146 citations · 637 across the 10 of their papers we have counts for
10 papers
Effect of stellar flares on the upper atmospheres of HD 189733b and HD 209458b
J. M. Chadney, T. T. Koskinen, M. Galand +2
Stellar flares are a frequent occurrence on young low-mass stars around which many detected exoplanets orbit. Flares are energetic, impulsive events, and their impact on exoplaneta…
XUV-driven mass loss from extrasolar giant planets orbiting active stars
J. M. Chadney, M. Galand, Y. C. Unruh +2
Upper atmospheres of Hot Jupiters are subject to extreme radiation conditions that can result in rapid atmospheric escape. The composition and structure of the upper atmospheres of…
The large-scale magnetic field and poleward mass accretion of the classical T Tauri star TW Hya
JF Donati, SG Gregory, SHP Alencar +9
We report here results of spectropolarimetric observations of the ~8Myr classical TTauri star (cTTS) TWHya carried out with ESPaDOnS at the Canada-France-Hawaii Telescope (CFHT) in…
Magnetospheric accretion and spin-down of the prototypical classical T Tauri star AATau
JF Donati, MB Skelly, J Bouvier +12
From observations collected with the ESPaDOnS & NARVAL spectropolarimeters at CFHT and TBL, we report the detection of Zeeman signatures on the prototypical classical TTauri star A…
Dynamo Processes in the T Tauri star V410 Tau
M. B. Skelly, J. -F. Donati, J. Bouvier +4
We present new brightness and magnetic images of the weak-line T Tauri star V410 Tau, made using data from the NARVAL spectropolarimeter at Telescope Bernard Lyot (TBL). The bright…
A comparison of measured and simulated solar network contrast
N. Afram, Y. C. Unruh, S. K. Solanki +2
Long-term trends in the solar spectral irradiance are important to determine the impact on Earth's climate. These long-term changes are thought to be caused mainly by changes in th…