Comments on 'Extinct radioactivities: Trapped residuals of presolar grains'

Trivedi, B. M. P.

doi:10.1086/154930

Cited by 2 publications

(3 citation statements)

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“…The model has been criticised by Trivedi (1977a)-with a response from Clayton (1977~)-and most thoroughly by .…”

Section: 22mentioning

confidence: 99%

“…I n the meantime analyses of more primitive samples have established beyond any doubt that in carbonaceous chondrites there are inclusions with Mg of an anomalous isotopic composition. Mass spectrometric measurements on separated samples (Gray and Compston 1974, Lee and Papanastassiou 1974, Lee et aZ 1976, 1977a,b, Stegmann 1980 as well as in situ measurements by means of ion microprobes (Lorin et a l 1977, Lorin and Michel-Levy 1978, Bradley et aZl978, Hutcheon et aZ1978, Macdougall and Phinney 1979) have shown the anomalies to be such that the 25Mg/24Mg ratios are normal while the 26Mg/244Mg ratios are up to 40% too high.…”

Section: Aluminium-26mentioning

confidence: 99%

“…There are many proponents of the concept that dust grains played an important role in introducing isotope anomalies into the solar system and, to some degree, have retained them ever since (Black 1972, Clayton et a1 1973, Eberhardt 1974, Clayton 1975a,b, 1977a,b,c,d,e,f, 1978a,b, 1979, Clayton and Hoyle 1976, Falk et a1 1977, Cameron and Truran 1977, Lattimer et nl 1978, Margolis 1979. D D Clayton in particular has been most inventive and most specific in proposing production schemes and discussing the importance of 'stardust', PRESOLCONS (pre-solar condensates) and SUNOCONS (supernova condensates).…”

Section: Extraneous Origin?mentioning

confidence: 99%

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Isotopic anomalies in meteorites

Begemann

1980

Rep. Prog. Phys.

101

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The classical picture of the pre-solar nebula is that of a hot, well-mixed cloud of chemically and isotopically uniform composition. Recent measurements have shown this conception to be erroneous, however. Anomalies have been discovered in the isotopic composition of a number of elements which cannot be explained by processes known to be going on within the solar system at present. Rather, they appear to reflect primordial heterogeneities, testifying to variations in space and/or time of the isotopic composition of these elements within the proto-solar nebula. They contribute to our understanding of processes and of time scales in the early solar system, before and after its formation. Furthermore, for the first time they allow us to identify modes of nucleosynthesis and to derive relevant parameters of such production modes.

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“…The model has been criticised by Trivedi (1977a)-with a response from Clayton (1977~)-and most thoroughly by .…”

Section: 22mentioning

confidence: 99%

Section: Aluminium-26mentioning

confidence: 99%

Section: Extraneous Origin?mentioning

confidence: 99%

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Isotopic anomalies in meteorites

Begemann

1980

Rep. Prog. Phys.

101

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Supernovae and the origin of the solar system

Clayton

1979

Space Sci Rev

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This review concentrates on recent ideas involving a relationship between the early solar system and supernova explosions. It summarizes briefly the data that has helped inspire those ideas. Because the true relationship is still unknown and generates controversy, the distinct ideas are introduced singly in the historical context of their origins, and the active sense of surprise and controversy is visible. Quotations from pivotal papers are used as part of the exposition. The subject involves equally the isotopic anomalies detected in meteorites and the dynamic events of galactic evolution, nucleosynthesis, and protosolar collapse. Whatever the correct situation is, new connections have been found between the origin of the elements and the formation of the solar system. The objective of this review is to enable interested space scientists to quickly identify the competing points of view and the experiments

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Comments on 'Extinct radioactivities: Trapped residuals of presolar grains'

Cited by 2 publications

References 0 publications

Isotopic anomalies in meteorites

Isotopic anomalies in meteorites

Supernovae and the origin of the solar system

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