Results 61 to 70 of about 740,794 (260)
The Astrophysical Journal, 2023 The near-infrared transmission spectrum of the warm sub-Neptune exoplanet GJ 1214 b has been observed to be flat and featureless, implying a high metallicity atmosphere with abundant aerosols.
Peter Gao +14 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 We present the first exoplanet phase-curve measurement made with the JWST NIRSpec instrument, highlighting the exceptional stability of this newly commissioned observatory for exoplanet climate studies.
Thomas Mikal-Evans +12 more
doaj +1 more source
The Runaway Greenhouse on Sub-Neptune Waterworlds
The Astrophysical Journal, 2023 The implications of the water vapor runaway greenhouse phenomenon for water-rich sub-Neptunes are developed. In particular, the nature of the postrunaway equilibration process for planets that have an extremely high water inventory is addressed. Crossing
Raymond T. Pierrehumbert
doaj +1 more source
HyDRo: Atmospheric Retrieval of Rocky Exoplanets in Thermal Emission [PDF]
, 2021 Emission spectroscopy is a promising technique to observe atmospheres of rocky exoplanets, probing both their chemistry and thermal profiles. We present HyDRo, an atmospheric retrieval framework for thermal emission spectra of rocky exoplanets. HyDRo does not make prior assumptions about the background atmospheric composition, and can therefore be used
arxiv +1 more source
Atmospheric Seasonality as an Exoplanet Biosignature [PDF]
The Astrophysical Journal Letters, 2018 Abstract Current investigations of exoplanet biosignatures have focused on static evidence of life, such as the presence of biogenic gases like O2 or CH4. However, the expected diversity of terrestrial planet atmospheres and the likelihood of both “false positives” and “false negatives” for conventional biosignatures motivate exploration
Victoria S. Meadows +12 more
openaire +6 more sources
Haze Formation in Warm H2-rich Exoplanet Atmospheres [PDF]
The Planetary Science Journal, 2020 New observing capabilities coming online over the next few years will provide opportunities for characterization of exoplanet atmospheres. However, clouds/hazes could be present in the atmospheres of many exoplanets, muting the amplitude of spectral ...
Chao He +10 more
openalex +2 more sources
The ARCiS framework for exoplanet atmospheres [PDF]
, 2020 Aims: ARCiS, a novel code for the analysis of exoplanet transmission and emission spectra is presented. The aim of the modelling framework is to provide a tool able to link observations to physical models of exoplanet atmospheres.
M. Min +4 more
semanticscholar +1 more source
A Multiple Scattering Polarized Radiative Transfer Model: Application to HD 189733b [PDF]
, 2015 We present a multiple scattering vector radiative transfer model which produces disk integrated, full phase polarized light curves for reflected light from an exoplanetary atmosphere.
Kopparla, Pushkar +5 more
core +2 more sources
Retrieving C and O Abundance of HR 8799 c by Combining High- and Low-resolution Data
The Astronomical Journal, 2022 The formation and evolution pathway for the directly imaged multiplanetary system HR 8799 remains mysterious. Accurate constraints on the chemical composition of the planetary atmosphere(s) are key to solving the mystery.
Ji Wang +31 more
doaj +1 more source
Exploring Climate with Obliquity in a Variable-eccentricity Earth-like World
The Astronomical Journal, 2023 Exploring planetary systems similar to our solar system can provide a means to explore a large range of possibly temperate climates on Earth-like worlds.
M. J. Way +2 more
doaj +1 more source