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Related papers: Herschel-PACS photometry of Uranus' five major moo…

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We present all Herschel PACS photometer observations of Mars, Saturn, Uranus, Neptune, Callisto, Ganymede, and Titan. All measurements were carefully inspected for quality problems, were reduced in a (semi-)standard way, and were…

Earth and Planetary Astrophysics · Physics 2016-03-30 T. G. Müller , Z. Balog , M. Nielbock , R. Moreno , U. Klaas , A. Moór , H. Linz , H. Feuchtgruber

We determine accurate positions of the main satellites of Uranus: Miranda, Ariel, Umbriel, Titania, and Oberon. Positions of Uranus, as derived from those of these satellites, are also determined. The observational period spans from 1992 to…

We present a radiative transfer analysis of latitudinally resolved H (1.487-1.783 micron) and K (2.028-2.364 micron) band spectra of Uranus, from which we infer the distributions of aerosols and methane in the planet's atmosphere. Data were…

Earth and Planetary Astrophysics · Physics 2018-06-06 Michael T. Roman , Don Banfield , Peter J. Gierasch

The 27 satellites of Uranus are enigmatic, with dark surfaces coated by material that could be rich in organics. Voyager 2 imaged the southern hemispheres of Uranus' five largest 'classical' moons Miranda, Ariel, Umbriel, Titania, and…

On 2007 December 16-17, spectra were acquired of the disk of Uranus by the Spitzer Infrared Spectrometer (IRS) when its equator was close to the sub-earth point. This spectrum provides the highest-resolution broad-band spectrum ever…

Non-resolved thermal infrared observations enable studies of thermal and physical properties of asteroid surfaces provided the shape and rotational properties of the target are well determined via thermo-physical models. We used…

We present the astrometry of the five largest satellites of Uranus from observations spread over almost three decades with photographic plates and CCDs (mainly), taken at the Pico dos Dias Observatory - Brazil. All positions presented here…

Earth and Planetary Astrophysics · Physics 2021-12-07 Julio I. B. Camargo , Carlos H. Veiga , Roberto Vieira-Martins , Agnes Fienga , Marcelo Assafin

The surfaces of the large Uranian satellites are characterized by a mixture of H2O ice and a dark, potentially carbon-rich, constituent, along with CO2 ice. At the mean heliocentric distance of the Uranian system, native CO2 ice should be…

Earth and Planetary Astrophysics · Physics 2015-06-17 Richard J. Cartwright , Joshua P. Emery , Andy S. Rivkin , David E. Trilling , Noemi Pinilla-Alonso

We present flux measurements of Uranus observed at phase angles of 43.9{\deg}, 44.0{\deg}, and 52.4{\deg} by the Multispectral Visible Imaging Camera (MVIC) on the New Horizons spacecraft during 2023, 2010, and 2019, respectively. New…

Herschel-PACS measurements of the rotational R(0) and R(1) HD lines in the atmospheres of Uranus and Neptune are analyzed in order to derive a D/H ratio with improved precision for both planets. The derivation of the D/H ratio includes also…

Earth and Planetary Astrophysics · Physics 2015-06-12 H. Feuchtgruber , E. Lellouch , G. Orton , T. de Graauw , B. Vandenbussche , B. Swinyard , R. Moreno , C. Jarchow , F. Billebaud , T. Cavalie , S. Sidher , P. Hartogh

The "TNOs are Cool!: A survey of the trans-Neptunian region" is a Herschel Open Time Key Program that aims to characterize planetary bodies at the outskirts of the Solar System using PACS and SPIRE data, mostly taken as scan-maps. In this…

Instrumentation and Methods for Astrophysics · Physics 2015-06-17 Cs. Kiss , Th. G. Müller , E. Vilenius , A. Pál , P. Santos-Sanz , E. Lellouch , G. Marton , E. Verebélyi , N. Szalai , P. Hartogh , J. Stansberry , F. Henry , A. Delsanti

Ground-based near-IR observations have revealed that Uranus anomalously hot upper atmosphere, detected by Voyager 2, has been steadily cooling. The observed $H_3^+$ and $H_2$ emission-line spectra probe Uranus' ionosphere and thermosphere,…

Earth and Planetary Astrophysics · Physics 2025-01-22 Laurence Trafton , Kyle Kaplan

The narrow main rings of Uranus are composed of almost exclusively centimeter- to meter-sized particles, with a very small or nonexistent dust component; however, the filling factor, composition, thickness, mass, and detailed particle size…

Earth and Planetary Astrophysics · Physics 2019-07-17 Edward M. Molter , Imke de Pater , Michael T. Roman , Leigh N. Fletcher

Context: Trans-Neptunian objects are distant bodies that retain valuable information about the origin and evolution of the Solar System. Many of these objects constitute binary systems. Studying binaries allows us to further characterise…

Earth and Planetary Astrophysics · Physics 2026-05-22 J. M. Gómez-Limón , R. Leiva , J. L. Ortiz , P. Santos-Sanz , M. Kretlow , Y. Kilic , J. L. Rizos , A. Álvarez-Candal , T. G. Müller

NASA's Spitzer Infrared Spectrometer (IRS) acquired mid-infrared (5-37 microns) disc-averaged spectra of Uranus very near to its equinox in December 2007. A mean spectrum was constructed from observations of multiple central meridian…

We present results from mid-infrared imaging of Uranus at wavelengths of 13.0 micron and 18.7 micron, sensing emission from the stratosphere and upper troposphere, acquired using the VISIR instrument at the Very Large Telescope (VLT),…

Earth and Planetary Astrophysics · Physics 2020-01-15 Michael T. Roman , Leigh N. Fletcher , Glenn S. Orton , Naomi Rowe-Gurney , Patrick G. J. Irwin

We present photometric properties of six small (radii < 100 km) satellites of Uranus based on 32 H-(1.49-1.78 um) band images taken on August 29, 2015 from the Keck II Telescope on Maunakea, Hawaii with the near-infrared camera NIRC2…

Earth and Planetary Astrophysics · Physics 2019-10-17 Samuel Paradis , Chris Moeckel , Joshua Tollefson , Imke de Pater

Thermal-infrared measurements of asteroids are crucial for deriving the objects' sizes, albedos, and also the thermophysical properties of the surface material. Depending on the available data, a range of simple to complex thermal models…

Earth and Planetary Astrophysics · Physics 2021-06-02 T. Müller , M. Burgdorf , V. Ali-Lagoa , S. A. Buehler , M. Prange

Physical characterization of Trans-Neptunian objects, a primitive population of the outer solar system, may provide constraints on their formation and evolution. The goal of this work is to characterize a set of 15 scattered disk (SDOs) and…

Our aims are to determine flux densities and their photometric accuracy for a set of seventeen stars that range in flux from intermediately bright (<2.5 Jy) to faint (>5 mJy) in the far-infrared (FIR). We also aim to derive signal-to-noise…

Solar and Stellar Astrophysics · Physics 2018-05-30 Ulrich Klaas , Zoltan Balog , Markus Nielbock , Thomas Muller , Hendrik Linz , Csaba Kiss
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