Results 31 to 40 of about 3,353,500 (213)
Exoplanet Atmospheric Studies At High Spectral Resolution
, 2020 The study of exoplanet atmospheres is essential to understand the formation, evolution and composition of exoplanets. When a planet pass between its host star and an observer, a fraction of the star-light is absorbed by its atmosphere, thus revealing its
Allart, Romain
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AURA-3D: Three-dimensional Atmospheric Retrieval of Exoplanet Transmission Spectra
, 2023 This poster provides a summary of the following paper: "Aura-3D: A Three-dimensional Atmospheric Retrieval Framework for Exoplanet Transmission Spectra", Nixon & Madhusudhan 2022, ApJ, 935, 73N It was presented at the STScI Spring Symposium ...
Nixon, Matthew Conor, Madhusudhan, Nikku
core +1 more source
Detection of Atmospheric Escape from Four Young Mini-Neptunes
The Astronomical Journal, 2023 We use Keck/NIRSPEC to survey a sample of of young (
Michael Zhang +7 more
doaj +1 more source
Unveiling the atmospheric evolution of exoplanets
, 2021 A thorough characterisation of an exoplanetary system includes also studying the evolution of planetary atmospheres. To this end, we developed a custom tool to estimate the atmospheric content of exoplanets at the dispersal of the protoplanetary disk accounting for the present day system observables. In detail, our tool relies on planetary evolutionary
openaire +1 more source
On the relative importance of AGN winds for the evolution of exoplanet atmospheres
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Recent work investigating the impact of winds and outflows from active galactic nuclei (AGNs) on the habitability of exoplanets suggests that such activity could be deleterious for the long-term survival of planetary atmospheres and the habitability of planets subject to such winds.
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Spectral evolution of gaseous exoplanet atmospheres due to hydrodynamic escape
, 2023 The evolution of stars on grand time-scales affect their surroundings in many ways. Due to their intrinsic rotation, causing strong magnetic activity, they vary greatly in radiative activity in X-ray and ultraviolet (XUV) throughout their lifetime. Planets orbiting these stars close-in could, consequently, be affected by these drastic radiative changes.
Amy Louca, Yamila Miguel
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Zodiacal exoplanets in time – XIII. Planet orbits and atmospheres in the V1298 Tau system, a keystone in studies of early planetary evolution [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Studies of planetary systems of stars in star-forming regions and young clusters open a window on the formative stages of planetary evolution. We obtained high-cadence high-resolution infrared spectroscopy of the solar-mass Taurus association-member V1298 Tau during a transit of its 10R⊕-size ‘b’ planet. We measured the systemic
E Gaidos +18 more
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Towards a Theory for the Atmospheres, Structure, and Evolution of Giant Exoplanets [PDF]
Proceedings of the International Astronomical Union, 2011 AbstractIn this short review, I summarize some of the salient features of the emerging theory of exoplanets in general, and of giant exoplanets in particular. A focus is on the characterization of transiting planets at primary and secondary eclipse, but various other related topics are covered, if only briefly.
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Spin evolution of Earth-sized exoplanets, including atmospheric tides and core–mantle friction [PDF]
International Journal of Astrobiology, 2014 AbstractPlanets with masses between 0.1 and 10 M⊕are believed to host dense atmospheres. These atmospheres can play an important role on the planet's spin evolution, since thermal atmospheric tides, driven by the host star, may counterbalance gravitational tides. In this work, we study the long-term spin evolution of Earth-sized exoplanets.
Cunha, Diana +2 more
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A new set of atmosphere and evolution models for cool T–Y brown dwarfs and giant exoplanets [PDF]
Astronomy & Astrophysics, 2020 We present a new set of solar metallicity atmosphere and evolutionary models for very cool brown dwarfs and self-luminous giant exoplanets, which we term ATMO 2020. Atmosphere models are generated with our state-of-the-art 1D radiative-convective equilibrium code ATMO
M. W. Phillips +8 more
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