50 citations · 166 across the 7 of their papers we have counts for
7 papers · 1 filter
Planetary atmospheric escape and disk formation around WDJ0914+1914
C. Villarreal D'Angelo, M. P. Ronco, M. R. Schreiber +3
The spectrum of the white dwarf WD J091405.30+191412.25 displays the absorption and double-peaked emission lines of the volatiles hydrogen, oxygen, and sulfur. This unique characte…
The effects of stellar activity cycles on planetary atmospheric escape and the HeI 1083nm transit signature
Andrew P. Allan, Aline A. Vidotto, Jorge Sanz-Forcada +1
The HeI 1083nm transit signature is commonly used in tracing escaping planetary atmospheres. However, it can be affected by stellar activity, complicating detections and interpreta…
Evolution of helium triplet transits of close-in gas giants orbiting K-dwarfs
Andrew P. Allan, Aline A. Vidotto, Carolina Villarreal D'Angelo +2
Atmospheric escape in exoplanets has traditionally been observed using hydrogen Lyman- and H- transmission spectroscopy, but more recent detections have utilised the metastab…
The Effects of Magnetic Fields on Observational Signatures of Atmospheric Escape in Exoplanets: Double Tail Structures
S. Carolan, A. A. Vidotto, G. Hazra +2
Using 3D radiative MHD simulations and Lyman- transit calculations, we investigate the effect of magnetic fields on the observational signatures of atmospheric escape in exoplan…
Effects of the stellar wind on the Ly-alpha transit of close-in planets
S. Carolan, A. A. Vidotto, C. Villarreal D'Angelo +1
We use 3D hydrodynamics simulations followed by synthetic line profile calculations to examine the effect increasing the strength of the stellar wind has on observed Ly- transit…
The multi-planet system TOI-421 -- A warm Neptune and a super puffy mini-Neptune transiting a G9 V star in a visual binary
Ilaria Carleo, Davide Gandolfi, Oscar Barragán +110
We report the discovery of a warm Neptune and a hot sub-Neptune transiting TOI-421 (BD-14 1137, TIC 94986319), a bright (V=9.9) G9 dwarf star in a visual binary system observed by…