The oxygen isotopic composition of the sun inferred from captured solar wind

K. D. McKeegan; A. P.A. Kallio; V. S. Heber; G. Jarzebinski; P. H. Mao; C. D. Coath; T. Kunihiro; R. C. Wiens; J. E. Nordholt; R. W. Moses; D. B. Reisenfeld; Amy Jurewicz; D. S. Burnett

doi:10.1126/science.1204636

The oxygen isotopic composition of the sun inferred from captured solar wind

K. D. McKeegan, A. P.A. Kallio, V. S. Heber, G. Jarzebinski, P. H. Mao, C. D. Coath, T. Kunihiro, R. C. Wiens, J. E. Nordholt, R. W. Moses, D. B. Reisenfeld, Amy Jurewicz, D. S. Burnett

Research output: Contribution to journal › Review article › peer-review

298 Scopus citations

Abstract

All planetary materials sampled thus far vary in their relative abundance of the major isotope of oxygen, ¹⁶O, such that it has not been possible to define a primordial solar system composition. We measured the oxygen isotopic composition of solar wind captured and returned to Earth by NASA's Genesis mission. Our results demonstrate that the Sun is highly enriched in ¹⁶O relative to the Earth, Moon, Mars, and bulk meteorites. Because the solar photosphere preserves the average isotopic composition of the solar system for elements heavier than lithium, we conclude that essentially all rocky materials in the inner solar system were enriched in ¹⁷O and ¹⁸O, relative to ¹⁶O, by ∼7%, probably via non-mass-dependent chemistry before accretion of the first planetesimals.

Original language	English (US)
Pages (from-to)	1528-1532
Number of pages	5
Journal	Science
Volume	332
Issue number	6037
DOIs	https://doi.org/10.1126/science.1204636
State	Published - Jun 24 2011

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title = "The oxygen isotopic composition of the sun inferred from captured solar wind",

abstract = "All planetary materials sampled thus far vary in their relative abundance of the major isotope of oxygen, 16O, such that it has not been possible to define a primordial solar system composition. We measured the oxygen isotopic composition of solar wind captured and returned to Earth by NASA's Genesis mission. Our results demonstrate that the Sun is highly enriched in 16O relative to the Earth, Moon, Mars, and bulk meteorites. Because the solar photosphere preserves the average isotopic composition of the solar system for elements heavier than lithium, we conclude that essentially all rocky materials in the inner solar system were enriched in 17O and 18O, relative to 16O, by ∼7%, probably via non-mass-dependent chemistry before accretion of the first planetesimals.",

author = "McKeegan, {K. D.} and Kallio, {A. P.A.} and Heber, {V. S.} and G. Jarzebinski and Mao, {P. H.} and Coath, {C. D.} and T. Kunihiro and Wiens, {R. C.} and Nordholt, {J. E.} and Moses, {R. W.} and Reisenfeld, {D. B.} and Amy Jurewicz and Burnett, {D. S.}",

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doi = "10.1126/science.1204636",

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T1 - The oxygen isotopic composition of the sun inferred from captured solar wind

AU - McKeegan, K. D.

AU - Kallio, A. P.A.

AU - Heber, V. S.

AU - Jarzebinski, G.

AU - Mao, P. H.

AU - Coath, C. D.

AU - Kunihiro, T.

AU - Wiens, R. C.

AU - Nordholt, J. E.

AU - Moses, R. W.

AU - Reisenfeld, D. B.

AU - Jurewicz, Amy

AU - Burnett, D. S.

PY - 2011/6/24

Y1 - 2011/6/24

N2 - All planetary materials sampled thus far vary in their relative abundance of the major isotope of oxygen, 16O, such that it has not been possible to define a primordial solar system composition. We measured the oxygen isotopic composition of solar wind captured and returned to Earth by NASA's Genesis mission. Our results demonstrate that the Sun is highly enriched in 16O relative to the Earth, Moon, Mars, and bulk meteorites. Because the solar photosphere preserves the average isotopic composition of the solar system for elements heavier than lithium, we conclude that essentially all rocky materials in the inner solar system were enriched in 17O and 18O, relative to 16O, by ∼7%, probably via non-mass-dependent chemistry before accretion of the first planetesimals.

AB - All planetary materials sampled thus far vary in their relative abundance of the major isotope of oxygen, 16O, such that it has not been possible to define a primordial solar system composition. We measured the oxygen isotopic composition of solar wind captured and returned to Earth by NASA's Genesis mission. Our results demonstrate that the Sun is highly enriched in 16O relative to the Earth, Moon, Mars, and bulk meteorites. Because the solar photosphere preserves the average isotopic composition of the solar system for elements heavier than lithium, we conclude that essentially all rocky materials in the inner solar system were enriched in 17O and 18O, relative to 16O, by ∼7%, probably via non-mass-dependent chemistry before accretion of the first planetesimals.

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The oxygen isotopic composition of the sun inferred from captured solar wind

Abstract

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