Publications (7)
Origin of the wide-angle hot H2 in DG Tauri: New insight from SINFONI spectro-imaging
Vanessa Agra-Amboage, S. Cabrit, C. Dougados +3
We wish to test the origins proposed for the extended hot H2 at 2000K around the atomic jet from the T Tauri star DGTau, in order to constrain the wide-angle wind structure and the…
Tides and Tidal Engulfment in Post-Main Sequence Binaries: Period Gaps for Planets and Brown Dwarfs Around White Dwarfs
J. Nordhaus, D. S. Spiegel, L. Ibgui +2
The presence of a close, low-mass companion is thought to play a substantial and perhaps necessary role in shaping post-Asymptotic Giant Branch and Planetary Nebula outflows. Durin…
Radiative accretion shocks along nonuniform stellar magnetic fields in classical T Tauri stars
S. Orlando, R. Bonito, C. Argiroffi +9
(abridged) AIMS. We investigate the dynamics and stability of post-shock plasma streaming along nonuniform stellar magnetic fields at the impact region of accretion columns. We stu…
YSO accretion shocks: magnetic, chromospheric or stochastic flow effects can suppress fluctuations of X-ray emission
T. Matsakos, J. -P. Chièze, C. Stehlé +9
Context. Theoretical arguments and numerical simulations of radiative shocks produced by the impact of the accreting gas onto young stars predict quasi-periodic oscillations in the…
IRIS: A Generic Three-Dimensional Radiative Transfer Code
L. Ibgui, I. Hubeny, T. Lanz +1
We present IRIS, a new generic three-dimensional (3D) spectral radiative transfer code that generates synthetic spectra, or images. It can be used as a diagnostic tool for comparis…
Optical Albedo Theory of Strongly-Irradiated Giant Planets: The Case of HD 209458b
A. Burrows, L. Ibgui, I. Hubeny
We calculate a new suite of albedo models for close-in extrasolar giant planets and compare with the recent stringent upper limit for HD 209458b of Rowe et al. using MOST. We find…
Magnetohydrodynamic modeling of the accretion shocks in classical T Tauri stars: the role of local absorption on the X-ray emission
R. Bonito, S. Orlando, C. Argiroffi +5
We investigate the properties of X-ray emission from accretion shocks in classical T Tauri stars (CTTSs), generated where the infalling material impacts the stellar surface. Both o…