INVESTIGADORES
VILLARREAL D'ANGELO Carolina Susana
artículos
Título:
Star-planet interaction through spectral lines
Autor/es:
CAROLINA VILLARREAL D'ANGELO; ALINE VIDOTTO; ALEJANDRO ESQUIVEL; MARIO A. SGRÓ; TOMMY KOSKINEN; LUCA FOSSATI
Revista:
Cambridge University Press
Editorial:
Cambridge University Press
Referencias:
Año: 2020
ISSN:
1743-9213
Resumen:
The growth of spectroscopic observations of exoplanetary systems allows the possibility of testing theoretical models and studying the interaction that exoplanetary atmospheres have with the wind and the energetic photons from the star. In this work, we present a set of numerical 3D simulations of HD 209458b for which spectral lines observations of their evaporative atmosphere are available. The different simulations aim to reproduce different scenarios for the star-planet interaction. With our models, we reconstruct the Ly alpha line during transit and compare with observations. The results allows us to analyse the shape of the line profile under these different scenarios and the comparison with the observations suggest that HD209458b may have a magnetic field off less than 1 G. We also explore the behaviour of the magnesium lines for models with and without magnetic fields.
