Speaker
Description
High-resolution spectroscopy (HRS) is a powerful tool for studying the atmospheres of planetary-mass objects, including brown dwarfs and exoplanets. By analysing the fine details in near-infrared spectra, we can detect absorption features from key molecules and their isotopic variants, revealing the chemical composition of these sub-stellar objects. Such measurements offer clues about their formation history and provide insights into dynamic atmospheric processes such as vertical mixing. Additionally, broad absorption lines of sodium and potassium serve as indicators of surface gravity, but fully interpreting these features requires accounting for subtle distortions in their shapes. HRS also allows us to study cloud properties, including atmospheric variability and surface inhomogeneities.
To illustrate the power of HRS, I will present an analysis of multi-wavelength CRIRES+ spectra of Luhman 16AB, the closest known brown dwarf binary, observed as part of the ESO SupJup Survey. These findings demonstrate the exciting potential of HRS to improve our understanding of sub-stellar atmospheres and pave the way for future studies of lower-mass exoplanets with next-generation telescopes.
| Talk category | NOVA Network 2 |
|---|---|
| Preference for a talk or poster | Talk |
| Talk preference for PhD students | 3rd year |
