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12 - Chemistry of comets and other ice-bearing planetesimals

Published online by Cambridge University Press:  05 June 2012

Harry Y. McSween, Jr  and
Gary R. Huss
Harry Y. McSween, Jr
Affiliation:
University of Tennessee, Knoxville
Gary R. Huss
Affiliation:
University of Hawaii, Manoa
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Summary

Overview

Ices, composed of water and other volatile compounds, are a very important component of the solar system. Whether formed by condensation in the nebula or imported from the interstellar medium, these frozen substances accreted with dust and rock beyond the snowline to form vast swarms of planetesimals and some larger bodies. Most of the ice-bearing planetesimals have been swept out of the planetary region by gravitational interactions with the giant planets, and their distribution now extends out to the limits of the Sun's grasp. Occasionally these bodies careen into the inner solar system, where sunlight volatilizes their ices, revealing them to be comets. Other planetesimals that formerly contained ices have remained near their formation locations in the asteroid belt; most of these suffered aqueous alteration when ices were melted. In this chapter we consider what has been discovered about the chemistry of comets and hydrated asteroids. The importance of these objects to cosmochemistry is a consequence of their primitive compositions and remarkable state of preservation.

Icy bodies in the solar system

In Chapter 10, we briefly considered ices and how they trap noble gases and provide sites for the formation of organic matter in the ISM and the solar nebula. We now discuss the ices themselves, including how they originated, where they existed in the early solar system and where they exist today.

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Cosmochemistry , pp. 412 - 444
Publisher: Cambridge University Press
Print publication year: 2010

