7 papers · 1 filter
Magnetic field strengths of hot giant exoplanets consistent with Solar System values
Julia V. Seidel, Vivien Parmentier, Bibiana Prinoth +29
Magnetic fields are ubiquitous in the universe. They play a key role in shaping the activity of stars, the habitability of rocky planets, and the long-term retention of planetary a…
Atmospheric composition and circulation of the ultra-hot Jupiter WASP-121b with joint NIRPS, HARPS and CRIRES+ transit spectroscopy
Valentina Vaulato, Melissa J. Hobson, Romain Allart +57
Ultra-hot Jupiters like WASP-121b provide unique laboratories for studying atmospheric chemistry and dynamics under extreme irradiation. Constraining their composition and circulat…
Parameter degeneracies associated with interpreting HST WFC3 transmission spectra of exoplanetary atmospheres
Aline Novais, Chloe Fisher, Luan Ghezzi +3
The Wide Field Camera 3 (WFC3) instrument on the Hubble Space Telescope has provided an abundance of exoplanet spectra over the years. These spectra have enabled analysis studies u…
CRIRES+ and ESPRESSO reveal an atmosphere enriched in volatiles relative to refractories on the ultra-hot Jupiter WASP-121b
Stefan Pelletier, Björn Benneke, Yayaati Chachan +11
One of the outstanding goals of the planetary science community is to measure the present-day atmospheric composition of planets and link this back to formation. As giant planets a…
Secrets in the shadow: High precision stellar abundances of fast-rotating A-type exoplanet host stars through transit spectroscopy
M. B. Lam, H. J. Hoeijmakers, B. Prinoth +1
Context. The spectra of fast-rotating A-type stars have strongly broadened absorption lines. This effect causes blending of the absorption lines, hindering the measurement of the a…
High-resolution transmission spectroscopy of warm Jupiters: An ESPRESSO sample with predictions for ANDES
Bibiana Prinoth, Elyar Sedaghati, Julia V. Seidel +4
Warm Jupiters are ideal laboratories for testing the limitations of current tools for atmospheric studies. The cross-correlation technique is a commonly used method to investigate…