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The UVS instrument on the Juno mission records far-ultraviolet reflected sunlight from Jupiter. These spectra are sensitive to the abundances of chemical species in the upper atmosphere and to the distribution of the stratospheric haze…

Photochemical hazes are expected to form in hot Jupiter atmospheres and may explain the strong scattering slopes and muted spectral features observed in the transmission spectra of many hot Jupiters. Absorption and scattering by…

Rotational modulations are observed on brown dwarfs and directly imaged exoplanets, but the underlying mechanism is not well understood. Here, we analyze Jupiter's rotational light curves at 12 wavelengths from the ultraviolet (UV) to the…

We present the results from the simulations of the atmospheres of hot-Jupiters HD189733b, HD209458b and WASP-39b, assuming the presence of three different types of haze. Using a 3D General Circulation Model, the Unified Model, we capture…

Spatially resolved maps of Jupiter's far-infrared 17-37 $\mu$m hydrogen-helium collision-induced spectrum were acquired by the FORCAST instrument on the Stratospheric Observatory for Infrared Astronomy (SOFIA) in May 2014. Spectral scans in…

地球与行星天体物理 · 物理学 2016-10-06 Leigh N. Fletcher , I. de Pater , W. T. Reach , M. Wong , G. S. Orton , P. G. J. Irwin , R. D. Gehrz

Current understanding of the ammonia distribution in Jupiter's atmosphere is provided by observations from major ground-based facilities and spacecraft, and analyzed with sophisticated retrieval models that recover high fidelity…

地球与行星天体物理 · 物理学 2024-07-26 Steven M Hill , Patrick G. J. Irwin , Charlotte Alexander , John H. Rogers

We present a computationally efficient 1-D seasonal radiative model, with convective adjustment, of Jupiter's atmosphere. Our model takes into account radiative forcings from the main hydrocarbons (methane, ethane, acetylene), ammonia,…

地球与行星天体物理 · 物理学 2020-11-13 Sandrine Guerlet , Aymeric Spiga , Thierry Fouchet , Hugues Delattre

Mid-infrared 7-20 $\mu$m imaging of Jupiter demonstrates that the increased albedo of Jupiter's South Equatorial Belt (SEB) during the `fade' (whitening) event of 2009-2010 was correlated with changes to atmospheric temperature and aerosol…

Global maps of Jupiter's atmospheric temperatures, gaseous composition and aerosol opacity are derived from a programme of 5-20 $\mu$m mid-infrared spectroscopic observations using the Texas Echelon Cross Echelle Spectrograph (TEXES) on…

地球与行星天体物理 · 物理学 2017-06-14 L. N. Fletcher , T. K. Greathouse , G. S. Orton , J. A. Sinclair , R. S. Giles , P. G. J. Irwin , T. Encrenaz

The Cassini spacecraft made a gravity assist flyby of Jupiter in December 2000. The Imaging Science Subsystem (ISS) acquired images of the planet that covered the visual range with filters sensitive to the distribution of clouds and hazes,…

地球与行星天体物理 · 物理学 2019-05-09 Iñaki Ordóñez-Etxeberria , Ricardo Hueso , Agustin Sánchez-Lavega , Santiago Pérez-Hoyos

We present mid-infrared spectroscopy of Jupiter's mid-to-high latitudes using Gemini-North/TEXES (Texas Echelon Cross Echelle Spectrograph) on March 17-19, 2017. These observations capture Jupiter's hydrocarbon auroral emissions before,…

Currently, the analysis of transmission spectra is the most successful technique to probe the chemical composition of exoplanet atmospheres. But the accuracy of these measurements is constrained by observational limitations and the…

地球与行星天体物理 · 物理学 2015-06-23 P. Montañes-Rodriguez , B Gonzalez-Merino , E. Palle , M. Lopez-Puertas , E. Garcia-Melendo

We report results of a Hubble Space Telescope (HST) campaign with the Advanced Camera for Surveys to observe Europa at eastern elongation, i.e. Europa's leading side, on 2008 June 29. With five consecutive HST orbits, we constrain Europa's…

Photochemical hazes have been suggested as candidate for the high-altitude aerosols observed in the transmission spectra of many hot Jupiters. We present 3D simulations of the hot Jupiter HD 189733b to study how photochemical hazes are…

地球与行星天体物理 · 物理学 2024-08-05 Maria E Steinrueck , Adam P. Showman , Panayotis Lavvas , Tommi Koskinen , Xianyu Tan , Xi Zhang

We observed Jupiter four times over a full rotation (10 hrs) with the upgraded Karl G. Jansky Very Large Array (VLA) between December 2013 and December 2014. Preliminary results at 4-17 GHz were presented in de Pater et al. (2016); in the…

地球与行星天体物理 · 物理学 2019-02-21 I. de Pater , R. J. Sault , M. H. Wong , L. N. Fletcher , D. DeBoer , B. Butler

Two independent investigations of the atmosphere of the hot Jupiter HAT-P-12b by two different groups resulted in discrepant solutions. Using broad-band photometry from the ground, one study found a flat and featureless transmission…

地球与行星天体物理 · 物理学 2022-01-21 X. Alexoudi , M. Mallonn , C. von Essen , J. D. Turner , E. Keles , J. Southworth , L. Mancini , S. Ciceri , T. Granzer , C. Denker , E. Dineva , K. G. Strassmeier

Spectroscopic observations of a transit event of an extrasolar planet offer the opportunity to study the composition of the planetary atmosphere. We observed a transit of the inflated Hot Jupiter HAT-P-32b with MODS at the LBT to…

地球与行星天体物理 · 物理学 2016-05-25 Matthias Mallonn , Klaus G. Strassmeier

Haze in Pluto's atmosphere was detected in images by both the Long Range Reconnaissance Imager (LORRI) and the Multispectral Visible Imaging Camera (MVIC) on New Horizons. LORRI observed haze up to altitudes of at least 200 km above Pluto's…

UV observations with Cassini ISS Narrow Angle Camera of Titan's detached haze is an excellent tool to probe its aerosols content without being affected by the gas or the multiple scattering. Unfortunately, its low extent in altitude…

地球与行星天体物理 · 物理学 2017-04-05 Benoît Seignovert , Pascal Rannou , Panayotis Lavvas , Thibaud Cours , Robert A. West

Jupiter's tropospheric ammonia (NH\textsubscript{3}) abundance is studied using spatially-resolved 5-\textmu m observations from CRIRES, a high resolution spectrometer at the European Southern Observatory's Very Large Telescope. The high…

地球与行星天体物理 · 物理学 2017-12-27 Rohini S. Giles , Leigh N. Fletcher , Patrick G. J. Irwin , Glenn S. Orton , James A. Sinclair
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