Ultraviolet photolysis of amino acids in a 100 K water ice matrix: Application to the outer Solar System bodies

Icarus ◽  
2007 ◽  
Vol 187 (2) ◽  
pp. 584-591 ◽  
Author(s):  
Grazyna E. Orzechowska ◽  
Jay D. Goguen ◽  
Paul V. Johnson ◽  
Alexandre Tsapin ◽  
Isik Kanik
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Outer Solar System ◽  
Water Ice ◽  
Matrix Application ◽  
Solar System Bodies ◽  
Ultraviolet Photolysis

scholarly journals Search for water and life's building blocks in the Universe

2015 ◽  
Vol 11 (A29B) ◽  
pp. 375-375
Author(s):  
Sun Kwok ◽  
Edwin Bergin ◽  
Pascale Ehrenfreund
Keyword(s):  
Solar System ◽  
Common Ground ◽  
Kuiper Belt ◽  
Building Blocks ◽  
Planetary Science ◽  
Dust Particles ◽  
Outer Solar System ◽  
Water Ice ◽  
Solar System Bodies ◽  
Solid Bodies

Water is the common ground between astronomy and planetary science as the presence of water on a planet is universally accepted as essential for its potential habitability. Water assists many biological chemical reactions leading to complexity by acting as an effective solvent. It shapes the geology and climate on rocky planets, and is a major or primary constituent of the solid bodies of the outer solar system. Water ice seems universal in space and is by far the most abundant condensed-phase species in our universe. Water-rich icy layers cover dust particles within the cold regions of the interstellar medium and molecular ices are widespread in the solar system. The poles of terrestrial planets (e.g. Earth, Mars) and most of the outer-solar-system satellites are covered with ice. Smaller solar system bodies, such as comets and Kuiper Belt Objects (KBOs), contain a significant fraction of water ice and trace amounts of organics. Beneath the ice crust of several moons of Jupiter and Saturn liquid water oceans probably exist.

Ultraviolet photolysis of amino acids on the surface of icy Solar System bodies

Icarus ◽  
2012 ◽  
Vol 221 (2) ◽  
pp. 800-805 ◽  
Author(s):  
Paul V. Johnson ◽  
Robert Hodyss ◽  
Victoria F. Chernow ◽  
Dawn M. Lipscomb ◽  
Jay D. Goguen
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Solar System Bodies ◽  
Ultraviolet Photolysis

scholarly journals Organic matter and water from asteroid Itokawa

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Q. H. S. Chan ◽  
A. Stephant ◽  
I. A. Franchi ◽  
X. Zhao ◽  
R. Brunetto ◽  
...  
Keyword(s):  
Organic Matter ◽  
Solar System ◽  
Parent Body ◽  
Asteroid Belt ◽  
True Nature ◽  
Water Ice ◽  
Nanocrystalline Graphite ◽  
Terrestrial Water ◽  
Solar System Bodies ◽  
Small Dust

AbstractUnderstanding the true nature of extra-terrestrial water and organic matter that were present at the birth of our solar system, and their subsequent evolution, necessitates the study of pristine astromaterials. In this study, we have studied both the water and organic contents from a dust particle recovered from the surface of near-Earth asteroid 25143 Itokawa by the Hayabusa mission, which was the first mission that brought pristine asteroidal materials to Earth’s astromaterial collection. The organic matter is presented as both nanocrystalline graphite and disordered polyaromatic carbon with high D/H and 15N/14N ratios (δD =  + 4868 ± 2288‰; δ15N =  + 344 ± 20‰) signifying an explicit extra-terrestrial origin. The contrasting organic feature (graphitic and disordered) substantiates the rubble-pile asteroid model of Itokawa, and offers support for material mixing in the asteroid belt that occurred in scales from small dust infall to catastrophic impacts of large asteroidal parent bodies. Our analysis of Itokawa water indicates that the asteroid has incorporated D-poor water ice at the abundance on par with inner solar system bodies. The asteroid was metamorphosed and dehydrated on the formerly large asteroid, and was subsequently evolved via late-stage hydration, modified by D-enriched exogenous organics and water derived from a carbonaceous parent body.

Solar system astrometry, Gaia, and the large surveys – a huge step ahead to stellar occultations by distant small solar system bodies

2017 ◽  
Vol 12 (S330) ◽  
pp. 397-398
Author(s):  
J. I. B. Camargo ◽  
M. V. Banda-Huarca ◽  
R. L. Ogando ◽  
J. Desmars ◽  
F. Braga-Ribas ◽  
...  
Keyword(s):  
Solar System ◽  
Outer Solar System ◽  
Stellar Occultation ◽  
Stellar Occultations ◽  
Solar System Bodies

AbstractThe stellar occultation technique is a powerful tool to study distant small solar system bodies. Currently, around 2 500 trans-neptunian objects (TNOs) and Centaurs are known. With the astrometry from Gaia and large surveys like the Large Synoptic Survey Telescope (LSST), accurate predictions of occultation events will be available to tens of thousands of TNOs and Centaurs and boost the knowledge of the outer solar system.

Radiation Effects in Water Ice in the Outer Solar System

2012 ◽  
pp. 527-549 ◽  
Author(s):  
R. A. Baragiola ◽  
M. A. Famá ◽  
M. J. Loeffler ◽  
M. E. Palumbo ◽  
U. Raut ◽  
...  
Keyword(s):  
Solar System ◽  
Radiation Effects ◽  
Outer Solar System ◽  
Water Ice

Construction of a photometer to detect stellar occultations by outer solar system bodies for the Whipple mission concept

2014 ◽  
Author(s):  
Ralph P. Kraft ◽  
Almus T. Kenter ◽  
Charles Alcock ◽  
Stephen S. Murray ◽  
Markus Loose ◽  
...  
Keyword(s):  
Solar System ◽  
Outer Solar System ◽  
Stellar Occultations ◽  
Solar System Bodies

scholarly journals Production of Oxidants by Ion Bombardment of Icy Moons in the Outer Solar System

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Philippe Boduch ◽  
Enio Frota da Silveira ◽  
Alicja Domaracka ◽  
Oscar Gomis ◽  
Xue Yang Lv ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Peroxide ◽  
Solar System ◽  
Ion Irradiation ◽  
Pure Water ◽  
Outer Solar System ◽  
Water Ice ◽  
Icy Moons ◽  
Different Temperatures ◽  
Frozen Gases

Our groups in Brazil, France and Italy have been active, among others in the world, in performing experiments on physical-chemical effects induced by fast ions colliding with solids (frozen gases, carbonaceous and organic materials, silicates, etc.) of astrophysical interest. The used ions span a very large range of energies, from a few keV to hundreds MeV. Here we present a summary of the results obtained so far on the formation of oxidants (hydrogen peroxide and ozone) after ion irradiation of frozen water, carbon dioxide and their mixtures. Irradiation of pure water ice produces hydrogen peroxide whatever is the used ion and at different temperatures. Irradiation of carbon dioxide and water frozen mixtures result in the production of molecules among which hydrogen peroxide and ozone. The experimental results are discussed in the light of the relevance they have to support the presence of an energy source for biosphere on Europa and other icy moons in the outer Solar System.

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