activity
20052023
most citedUsing the Sun to estimate Earth-like planets detection capabilities II. Impact of plages

286 citations · 2.1k across the 48 of their papers we have counts for

collaborators

48 papers

astro-ph.SR2023★ 7 cited

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,…

astro-ph.EP2023★ 14 cited

Activity time series of old stars from late F to early K VI. Exoplanet mass characterisation and detectability in radial velocity

Nadège Meunier, Romain Pous, Sophia Sulis +2

Stellar variability impacts radial velocities at various timescales and therefore the detectability of exoplanets and the mass determination based on this technique. It is necessar…

astro-ph.EP2023★ 18 cited

Preparing an unsupervised massive analysis of SPHERE high contrast data with the PACO algorithm

A. Chomez, A. -M. Lagrange, P. Delorme +9

We aim at searching for exoplanets on the whole ESO/VLT-SPHERE archive with improved and unsupervised data analysis algorithm that could allow to detect massive giant planets at 5…

astro-ph.EP2023★ 28 cited

On the radial distribution of giant exoplanets at Solar System scales

A. -M. Lagrange, F. Philipot, P. Rubini +5

Context. Giant planets play a major role in multiple planetary systems. Knowing their demographics is important to test their overall impact on planetary systems formation. It is a…

astro-ph.SR2023★ 35 cited

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…

astro-ph.SR2022★ 16 cited

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…