Detection of ice and organics on an asteroidal surface

@article{Rivkin2010DetectionOI,
  title={Detection of ice and organics on an asteroidal surface},
  author={Andrew S. Rivkin and Joshua P. Emery},
  journal={Nature},
  year={2010},
  volume={464},
  pages={1322-1323}
}
Recent observations, including the discovery in typical asteroidal orbits of objects with cometary characteristics (main-belt comets, or MBCs), have blurred the line between comets and asteroids, although so far neither ice nor organic material has been detected on the surface of an asteroid or directly proven to be an asteroidal constituent. Here we report the spectroscopic detection of water ice and organic material on the asteroid 24 Themis, a detection that has been independently confirmed… 
Water ice and organics on the surface of the asteroid 24 Themis
TLDR
Infrared spectra of the asteroid 24 Themis show that ice and organic compounds are not only present on its surface but also prevalent, and their identification agrees with independent results that rule out other compounds as possible sources of the observed spectral structure.
Astronomical Observations of Volatiles on Asteroids
We have long known that water and hydroxyl are important components in meteorites and asteroids. However, in the time since the publication of Asteroids III, evolution of astronomical
Asteroid 65 Cybele: Detection Of Small Silicate Grains, Water-Ice And Organics
Context. (65) Cybele is the most representative member of a population of primitive asteroids in the outer edge of the main belt, the Cybele asteroids. Recent dynamical models suggest that a
Main-Belt Comets as Tracers of Ice in the Inner Solar System
  • H. Hsieh
  • Physics, Geology
    Proceedings of the International Astronomical Union
  • 2012
Abstract As a recently recognized class of objects exhibiting apparently cometary (sublimation-driven) activity yet orbiting completely within the main asteroid belt, main-belt comets (MBCs) have
The lightcurve of an asteroid
Asteroids appear frequently in the inner Solar System and have been studied intensively by astronomers through the years. Properties of asteroids such as orbital characteristics, composition, age,
Water Reservoirs in Small Planetary Bodies: Meteorites, Asteroids, and Comets
TLDR
The nature and probable origins of asteroids and comets are discussed based on data from remote observations, in situ measurements by spacecraft, and laboratory analyses of meteorites derived from asteroids.
Origin and Evolution of Volatile-rich Asteroids
Volatile-rich asteroids represent the largest population, about 42% (DeMeo and Carry, 2014), of objects found between 2 and 3.5 AU. They encompass asteroids from the C complex that are believed to
Localized sources of water vapour on the dwarf planet (1) Ceres
TLDR
The detection of water vapour around Ceres is reported, with at least 1026 molecules being produced per second, originating from localized sources that seem to be linked to mid-latitude regions on the surface.
Progress Report on Study of Cybele Group Asteroids
In 2010 we reported water ice and organics on asteroid 24 Themis, and shortly after on asteroid 65 Cybele [1], [3]. These findings have spurred us to investigate more primitive asteroids in the outer
...
...

References

SHOWING 1-10 OF 19 REFERENCES
Water ice and organics on the surface of the asteroid 24 Themis
TLDR
Infrared spectra of the asteroid 24 Themis show that ice and organic compounds are not only present on its surface but also prevalent, and their identification agrees with independent results that rule out other compounds as possible sources of the observed spectral structure.
A Population of Comets in the Main Asteroid Belt
TLDR
Optical data is presented showing the existence of a population of comets originating in a third reservoir: the main asteroid belt, which lends new support to the idea that main-belt objects could be a major source of terrestrial water.
The Lifetime of Ice on Main Belt Asteroids
We theoretically estimate the loss rate of buried ice from spherical bodies 2-3.3 AU from the Sun. The loss rate is explored as a function of about a dozen parameters. We introduce the concept of a
Modeling of Liquid Water on CM Meteorite Parent Bodies and Implications for Amino Acid Racemization
Abstract We have constructed an asteroid model with the intent of tracking the radial and temporal dependence of temperature and composition throughout a 100-km-diameter CM-type parent body, with
A Model of Spectral Albedo of Particulate Surfaces: Implications for Optical Properties of the Moon
A simple one-dimensional geometrical-optics model for spectral albedo of powdered surfaces, in particular of lunar regolith, is presented. As distinct from, e.g., the Kubelka–Munk formula, which
Production and Optical Constants of Ice Tholin from Charged Particle Irradiation of (1:6) C2H6/H2O at 77 K
Ices containing H2O and small amounts of simple hydrocarbons, either in the form of clathrates or as intimate physical mixtures, are thought to be common outer Solar System condensates that were
OPTICAL CONSTANTS OF AMORPHOUS AND CRYSTALLINE H2O-ICE: 2.5-22 μm (4000-455 cm −1 ) OPTICAL CONSTANTS OF H2O-ICE
Using new laboratory spectra, we have calculated the real and imaginary parts of the index of refraction of amorphous and crystalline H2O-ice from 20–150 K in the wavelength range 2.5–22 μm (4000–455
SpeX: A Medium‐Resolution 0.8–5.5 Micron Spectrograph and Imager for the NASA Infrared Telescope Facility
We present the design, construction, and performance of SpeX, a medium‐resolution 0.8–5.5 μm cryogenic spectrograph and imager, now in operation at the 3.0 m NASA Infrared Telescope Facility (IRTF)
...
...