Physics Today, 2013 Twenty years ago planets orbiting faraway stars were the stuff of science fiction. Now their atmospheric composition and even their weather are being revealed by sensitive spectral measurements.
openaire +2 more sources
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
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Ranges of Atmospheric Mass and Composition of Super Earth Exoplanets [PDF]
, 2008 Terrestrial-like exoplanets may obtain atmospheres from three primary sources: Capture of nebular gases, degassing during accretion, and degassing from subsequent tectonic activity.
Burbine T. H. +5 more
core +1 more source
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
The Ultraviolet Radiation Environment Around M dwarf Exoplanet Host Stars [PDF]
, 2012 The spectral and temporal behavior of exoplanet host stars is a critical input to models of the chemistry and evolution of planetary atmospheres. At present, little observational or theoretical basis exists for understanding the ultraviolet spectra of M ...
Bushinsky, Rachel +10 more
core +4 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
Exoplanet secondary atmosphere loss and revival [PDF]
Proceedings of the National Academy of Sciences, 2020 SignificanceEarth and Venus have significant atmospheres, but Mercury does not. Thousands of exoplanets are known, but we know almost nothing about rocky exoplanet atmospheres. Many rocky exoplanets were formed by a sub-Neptune-to-super-Earth conversion process during which planets lose most of their H2-rich (primary) atmospheres and are reduced in ...
Edwin S. Kite, Megan N. Barnett
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Exoplanet Characterization by Multi-Observatory Transit Photometry with TESS and CHEOPS [PDF]
, 2017 Space-based photometric surveys have discovered large numbers of planets transiting other stars, but these observe in a single band-pass and yield only the planet radius, orbital period, and transit duration.
Gaidos, E., Heng, K., Kitzmann, D.
core +2 more sources
High-resolution Transmission Spectroscopy of the Terrestrial Exoplanet GJ 486b
The Astronomical Journal, 2023 Terrestrial exoplanets orbiting M-dwarf stars are promising targets for transmission spectroscopy with existing or near-future instrumentation. The atmospheric composition of such rocky planets remains an open question, especially given the high X-ray ...
Andrew Ridden-Harper +13 more
doaj +1 more source
The Status of Spectroscopic Data for the Exoplanet Characterisation Missions [PDF]
, 2014 The status of laboratory spectroscopic data for exoplanet characterisation missions such as EChO is reviewed. For many molecules (eg H2O, CO, CO2, H3+, O2, O3) the data are already available.
Tennyson, Jonathan, Yurchenko, Sergei N.
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