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Related papers: Ethane in Titan's Stratosphere from Cassini CIRS F…

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We modelled the H-band spectrum obtained with the Infrared Imaging Spectrograph (IRIS2) at the Anglo-Australian Telescope in order to infer the cloud structure and composition of the atmosphere of the planet between 0.1 and 11 bar. Such…

Earth and Planetary Astrophysics · Physics 2013-03-15 Kimberly Bott , Lucyna Kedziora-Chudczer , Jeremy Bailey

Analysis of the Cassini Ultraviolet Imaging Spectrometer (UVIS) stellar and solar occultations at Titan to date include 12 species: N$_{2}$ (nitrogen), CH$_{4}$ (methane), C$_{2}$H$_{2}$ (acetylene), C$_{2}$H$_{4}$ (ethylene),…

Astrophysics · Physics 2009-11-13 Mao-Chang Liang , Yuk L. Yung , Donald E. Shemansky

This work aims at characterizing the mid-IR spectra of formamide in its pure form as well as in mixtures of the most abundant interstellar ices via laboratory simulation of such ices, as well as demonstrating how these laboratory spectra…

We present a set of 6-12 micron ISOPHOT-S spectra of the general interstellar medium of the Milky Way. This part of the spectrum is dominated by a series of strong, wide emission features commonly called the Unidentified Infrared Bands. The…

Astrophysics · Physics 2009-11-07 J. Kahanpaa , K. Mattila , K. Lehtinen , C. Leinert , D. Lemke

The possible presence of graphene in the interstellar medium (ISM) is examined by comparing the interstellar extinction curve with the ultraviolet absorption of graphene calculated from its dielectric functions experimentally obtained with…

Astrophysics of Galaxies · Physics 2019-10-09 Qi Li , Aigen Li , B. W. Jiang

After 9 years in the Saturn system, the Cassini spacecraft finally observed Titan in the supersonic solar wind. These unique observations reveal that Titan interaction with the solar wind is in many ways similar to un-magnetized planets…

Earth and Planetary Astrophysics · Physics 2015-06-23 C. Bertucci , D. C. Hamilton , W. S. Kurth , G. Hospodarsky , D. Mitchell , N. Sergis , N. J. T. Edberg , M. K. Dougherty

Using synchrotron powder diffraction the structure of a co-crystal between benzene and ethane has been determined. The structure is remarkable, a lattice of benzene molecules playing host to ethane molecules. This is demonstrated by the…

Materials Science · Physics 2025-04-30 Helen E. Maynard-Casely , Robert Hodyss , Morgan L. Cable , Tuan Hoang Vu

High-resolution spectra of Pluto in the 1.66 um region, recorded with the VLT/CRIRES instrument in 2008 (2 spectra) and 2012 (5 spectra), are analyzed to constrain the spatial and vertical distribution of methane in Pluto's atmosphere and…

Earth and Planetary Astrophysics · Physics 2015-06-19 E. Lellouch , C. de Bergh , B. Sicardy , F. Forget , M. Vangvichith , H. -U. Käufl

The Cosmic Hot Interstellar Plasma Spectrometer (CHIPS) was designed to study diffuse emission from hot gas in the local interstellar cavity in the wavelength range 90 - 265 A. Between launch in January 2003 and early 2004, the instrument…

Astrophysics · Physics 2009-11-10 M. Hurwitz , T. P. Sasseen , M. M. Sirk

The Infrared Spectrograph (IRS) on board the Spitzer Space Telescope observed about 15,000 objects during the cryogenic mission lifetime. Observations provided low-resolution (R~60-127) spectra over ~5-38um and high-resolution (R~600)…

Instrumentation and Methods for Astrophysics · Physics 2015-06-26 V. Lebouteiller , D. J. Barry , C. Goes , G. C. Sloan , H. W. W. Spoon , D. W. Weedman , J. Bernard-Salas , J. R. Houck

The spectral position of the 3.6 micron continuum peak measured on Cassini-VIMS I/F spectra is used as a marker to infer the temperature of the regolith particles covering the surfaces of Saturn's icy satellites. This feature is…

Saturn's moon Enceladus has vents emerging from a sub-surface ocean, offering unique probes into the liquid environment. These vents drain into the larger neutral torus in orbit around Saturn. We present a methanol (CH3OH) detection…

Earth and Planetary Astrophysics · Physics 2017-09-28 E. Drabek-Maunder , J. Greaves , H. J. Fraser , D. L. Clements , L. -N. Alconcel

Images from instruments on Cassini as well as from telescopes on the ground reveal the presence of sporadic small-scale cloud activity in the cold late-winter north polar of Saturn's large moon Titan. These clouds lie underneath the…

Astrophysics · Physics 2009-11-13 M. E. Brown , E. L. Schaller , H. G. Roe , C. CHen , J. Roberts , R. H. Brown , K. H. Baines , R. N. Clark

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…

X-Shooter is the first second-generation instrument for the ESO-VLT. It as a spectrograph covering the 300 - 2480 nm spectral range at once with a high resolving power. These properties enticed us to observe (136199) Eris during the science…

Earth and Planetary Astrophysics · Physics 2015-05-28 A. Alvarez-Candal , N. Pinilla-Alonso , J. Licandro , J. Cook , E. Mason , T. Roush , D. Cruikshank , F. Gourgeot , E. Dotto , D. Perna

As the only icy satellite with a thick atmosphere and liquids on its surface, Titan represents a unique end-member to study the impact cratering process. Unlike craters on other Saturnian satellites, Titan's craters are preferentially…

Earth and Planetary Astrophysics · Physics 2023-06-12 Shigeru Wakita , Brandon C. Johnson , Jason M. Soderblom , Jahnavi Shah , Catherine D. Neish

We report the spectral index of diffuse radio emission between 50 and 100 MHz from data collected with two implementations of the Experiment to Detect the Global EoR Signature (EDGES) low-band system. EDGES employs a wide beam…

Instrumentation and Methods for Astrophysics · Physics 2019-01-08 Thomas J. Mozdzen , Nivedita Mahesh , Raul A. Monsalve , Alan E. E. Rogers , Judd D. Bowman

Our knowledge of Saturns neutral thermosphere is far superior to that of the other giant planets due to Cassini Ultraviolet Imaging Spectrograph (UVIS) observations of 15 solar occultations and 26 stellar occultations analyzed to date.…

Earth and Planetary Astrophysics · Physics 2016-10-26 Darrell F. Strobel , Tommi Koskinen , Ingo Mueller-Wodarg

Over the last eight years, the Visual and Infrared Mapping Spectrometer (VIMS) aboard the Cassini orbiter has returned hyperspectral images in the 0.35-5.1 micron range of the icy satellites and rings of Saturn. These very different objects…

We present sub-millimeter spectra of HCN isotopologues on Titan, derived from publicly available ALMA flux calibration observations of Titan taken in early 2014. We report the detection of a new HCN isotopologue on Titan, H$^{13}$C$^{15}$,…