Context. Young brown dwarfs exhibit atmospheric characteristics similar to those of super-
Jupiters, providing a unique opportunity to study planetary atmospheres. Atmospheric …

Context. The carbon isotope ratio is a powerful tool for studying the evolution of stellar
systems due to its sensitivity to the local chemical environment. Recent detections of CO …

High-resolution spectroscopic characterization of young super-Jovian planets enables
precise constraints on elemental and isotopic abundances of their atmospheres. As part of …

Young, self-luminous super-Jovian companions discovered by direct imaging provide a
challenging test for planet formation and evolution theories. By spectroscopically …

The elemental and isotopic abundances of volatiles like carbon, oxygen, and nitrogen may
trace a planet's formation location relative to H 2 O, CO 2, CO, NH 3, and N 2" snowlines," or …

Context. The carbon isotope ratio (12 C/13 C) is a potential tracer of giant planet and brown
dwarf formation. The GQ Lup system, which hosts the K7 T Tauri star GQ Lup A and its …

ABSTRACT A growing number of directly-imaged companions have been recently
characterized, with robust constraints on carbon-to-oxygen ratios and even isotopic ratios …

State-of-the-art JWST observations are unveiling unprecedented views into the atmospheres
of substellar objects in the infrared, further highlighting the importance of clouds. Current …

For modeling the spectra of exoplanets one must know their atmospheric composition. This
is necessary because the abundance of molecules, atoms, ions and condensates is needed …