate
the planetary signal from intrinsic stellar variability (eg pulsations, granulation, spots, and …

An important limitation of standard multiple testing procedures is that the null distribution
should be known. Here, we consider a null distribution-free approach for multiple testing in …

Context. High-precision stellar analyses require hydrodynamic 3D modeling. Testing such
models is feasible by retrieving spectral line shapes across stellar disks, using differential …

Context. The detectability of exoplanets and the determination of their projected mass in
radial velocity are affected by stellar magnetic activity and photospheric dynamics. Among …

We present a formulation and numerical algorithm to extend the scheme for gray radiation
magnetohydrodynamics (MHD) developed by Jiang to include the frequency dependence …

Context. The detection of small exoplanets with the radial velocity (RV) technique is limited
by various poorly known noise sources of instrumental and stellar origin. As a consequence …