RADTRANS Archives

Two orders of high-resolution spectra with the best-fit model overplotted in yellow for each target. The observation on the first day (September 21, 2022) is chosen for 2MASS J0249-0557 c. The wavelength range is selected to include the 12CO and 13CO bandheads. -- astro-ph.EP

Astronomy & Telescopes, Atmospheres, Climate, Weather, Beta Pictoris, Brown Dwarfs, Exoplanets, -moons, -comets, Gas Giants, Status Report

Chemistry And Isotope Ratios Of Substellar Atmospheres In The β Pictoris Young Moving Group

by Keith CowingMay 6, 2026May 6, 2026

Measuring the chemical and isotopic compositions of gas giants and brown dwarfs provides insights into their formation pathways and birth environments. 2MASS J0249-0557 c is an L2-type planetary mass companion […]

The cloud structure and transmission spectrum of a sub-Neptune planet with physical properties similar to GJ 1214 b. The condensate species considered here is NaCl, KCl and ZnS. In the left panel, the meaning of each line is the same as Figure 8. The cloud is dominated by Na2S (upper part) and NaCl (cloud bottom). The right panel shows the synthetic spectrum and the blue line shows one set of parameters that leads to flat spectrum in 1 to 2 µm range, consistent with observation (Kreidberg et al. 2014). -- astro-ph.EP

AI - Data - Apps - Cybernetics, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report

ExoLyn: A Golden Mean Approach To Multi-species Cloud Modelling In Atmospheric Retrieval

by Keith CowingOctober 1, 2024October 1, 2024

Context. Clouds are ubiquitous in exoplanets’ atmospheres and play an important role in setting the opacity and chemical inventory of the atmosphere. Understanding clouds is a critical step in interpreting […]