Results 31 to 40 of about 58,337 (174)
Impact of variable photospheric radius on exoplanet atmospheric retrievals
Monthly Notices of the Royal Astronomical Society: Letters, 2022 ABSTRACT Inverse techniques are used to extract information about an exoplanet’s atmosphere. These techniques are prone to biased results if the appropriate forward model is not used. One assumption used in a forward model is to assume that the radius of the planet is constant with wavelength; however, a more realistic assumption is that
openaire +2 more sources
The Astronomical Journal, 2023 Irradiated Jovian atmospheres are complex and dynamic and can undergo temporal variations due to the close proximity of their parent stars. Of the Jovian planets that have been cataloged to date, KELT-9b is the hottest gas giant known, with an ...
Nataliea Lowson +12 more
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The CARMENES search for exoplanets around M dwarfs. Variability on long timescales as seen in chromospheric indicators [PDF]
Astronomy & Astrophysics, 2022 It is clearly established that the Sun has an 11-year cycle that is caused by its internal magnetic field. This cycle is also observed in a sample of M dwarfs.
B. Fuhrmeister +21 more
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The Variable Detection of Atmospheric Escape around the Young, Hot Neptune AU Mic b
The Astronomical Journal, 2023 Photoevaporation is a potential explanation for several features within exoplanet demographics. Atmospheric escape observed in young Neptune-sized exoplanets can provide insight into and characterize which mechanisms drive this evolution and at what ...
Keighley E. Rockcliffe +7 more
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Atmospheric characterization of hot Jupiters using hierarchical models of Spitzer observations [PDF]
Monthly notices of the Royal Astronomical Society, 2021 The field of exoplanet atmospheric characterization is trending towards comparative studies involving many planetary systems, and using Bayesian hierarchical modelling is a natural next step. Here we demonstrate two use cases. We first use hierarchical
D. Keating, N. Cowan
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The Astrophysical Journal Letters, 2022 Terrestrial exoplanets such as TRAPPIST-1e will be observed in a new capacity with the JWST/Near Infrared Spectrograph (NIRSpec), which is expected to be able to detect CO _2 , CH _4 , and O _2 signals, if present, with multiple coadded transit ...
Yoav Rotman +4 more
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A Test of the Dedalus Software for Exoplanet Atmospheric Dynamics [PDF]
Research Notes of the AASStudying exoplanet flow and variability requires solving atmospheric dynamics equations accurately. Here we use the shallow-water equations to evaluate and employ Dedalus 3, a spectral method-based software package for solving differential equations.
Rick Bonhof, Q. Changeat, J. Cho
semanticscholar +1 more source
Magnetohydrodynamical Torsional Oscillations from Thermoresistive Instability in Hot Jupiters
The Astrophysical Journal, 2023 Hot Jupiter atmospheres may be subject to a thermoresistive instability where an increase in the electrical conductivity due to ohmic heating results in runaway of the atmospheric temperature.
Raphaël Hardy +2 more
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Chasing the storm: Investigating the application of high-contrast imaging techniques in producing precise exoplanet light curves [PDF]
Monthly notices of the Royal Astronomical SocietySubstellar companions such as exoplanets and brown dwarfs exhibit changes in brightness arising from top-of-atmosphere inhomogeneities, providing insights into their atmospheric structure and dynamics.
B. Sutlieff +12 more
semanticscholar +1 more source