Organic Composition of C/1999 S4 (LINEAR): A Comet Formed Near Jupiter?-Reference-Cited by-同舟云学术

Organic Composition of C/1999 S4 (LINEAR): A Comet Formed Near Jupiter?

Published:2001-05-18 Issue:5520 Volume:292 Page:1334-1339
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Mumma M. J.¹,Dello Russo N.¹²,DiSanti M. A.¹²,Magee-Sauer K.³,Novak R. E.⁴,Brittain S.⁵,Rettig T.⁵,McLean I. S.⁶,Reuter D. C.¹,Xu Li-H.⁷

Affiliation:

1. Laboratory for Extraterrestrial Physics, Code 690, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA.

2. Department of Physics, The Catholic University of America, Washington, DC 20064, USA.

3. Department of Chemistry and Physics, Rowan University, Glassboro, NJ 08028, USA.

4. Department of Physics, Iona College, New Rochelle, NY 10801, USA.

5. Department of Physics and Astronomy, University of Notre Dame, Notre Dame, IN 46556, USA.

6. Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, CA 90095–1562, USA.

7. Department of Physical Sciences, University of New Brunswick, Saint John, New Brunswick, Canada E2L 4L5.

Abstract

In the current paradigm, Oort cloud comets formed in the giant planets' region of the solar nebula, where temperatures and other conditions varied greatly. The measured compositions of four such comets (Halley, Hyakutake, Hale-Bopp, and Lee) are consistent with formation from interstellar ices in the cold nebular region beyond Uranus. The composition of comet C/1999 S4 (LINEAR) differs greatly, which suggests that its ices condensed from processed nebular gas, probably in the Jupiter-Saturn region. Its unusual organic composition may require reevaluation of the prebiotic organic material delivered to the young Earth by comets.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference85 articles.

1. M. J. Mumma P. R Weissman S. A. Stern in Protostars and Planets III (Univ. of Arizona Press Tucson AZ 1993) pp. 1177–1252.

2. W. M. Irvine F. P. Schloerb J. Crovisier B. Fegley M. J. Mumma in Protostars and Planets IV (Univ. of Arizona Press Tucson AZ 2000) pp. 1159–1200.

3. The orbits of Oort cloud comets display the dynamical Tisserand invariant T i < 2. They include Halley-type orbits long-period comets and dynamically new comets.

4. Temperatures are approximate. They depend on the degree of nebular clearing the luminosity of the young Sun and other details (1).

5. Dones L., et al., Bull. Am. Astron. Soc. 32, 1060 (2000).

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