Results 91 to 100 of about 740,794 (260)
The Astrophysical Journal, 2023 In order to understand the results of recent observations of exoplanets, models have become increasingly complex. Unfortunately, this increases both the computational cost and output size of said models.
F. Sainsbury-Martinez +5 more
doaj +1 more source
Atmospheric Circulation of Terrestrial Exoplanets [PDF]
, 2013 The investigation of planets around other stars began with the study of gas giants, but is now extending to the discovery and characterization of super-Earths and terrestrial planets. Motivated by this observational tide, we survey the basic dynamical principles governing the atmospheric circulation of terrestrial exoplanets, and discuss the ...
Showman, Adam P. +3 more
openaire +4 more sources
Spectral Retrieval with JWST Photometric data: a Case Study for HIP 65426 b
The Astronomical Journal, 2023 Half of the JWST high-contrast imaging objects will only have photometric data as of Cycle 2. However, to better understand their atmospheric chemistry that informs formation origin, spectroscopic data are preferred.
Ji Wang
doaj +1 more source
Outstanding Challenges of Exoplanet Atmospheric Retrievals [PDF]
Space Science Reviews, 2020 Spectral retrieval has long been a powerful tool for interpreting planetary remote sensing observations. Flexible, parameterised, agnostic models are coupled with inversion algorithms in order to infer atmospheric properties directly from observations, with minimal reliance on physical assumptions. This approach, originally developed for application to
Kevin Heng +2 more
openaire +5 more sources
Exoplanet albedo spectra and colors as a function of planet phase, separation, and metallicity [PDF]
, 2010 First generation optical coronagraphic telescopes will obtain images of cool gas and ice giant exoplanets around nearby stars. The albedo spectra of exoplanets at planet-star separations larger than about 1 AU are dominated by reflected light to beyond 1
Ackerman +58 more
core +2 more sources
Clouds in Exoplanetary Atmospheres [PDF]
, 2020 Today, we know ~4330 exoplanets orbiting their host stars in ~3200 planetary systems. The diversity of these exoplanets is large, and none of the known exoplanets is a twin to any of the solar system planets, nor is any of the known extrasolar planetary systems a twin of the solar system.
arxiv +1 more source
Controls of Atmospheric Methane on Early Earth and Inhabited Earth-like Terrestrial Exoplanets [PDF]
, 2023 Methane (CH4) is a primarily biogenic greenhouse gas. As such, it represents an essential biosignature to search for life on exoplanets. Atmospheric CH4 abundance on Earth-like inhabited exoplanets is likely controlled by marine biogenic production and atmospheric photochemical consumption.
arxiv +1 more source
The spectrum of hot methane in astronomical objects using a comprehensive computed line list [PDF]
, 2014 Hot methane spectra are important in environments ranging from flames to the atmospheres of cool stars and exoplanets. A new spectroscopic line list, 10to10, for $^{12}$CH$_4$ containing almost 10 billion transitions is presented. This comprehensive line
Bailey, Jeremy +4 more
core +2 more sources
Retrieving Temperatures and Abundances of Exoplanet Atmospheres with High-resolution Cross-correlation Spectroscopy [PDF]
Astronomical Journal, 2018 High-resolution spectroscopy (R ≥ 25,000) has recently emerged as one of the leading methods for detecting atomic and molecular species in the atmospheres of exoplanets.
M. Brogi, M. Line
semanticscholar +1 more source
Hα Absorption in Transiting Exoplanet Atmospheres [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractRecent observations by Jensen et al. of Hα absorption by the upper atmosphere of HD189733b have motivated the need for a theoretical understanding of the distribution of n=2 hydrogen within hot Jupiter atmospheres. With this in mind, we model the n=2 state of atomic hydrogen in a hydrostatic atmosphere in thermal and photoionization equilibrium.
Phil Arras, Zhi-Yun Li, Duncan Christie
openaire +5 more sources