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相关论文: Probing Saturn's tropospheric cloud with Cassini/V…

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The Cassini mission performed 127 targeted flybys of Titan during its 13-year mission to Saturn, culminating in the Grand Finale between April-September 2017. Here we demonstrate the use of the Atacama Large Millimeter/submillimeter Array…

地球与行星天体物理 · 物理学 2019-07-31 M. A. Cordiner , N. A. Teanby , C. A. Nixon , V. Vuitton , A. E. Thelen , S. B. Charnley

This book chapter, Saturn's Polar Atmosphere, is to be published by Cambridge University Press as part of a multi-volume work edited by Kevin Baines, Michael Flasar, Norbert Krupp, and Thomas Stallard, entitled "Saturn in the 21st Century."…

地球与行星天体物理 · 物理学 2016-10-04 Kunio M. Sayanagi , Kevin H. Baines , Ulyana A. Dyudina , Leigh N. Fletcher , Agustin Sánchez-Lavega , Robert A. West

The complex organic chemistry harbored by the atmosphere of Titan has been investigated in depth by Cassini observations. Among them, a series of solar occultations performed by the VIMS instrument throughout the 13 years of Cassini…

地球与行星天体物理 · 物理学 2020-01-10 Thibaud Cours , Daniel Cordier , Benoît Seignovert , Luca Maltagliati , Ludovic Biennier

The abundance of deuterium in giant planet atmospheres provides constraints on the reservoirs of ices incorporated into these worlds during their formation and evolution. Motivated by discrepancies in the measured deuterium-hydrogen ratio…

We present results of an investigation into the formation of nitrogen-bearing molecules in the atmosphere of Titan. We extend a previous model (Li et al. 2015, 2016) to cover the region below the tropopause, so the new model treats the…

地球与行星天体物理 · 物理学 2016-10-05 Karen Willacy , Mark Allen , Yuk Yung

The details of the Solar system's formation are still heavily debated. Questions remain about the formation locations of the giant planets, and the degree to which volatile material was mixed throughout the proto-planetary system. One…

地球与行星天体物理 · 物理学 2013-02-20 Lucyna Kedziora-Chudczer , Jeremy Bailey , Jonathan Horner

Saturn's quasi-periodic planet-encircling storms are the largest convecting outbursts in the Solar System. The last eruption was in 1990. A new eruption started in December 2010 and presented the first-ever opportunity to observe such…

Between 2004 and 2017, spectral observations have been gathered by the Visual and Infrared Mapping Spectrometer (VIMS) on-board Cassini (Brown et al., 2004) during 23 Enceladus close encounters, in addition to more distant surveys. The…

We present a review of Saturn's interior structure and thermal evolution, with a particular focus on work in the past 5 years. Data from the Cassini mission, including a precise determination of the gravity field from the Grand Finale…

Water-ice-poor, 5-$\mu$m-bright material on Saturn's moon Titan has previously been geomorphologically identified as evaporitic. Here we present a global distribution of the occurrences of the 5-$\mu$m-bright spectral unit, identified with…

Recently, a discussion about the effects of the anisotropy in the spatial density of Dark Matter in the Solar neighbourhood due to the motion of the Sun through the Galactic halo on the orbital motion of the solar system's planets and their…

广义相对论与量子宇宙学 · 物理学 2019-09-11 Lorenzo Iorio

Investigating the overall brightness of planets (and moons) provides insight into their envelopes and energy budgets [1, 2, 3, 4]. Titan phase curves (a representation of overall brightness vs. Sun-object-observer phase angle) have been…

地球与行星天体物理 · 物理学 2017-04-26 Antonio García Muñoz , Panayotis Lavvas , Robert A. West

We report on results of an observing campaign to support the Juno mission. At the beginning of 2016, using TEXES (Texas Echelon cross-dispersed Echelle Spectrograph), mounted on the NASA Infrared Telescope Facility (IRTF), we obtained data…

Saturn's B ring is the most opaque ring in our solar system, but many of its fundamental parameters, including its total mass, are not well constrained. Spiral density waves generated by mean-motion resonances with Saturn's moons provide…

地球与行星天体物理 · 物理学 2016-08-31 M. M. Hedman , P. D. Nicholson

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

Searches for phosphine in Venus' atmosphere have sparked a debate. Cordiner et al. 2022 analyse spectra from the Stratospheric Observatory For Infrared Astronomy (SOFIA) and infer <0.8 ppb of PH3. We noticed that some spectral artefacts…

地球与行星天体物理 · 物理学 2023-12-13 Jane S. Greaves , Janusz J. Petkowski , Anita M. S. Richards , Clara Sousa-Silva , Sara Seager , David L. Clements

We present ALMA and VLA spatial maps of the Uranian atmosphere taken between 2015 and 2018 at wavelengths from 1.3 mm to 10 cm, probing pressures from $\sim$1 to $\sim$50 bar at spatial resolutions from 0.1'' to 0.8''. Radiative transfer…

地球与行星天体物理 · 物理学 2020-10-22 Edward M. Molter , Imke de Pater , Statia Luszcz-Cook , Joshua Tollefson , Robert J. Sault , Bryan Butler , David de Boer

The accurate determination of Saturn's gravitational coefficients by Cassini could provide tighter constrains on Saturn's internal structure. Also, occultation measurements provide important information on the planetary shape which is often…

地球与行星天体物理 · 物理学 2015-06-15 Ravit Helled , Tristan Guillot

Remote sensing observations meet some limitations when used to study the bulk atmospheric composition of the giant planets of our solar system. A remarkable example of the superiority of in situ probe measurements is illustrated by the…