Journal ArticleDOI
On the origin of Titan's atmosphere
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TLDR
Titan's atmospheric methane appears to have been formed from carbon and other carbon compounds, either by gas phase reactions in the subnebula or by accretional heating during the formation of Titan.About:
This article is published in Planetary and Space Science.The article was published on 2000-06-01. It has received 53 citations till now. The article focuses on the topics: Atmosphere of Titan & Life on Titan.read more
Citations
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Journal ArticleDOI
Liquid water on Enceladus from observations of ammonia and 40Ar in the plume
J. H. Waite,W. S. Lewis,Brian Magee,Jonathan I. Lunine,William B. McKinnon,Christopher R. Glein,Olivier Mousis,Olivier Mousis,D. T. Young,Tim Brockwell,Joseph Westlake,M. J. Nguyen,B. D. Teolis,Hasso B. Niemann,Ralph L. McNutt,Mark E. Perry,Wing-Huen Ip +16 more
TL;DR: McKinnon et al. as mentioned in this paper reported that ammonia is present in the plume, along with various organic compounds, deuterium and, very probably, Ar-40, which provides strong evidence for the existence of at least some liquid water, given that temperatures in excess of 180 K have been measured near the fractures from which the jets emanate.
Journal ArticleDOI
Ion Neutral Mass Spectrometer Results from the First Flyby of Titan
J. Hunter Waite,Hasso B. Niemann,Roger V. Yelle,Wayne Kasprzak,Thomas E. Cravens,Janet G. Luhmann,Ralph L. McNutt,Wing-Huen Ip,David A. Gell,Virginie De La Haye,Ingo Müller-Wordag,Brian Magee,N. Borggren,S. Ledvina,Greg Fletcher,Erin Walter,Ryan M. Miller,Stefan Scherer,Rob Thorpe,Jing Xu,Bruce P. Block,Ken Arnett +21 more
TL;DR: The Cassini Ion Neutral Mass Spectrometer (INMS) has obtained the first in situ composition measurements of the neutral densities of molecular nitrogen, methane, molecular hydrogen, argon, and a host of stable carbon-nitrile compounds in Titan's upper atmosphere.
Journal ArticleDOI
Episodic outgassing as the origin of atmospheric methane on Titan
TL;DR: This work shows that episodic outgassing of methane stored as clathrate hydrates within an icy shell above an ammonia-enriched water ocean is the most likely explanation for Titan's atmospheric methane, and predicts that future fly-bys should reveal the existence of both a subsurface water ocean and a rocky core, and should detect more cryovolcanic edifices.
Episodic outgassing as the origin of atmospheric methane on Titan
TL;DR: The authors showed that episodic outgassing of methane stored as clathrate hydrates within an icy shell above an ammonia-enriched water ocean is the most likely explanation for Titan's atmospheric methane.
Journal ArticleDOI
New Millimeter Heterodyne Observations of Titan: Vertical Distributions of Nitriles HCN, HC3N, CH3CN, and the Isotopic Ratio 15N/14N in Its Atmosphere
TL;DR: In this article, high-resolution spectra of HC3N and CH3CN were collected at 39-kHz resolution using a frequency-switched technique and several CH3N features were recorded at 78kHz resolution in two transitions around 147.6 and 220.7 GHz.
References
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Book
CRC Handbook of Chemistry and Physics
TL;DR: CRC handbook of chemistry and physics, CRC Handbook of Chemistry and Physics, CRC handbook as discussed by the authors, CRC Handbook for Chemistry and Physiology, CRC Handbook for Physics,
Journal ArticleDOI
Abundances of the elements: Meteoritic and solar
Edward Anders,Nicolas Grevesse +1 more
TL;DR: In this article, new abundance tables have been compiled for C1 chondrites and the solar photosphere and corona, based on a critical review of the literature to mid-1988.
Journal ArticleDOI
Ammonia Synthesis at Atmospheric Pressure
TL;DR: Ammonia was synthesized from its elements at atmospheric pressure in a solid state proton (H+)-conducting cell-reactor and the thermodynamic requirement for a high-pressure process is eliminated.
Journal ArticleDOI
Composition and structure of Mars' Upper atmosphere: Results from the neutral mass spectrometers on Viking 1 and 2
TL;DR: In this paper, the upper atmospheric mass spectrometers of the Viking 1 and 2 were used to study the composition and structure of Mars' upper atmosphere at all heights below 180 km and the isotopic composition of carbon and oxygen in the Martian atmosphere is similar to that in the terrestrial atmosphere.
Journal ArticleDOI
Impact erosion of the primordial atmosphere of mars
H. J. Melosh,A. M. Vickery +1 more
TL;DR: The process of atmospheric erosion by impacts is examined and it is shown that it may account for an early episode of atmosphere loss from Mars.
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