69 citations · 329 across the 33 of their papers we have counts for
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Chromaticity of stellar activity in radial velocities : Anti-correlated families of lines on the M dwarf EV Lac with SPIRou and SOPHIE
Pierre Larue, Xavier Delfosse, Andres Carmona +33
Context. In the search for exoplanets using radial velocities (RV), stellar activity has become one of the main limiting factors for detectability. Fortunately, activity-induced RV…
Characterisation of the stellar activity of M dwarfs. II. Relationship between Ca, H, and Na chromospheric emissions
Nadège Meunier, Lucile Mignon, Matthieu Kretzschmar +1
The chromospheric emission estimated in the core of different lines, such as Ca II H & K, Na D1 and D2, and Halpha, is not always correlated between lines, as the Ca II H & K and H…
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…
Near-IR and optical radial velocities of the active M dwarf star Gl 388 (AD Leo) with SPIRou at CFHT and SOPHIE at OHP: A 2.23 day rotation period and no evidence for a corotating planet
A. Carmona, X. Delfosse, S. Bellotti +36
Context: The search for extrasolar planets around the nearest M dwarfs is a crucial step towards identifying the nearest Earth-like planets. One of the main challenges in this sear…
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…
Variability in stellar granulation and convective blueshift with spectral type and magnetic activity. II. From young to old main-sequence K-G-F stars
Nadège Meunier, Lucile Mignon, Anne-Marie Lagrange
The inhibition of small-scale convection in the Sun dominates the long-term radial velocity (RV) variability: it therefore has a critical effect on light exoplanet detectability us…