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References

Bradley, J. P. (2004) Interplanetary dust particles. In Treatise on Geochemistry, Vol. 1. Meteorites, Comets, and Planets, ed. Davis, A. M.Oxford: Elsevier, pp. 689–711. This review provides an excellent summary of the voluminous literature that describes and interprets IDPs.Google Scholar
Brearley, A. J. (2006) The action of water. In Meteorites and the Early Solar System II, eds. Lauretta, D. S. and McSween, H. Y.. Tucson: University of Arizona Press, pp. 587–624. The best available review of aqueous alteration processes and materials in chondritic meteorites.Google Scholar
Brownlee, D. E. (2004) Comets. In Treatise on Geochemistry, Vol. 1. Meteorites, Comets, and Planets, ed. Davis, A. M.Oxford: Elsevier, pp. 663–688. A comprehensive and thoughtful review of what is known about the composition and structure of comets and the bodies within the belts that supply comets.Google Scholar
Brownlee, D. and 181 coauthors (!) (2006) Comet 81P/Wild2 under a microscope. Science314, 1711–1716. This fascinating article, plus the more focused articles that follow it in the same issue, provide the first characterization of comet dust samples collected and returned by the Stardust spacecraft.
Lunine, J. I. (2006) Origin of water in the solar system. In Meteorites and the Early Solar System II, eds. Lauretta, D. S. and McSween, H. Y.. Tucson: University of Arizona Press, pp. 309–319. An up-to-date review of water in the solar nebula.Google Scholar
A'Hearn, M. F., Millis, R. L., Schleicher, D. G., Osip, D. J. and Birch, P. V. (1995) The ensemble properties of comets: results from narrowband photometry of 85 comets, 1976–1992. Icarus, 118, 223–270.CrossRefGoogle Scholar
Bockelee-Morvan, D. and Crovisier, J. (2002) Lessons of comet Hale-Bopp for coma chemistry. Earth, Moon, and Planets, 89, 53–71.CrossRefGoogle Scholar
Brearley, A. J. (2004) Nebular vs. parent body processing of chondritic meteorites. In Treatise on Geochemistry, Vol. 1. Meteorites, Comets, and Planets, ed. Davis, A. M.Oxford: Elsevier, pp. 247–268.Google Scholar
Browning, L. B., McSween, H. Y. and Zolensky, M. E. (1996) Correlated alteration effects in CM carbonaceous chondrites. Geochimica et Cosmochimica Acta, 60, 2621–2633.CrossRefGoogle Scholar
Buseck, P. R. and Hua, X. (1993) Matrices of carbonaceous chondrite meteorites. Annual Reviews of Earth and Planetary Sciences, 21, 255–305.CrossRefGoogle Scholar
Clayton, R. N. and Mayeda, T. K. (1984) The oxygen isotope record in Murchison and other carbonaceous chondrites. Earth and Planetary Science Letters, 67, 151–166.CrossRefGoogle Scholar
Clayton, R. N. and Mayeda, T. K. (1999) Oxygen isotope studies of carbonaceous chondrites. Geochimica et Cosmochimica Acta, 63, 2089–2104.CrossRefGoogle Scholar
Crovisier, J. plus 13 coauthors (2000) The thermal infrared spectra of comets Hale-Bopp and 103 P/Hartley 2 observed with the Infrared Space Observatory. In Thermal Emission Spectroscopy and Analysis of Dust, Disks, and Regoliths, ASP Conference 196, eds. Sitko, M. L., Sprague, A. L. and Lynch, D. K., San Francisco: Astronomical Society of the Pacific, pp. 109–117.Google Scholar
Flynn, G. J. plus 79 coauthors (2006) Elemental compositions of comet 81P/Wild2 samples collected by Stardust. Science, 314, 1731–1735.CrossRefGoogle ScholarPubMed
Flynn, G. J. and Sutton, S. R. (1992) Trace elements in chondritic stratospheric particles: zinc depletion as a possible indicator of atmospheric entry heating. Proceedings of the Lunar and Planetary Science Conference, 22, 171–184.Google Scholar
Formenkova, M. N., Kerridge, J. F., Marti, K. and McFadden, L. A. (1992). Compositional trends in rock-forming elements of comet Halley dust. Science, 258, 266–269.CrossRefGoogle Scholar
Grimm, R. E. and McSween, H. Y. (1989) Water and the thermal evolution of carbonaceous chondrite parent bodies. Icarus, 82, 244–280.CrossRefGoogle Scholar
Hanner, M. S. and Bradley, J. P. (2003) Composition and mineralogy of comet dust. In Comets II, eds. Festou, M., Keller, H. U. and Weaver, H. A., Tucson: University of Arizona Press, pp. 555–564.Google Scholar
Huebner, W. F. (2002). Compositions of comets: Observations and models. Earth, Moon and Planets, 89, 179–195.CrossRefGoogle Scholar
