150 citations · 752 across the 13 of their papers we have counts for
8 papers · 1 filter
The large-scale magnetic field of Proxima Centauri near activity maximum
Baptiste Klein, Jean-François Donati, Élodie M. Hébrard +5
We report the detection of a large-scale magnetic field at the surface of the slowly-rotating fully-convective M dwarf Proxima Centauri. Ten circular polarization spectra, collecte…
Do non-dipolar magnetic fields contribute to spin-down torques?
Victor See, Sean P. Matt, Adam J. Finley +14
Main sequence low-mass stars are known to spin-down as a consequence of their magnetised stellar winds. However, estimating the precise rate of this spin-down is an open problem. T…
Estimating magnetic filling factors from Zeeman-Doppler magnetograms
Victor See, Sean P. Matt, Colin P. Folsom +15
Low-mass stars are known to have magnetic fields that are believed to be of dynamo origin. Two complementary techniques are principally used to characterise them. Zeeman-Doppler im…
SPIRou Input Catalog: Activity, Rotation and Magnetic Field of Cool Dwarfs
C. Moutou, E. M. Hebrard, J. Morin +7
Based on optical high-resolution spectra obtained with CFHT/ESPaDOnS, we present new measurements of activity and magnetic field proxies of 442 low-mass K5-M7 dwarfs. The objects w…
A deep staring campaign in the Sigma Orionis cluster. Variability in substellar members
P. Elliott, A. Scholz, R. Jayawardhana +2
Deep optical imaging is used to study time-domain properties of young brown dwarfs in sigma Orionis over typical rotational time-scales and to search for new substellar and planeta…
Studying stellar spin-down with Zeeman-Doppler magnetograms
V. See, M. Jardine, A. A. Vidotto +11
Magnetic activity and rotation are known to be intimately linked for low-mass stars. Understanding rotation evolution over the stellar lifetime is therefore an important goal withi…
A hot Jupiter orbiting a 2-Myr-old solar-mass T Tauri star
JF Donati, C Moutou, L Malo +11
Hot Jupiters are giant Jupiter-like exoplanets that orbit 100x closer to their host stars than Jupiter does to the Sun. These planets presumably form in the outer part of the primo…
Could a change in magnetic field geometry cause the break in the wind-activity relation?
A. A. Vidotto, J. -F. Donati, M. Jardine +8
Wood et al suggested that mass-loss rate is a function of X-ray flux () for dwarf stars with erg cm s.…