286 citations · 2.1k across the 48 of their papers we have counts for
21 papers · 1 filter
Predicting convective blueshift and radial-velocity dispersion due to granulation for FGK stars
S. Dalal, R. D. Haywood, A. Mortier +2
To detect Earth-mass planets using the Doppler method, a major obstacle is to differentiate the planetary signal from intrinsic stellar variability (e.g., pulsations, granulation,…
Characterisation of stellar activity of M dwarfs. I. Long-timescale variability in a large sample and detection of new cycles
L. Mignon, N. Meunier, X. Delfosse +7
M dwarfs are active stars that exhibit variability in chromospheric emission and photometry at short and long timescales, including long cycles that are related to dynamo processes…
A HARPS radial velocity search for planets in the Scorpius-Centaurus association. And its combination with the HARPS and SOPHIE young nearby stars (YNS) surveys
Antoine Grandjean, A. -M. Lagrange, N. Meunier +13
The Scorpius-Centaurus (Sco-Cen) young and nearby massive star-forming region is particularly well suited for extrasolar planet searches with both direct imaging and radial velocit…
Relationship between Ca and H chromospheric emission in F-G-K stars: indication of stellar filaments?
N. Meunier, M. Kretzschmar, R. Gravet +2
Different relationships between the H and Ca II chromospheric emissions have been reported in solar-type stars. In particular, the time-series of emissions in these two lines ar…
Stellar variability in radial velocity
Nadège Meunier
Stellar activity due to different processes (magnetic activity, photospheric flows) affects the measurement of radial velocities (RV). Radial velocities have been widely used to de…
The effects of granulation and supergranulation on Earth-mass planet detectability in the habitable zone around F6-K4 stars
N. Meunier, A. M. Lagrange
The detectability of exoplanets and the determination of their projected mass in radial velocity are affected by stellar magnetic activity and photospheric dynamics. The effect of…