Ishii, H. A., Bradley, J. P., Dai, Z. R.et al. (2008) Comparison of comet 81P/Wild2 dust with interplanetary dust from comets. Science, 319, 447–450.CrossRefGoogle ScholarPubMed
Jessberger, E. K., Stephan, T., Rost, D.et al. (2001) Properties of interplanetary dust: information from collected samples. In Interplanetary Dust, eds. Grun, E., Gustafson, B. A. S., Dermott, S. F. and Fechteg, H.Berlin: Springer, pp. 253–294.CrossRefGoogle Scholar
Jones, T. D., Lebofsky, L. A., Lewis, J. S. and Marley, M. S. (1990) The composition and origin of the C, P, and D asteroids: water as a tracer of thermal evolution in the outer belt. Icarus, 88, 172–192.CrossRefGoogle Scholar
Krot, A. N., Keil, K., Goodrich, C. A., Scott, E. R. D. and Weisberg, M. K. (2004) Classification of meteorites. In Treatise on Geochemistry, Vol. 1. Meteorites, Comets, and Planets, ed. Davis, A. M. Oxford: Elsevier, pp. 83–128.Google Scholar
Lawler, M. E., Brownlee, D. E., Temple, S. and Wheelock, M. M. (1989). Iron, magnesium, and silicon in dust from comet Halley. Icarus, 80, 225–242.CrossRefGoogle Scholar
Lodders, K. and Fegley, B.. (1998). The Planetary Scientist's Companion. New York: Oxford University Press, 371 pp.Google Scholar
Marty, B., Palma, R. L., Pepin, R. O.et al. (2008) Helium and neon abundances and compositions in cometary matter. Science, 319, 75–78.CrossRefGoogle ScholarPubMed
McKeegan, K. D. plus 45 coauthors (2006) Isotopic compositions of cometary matter returned by Stardust. Science, 314, 1724–1728.CrossRefGoogle ScholarPubMed
Metzler, K., Bischoff, A. and Stoffler, D. (1992) Accretionary dust mantles in CM chondrites: evidence for solar nebula processes. Geochimica et Cosmochimica Acta, 56, 2873–2897.CrossRefGoogle Scholar
Pieters, C. M. and McFadden, L. A. (1994) Meteorite and asteroid reflectance spectroscopy: clues to early solar system processes. Annual Reviews of Earth and Planetary Sciences, 22, 457–497.CrossRefGoogle Scholar
Rietmeijer, F. J. M. (1998). Interplanetary dust particles. In Planetary Materials, Reviews in Mineralogy36, ed. Papike, J. J.Washington, D.C.: Mineralogical Society of America, pp. 2–1 to 2–95.Google Scholar
Rivkin, A. S., Howell, E. S., Vilas, F. and Lebofsky, L. A. (2002) Hydrated minerals on asteroids: the astronomical record. In Asteroids III, eds. Bottke, W. F., Cellino, A., Paolicchi, P. and Binzel, R. P.Tucson: University of Arizona Press, pp. 235–253.Google Scholar
Rubin, A. E., Trigo-Rodriguez, J. M., Huber, H. and Wasson, J. T. (2007) Progressive aqueous alteration of CM carbonaceous chondrites. Geochimica et Cosmochimica Acta, 71, 2361–2382.CrossRefGoogle Scholar
Sandford, S. A. plus 54 coauthors (2006) Organics captured from comet 81P/Wild2 by the Stardust spacecraft. Science, 314, 1720–1724.CrossRefGoogle ScholarPubMed
Schramm, L. S., Brownlee, D. E. and Wheelock, M. M. (1989) Major element composition of stratospheric micrometeorites. Meteoritics, 24, 99–112.CrossRefGoogle Scholar
Shu, F. H., Shang, H. and Lee, T. (1996) Toward an astrophysical theory of chondrites. Science, 271, 1545–1552.CrossRefGoogle Scholar
Tsou, P. plus 19 coauthors (2004) Stardust encounters comet 81P/Wind 2. Journal of Geophysical Research, 109, E12S01, doi:10.1029/2004JE002317.CrossRefGoogle Scholar
Vilas, F., Jarvis, K. S. and Gaffey, M. J. (1994) Iron alteration minerals in the visible and near-infrared spectra of low-albedo asteroids. Icarus, 109, 274–283.CrossRefGoogle Scholar
Westphal, A. J., Snead, C., Butterworth, A.et al. (2004) Aerogel keystones: extraction of complete hypervelocity impact events from aerogel collectors. Meteoritics and Planetary Science, 39, 1375–1386.CrossRefGoogle Scholar
Westphal, A. J., Fakra, S. C., Gainsforth, Z.et al. (2009) Mixing fraction of inner solar system material in comet 81P/Wild2. Astrophysical Journal, 694, 18–28.CrossRefGoogle Scholar
Young, E. D., Ash, R. D., England, P. and Rumble, D. (1999) Fluid flow in chondrite parent bodies: deciphering the compositions of planetesimals. Science, 286, 1331–1335.CrossRefGoogle Scholar
Zolensky, M. E. and McSween, H. Y. (1988) Aqueous alteration. In Meteorites and the Early Solar System, eds. Kerridge, J. F. and Matthews, M.Tucson: University of Arizona Press, pp. 114–143.Google Scholar
Zolensky, M. E. plus 74 coauthors (2006) Mineralogy and petrology of comet 81P/Wild2 nucleus samples. Science, 314, 1735–1739.CrossRefGoogle Scholar

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