Results 131 to 140 of about 517 (155)
Impact of photochemical hazes and gases on exoplanet atmospheric thermal structure [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT We investigate the impact of photochemical hazes and disequilibrium gases on the thermal structure of hot Jupiters, using a detailed 1D radiative-convective model. We find that the inclusion of photochemical hazes results in major heating of the upper and cooling of the lower atmosphere.
Panayotis Lavvas
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Vertical structure of an exoplanet’s atmospheric jet stream
NatureUltra-hot Jupiters, an extreme class of planets not found in our solar system, provide a unique window into atmospheric processes. The extreme temperature contrasts between their day- and night-sides pose a fundamental climate puzzle: how is energy distributed?
Julia Victoria Seidel +2 more
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Effects of a fully 3D atmospheric structure on exoplanet transmission spectra: retrieval biases due to day–night temperature gradients [PDF]
Astronomy and Astrophysics, 2019 Transmission spectroscopy provides us with information on the atmospheric properties at the limb, which is often intuitively assumed to be a narrow annulus around the planet. Consequently, studies have focused on the effect of atmospheric horizontal heterogeneities along the limb.
Jeremy Leconte +2 more
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Data structures for ExoMol: Molecular line lists for exoplanet and other atmospheres
AIP Conference Proceedings, 2013At elevated temperatures the spectra of polyatomic molecules become extremely complicated with millions, or even billions, of transitions potentially playing an important role. The atmospheres of cool stars and “hot Jupiter” extrasolar planets are rich with molecules in the temperature range 1000 to 3000 K and their properties are strongly influenced ...
Jonathan Tennyson +2 more
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Interior structure, mantle-atmosphere co-evolution, and habitability of low-mass exoplanets
2023Um grundlegende Fragen der Planetenforschung zu beantworten, ist ein fundiertes Verständnis der Zusammensetzung und der Prozesse im Inneren von Exoplaneten eine essenzielle Voraussetzung. Solche Fragen beinhalten beispielsweise, welche Arten von Planeten es geben könnte, welche Mechanismen die Planetenentstehung und -entwicklung steuern, wie ...
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Science (New York, N.Y.), 2014
Exoplanets that orbit close to their host stars are much more highly irradiated than their solar system counterparts. Understanding the thermal structures and appearances of these planets requires investigating how their atmospheres respond to such extreme stellar forcing.
Kevin B, Stevenson +15 more
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Exoplanets that orbit close to their host stars are much more highly irradiated than their solar system counterparts. Understanding the thermal structures and appearances of these planets requires investigating how their atmospheres respond to such extreme stellar forcing.
Kevin B, Stevenson +15 more
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Impact of photochemical hazes on the thermal structure of exoplanet atmospheres
Transit observations reveal that a significant population of the detected exoplanets has hazy atmospheres (Sing et al. 2016). Although the relative contribution of clouds and photochemical aerosols is not yet fully clarified, the impact of haze particles on the thermal structure could be significant, as such particles can efficiently scatter and absorbPanayotis Lavvas, Anthony Arfaux
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Astronomičeskij žurnal
The work carried out an analysis and interpretation of light curves obtained with observing with the HST telescope the transit of the exoplanet HD 189733 b across the disk of the star. Observations were carried out in a wide range of wavelengths 5500–10500 Å, which made it possible to identify the relationship between the wavelength and the data ...
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The work carried out an analysis and interpretation of light curves obtained with observing with the HST telescope the transit of the exoplanet HD 189733 b across the disk of the star. Observations were carried out in a wide range of wavelengths 5500–10500 Å, which made it possible to identify the relationship between the wavelength and the data ...
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Modern astronomy: from the Early Universe to exoplanets and black holes
The paper presents a study of the exoplanet HD 189733 b based on the multicolor photometric observations obtained by the Hubble Space Telescope as well as on the equipment of the Caucasian Mountain Observatory. It is shown that with all other parameters fixed, the radius of the planet obtained from the interpretation of the light curves varies, which ...
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The paper presents a study of the exoplanet HD 189733 b based on the multicolor photometric observations obtained by the Hubble Space Telescope as well as on the equipment of the Caucasian Mountain Observatory. It is shown that with all other parameters fixed, the radius of the planet obtained from the interpretation of the light curves varies, which ...
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Aura-3D: A Three-dimensional Atmospheric Retrieval Framework for Exoplanet Transmission Spectra
Astrophysical Journal, 2022Matthew Nixon, Nikku Madhusudhan
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