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相关论文: Spatial Variations of Jovian Tropospheric Ammonia …

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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

The vertical distribution of trace gases in planetary atmospheres can be obtained with observations of the atmosphere's thermal emission. Inverting radio observations to recover the atmospheric structure, however, is non-trivial, and the…

地球与行星天体物理 · 物理学 2025-02-25 Chris Moeckel , Imke de Pater , David DeBoer

We present a new set of measurements obtained with the Combined Array for Research in Millimeter-wave Astronomy (CARMA) of Jupiter's microwave thermal emission near the 1.3 cm ammonia (NH$_{3}$) absorption band. We use these observations to…

地球与行星天体物理 · 物理学 2018-03-14 Ramsey L. Karim , David DeBoer , Imke de Pater , Garrett K. Keating

$Context.$ On October 31, 2009, the Photodetector Array Camera and Spectrometer (PACS) on board the Herschel Space Observatory observed far-infrared spectra of Jupiter between 50 and 220$\,\mu$m as part of the program "Water and Related…

地球与行星天体物理 · 物理学 2024-06-05 Cyril Gapp , Miriam Rengel , Paul Hartogh , Hideo Sagawa , Helmut Feuchtgruber , Emmanuel Lellouch , Geronimo L. Villanueva

Observations of Jupiter's deep atmosphere by the Juno spacecraft have revealed several puzzling facts: The concentration of ammonia is variable down to pressures of tens of bars, and is strongly dependent on latitude. While most latitudes…

We present the results of the Infrared Space Observatory Short Wavelength Spectrometer (ISO-SWS) observations of Jupiter related to ammonia. We focus on two spectral regions; the first one (the 10-micron region), probes atmospheric levels…

At wavelengths between 0.15 and 0.19 $\mu$m, the far-ultraviolet spectrum of Jupiter is dominated by the scattered solar spectrum, attenuated by molecular absorptions primarily by acetylene and ethane, and to a lesser extent ammonia and…

地球与行星天体物理 · 物理学 2020-06-10 Henrik Melin , Leigh N. Fletcher , Pat G. J. Irwin , Scott G Edgington

An analysis of currently available ammonia (NH$_3$) visible-to-near-infrared gas absorption data was recently undertaken by Irwin et al. (Icarus, 302 (2018) 426) to help interpret Very Large Telescope (VLT) MUSE observations of Jupiter from…

The intriguing circumpolar cyclone pattern at Jupiter's poles raises fundamental questions about how these systems are organized vertically and, further, how the planet's internal heat shapes and sustains them in the absence of solar…

Future direct-imaging exoplanet missions such as WFIRST/AFTA, Exo-C, and Exo-S will measure the reflectivity of exoplanets at visible wavelengths. The exoplanets to be observed will be located further away from their parent stars than is…

地球与行星天体物理 · 物理学 2014-12-25 Renyu Hu

Recent work by Sromovsky et al. (2017, Icarus 291, 232-244) suggested that all red colour in Jupiter's atmosphere could be explained by a single colour-carrying compound, a so-called 'universal chromophore'. We tested this hypothesis on…

地球与行星天体物理 · 物理学 2019-12-13 Ashwin S. Braude , Patrick G. J. Irwin , Glenn S. Orton , Leigh N. Fletcher

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

Jupiter's tropospheric composition is studied using high resolution spatially-resolved 5-micron observation from the CRIRES instrument at the Very Large Telescope. The high resolving power (R=96,000) allows us to spectrally resolve the line…

地球与行星天体物理 · 物理学 2017-10-11 Rohini S. Giles , Leigh N. Fletcher , Patrick G. J. Irwin

The spatial distribution of the tropospheric methane on Titan was measured using near-infrared spectroscopy. Ground-based observations at 1.5$\mu{\rm m}$ (H-band) were performed during the same night using instruments with adaptive optics…

Towering storms, swirling clouds, and vortices are the cloud tops manifestation of complex weather systems shaping the atmosphere of Jupiter. We use observations from Juno's MicroWave Radiometer (MWR), the Very Large Array (VLA) and the…

地球与行星天体物理 · 物理学 2025-04-15 Chris Moeckel , Imke de Pater , Bob Sault , Bryan Butler

Jupiter was imaged during the Science Demonstration of the MCAO Demonstrator (MAD) at the European Southern Observatory's UT3 Very Large Telescope unit. Io and Europa were used as natural guide stars on either side of Jupiter, separated…

Water and ammonia vapors are known to be the major sources of spectral absorption at pressure levels observed by the microwave radiometer (MWR) on Juno. However, the brightness temperatures and limb darkening observed by the MWR at its…

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

We present a technique for creating a longitude-resolved image of Jupiter's thermal radio emission. The technique has been applied to VLA data taken on 25 January 1996 at a wavelength of 2 cm. A comparison with infrared data shows a good…

天体物理学 · 物理学 2009-11-11 R. J. Sault , C. Engel , Imke de Pater

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
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