The transmission spectrum of the Neptune-mass exoplanet GJ 436b is shown to be featureless, implying that the planet has either a hydrogen-poor atmosphere or a high cloud layer. Two papers in this ...

Using the constrained Nelder-Mead simplex method based on the atmospheric O 2 transmission spectrum, they corrected the atmospheric temperature and pressure distribution, and combined the optimal ...

Figure 1: Earth’s visible and near-infrared transmission and reflection spectra. During a transit, the starlight that passes through the planet’s atmosphere travels through a much larger ...

A transmission spectrum of the exoplanet WASP-39 b captured by JWST’s Near-Infrared Spectrograph (NIRSpec) on July 10, 2022, reveals the first clear evidence for carbon dioxide in a planet outside the ...

More information: Sayyed A. Rafi et al, Evidence of Water Vapor in the Atmosphere of a Metal-Rich Hot Saturn with High-Resolution Transmission Spectroscopy, arXiv (2024). DOI: 10.48550/arxiv.2407. ...

The graph shows the observed transmission spectrum of the habitable zone exoplanet K2-18 b using the JWST MIRI spectrograph. The vertical shows the fraction of star light absorbed in the planet's ...

Atmospheric Reconnaissance of TRAPPIST-1 b with JWST/NIRISS: Evidence for Strong Stellar Contamination in the Transmission Spectra. The Astrophysical Journal Letters , 2023; 955 (1): L22 DOI: 10. ...

Polarized Transmission Spectrum of Earth as Observed ... Transit polarimetry for exoplanets may be useful to detect O2 gas and to probe the latitudinal atmospheric inhomogeneity, and it is thus ...

The seven approximately Earth-sized transiting planets in the TRAPPIST-1 system provide a unique opportunity to explore habitable zone and non-habitable zone small planets within the same system.

The team obtained transmission spectra during four transits of WASP-39b, using three different instruments on JWST: NIRSpec (in two different observing modes), NIRISS, and NIRCam. This yielded ...

To take a spectrum of an exoplanet's atmosphere requires use of a method known as transmission spectroscopy. When a planet transits between its star and our vantage point on Earth, much of the ...