Speaker
Dr
Mitchell Young
(University of Oxford)
Description
Ultra-hot Jupiters (UHJs) have become prime targets for atmospheric characterisation. KELT-9b is the hottest of the known UHJs and both hydrogen Balmer lines and metal line features have been detected in the planetary transmission spectrum. I will show how NLTE effects drive the temperature pressure structure of KELT-9b's atmosphere and that NLTE effects must be taken into account in order to reproduce the observations. I will show how our NLTE models have enabled the direct observational detection of NLTE effects in the atmosphere of KELT-9b at the position of both hydrogen and metal line features. Finally, I will show that the NLTE models further place strong constraints on velocities in the planetary atmosphere.
Primary author
Co-authors
Dr
Mitchell Young
(University of Oxford)
Dr
Denis Shulyak
(Instituto de Astrofísica de Andalucía)
Prof.
Tommi Koskinen
(University of Arizona)
Dr
Francesco Borsa
(INAF Brera)
