Extremely Brief Formation Interval for Refractory Inclusions and Uniform Distribution of
                    <sup>26</sup>
                    Al in the Early Solar System

Thrane, Kristine; Bizzarro, Martin; Baker, Joel A.

doi:10.1086/506910

Cited by 157 publications

(231 citation statements)

References 19 publications

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“…Possible cross-contamination between samples was eliminated by washing the sample-introduction system three times with 0.3 M HNO 3 for 2 min or more between measurements, until the 24 Mg signal is less than 2 mV.…”

Section: Measurement Methodsmentioning

confidence: 99%

Separation of magnesium from meteorites and terrestrial silicate rocks for high-precision isotopic analysis using multiple collector-inductively coupled plasma-mass spectrometry

Wang

Lin

Liang

et al. 2011

J. Anal. At. Spectrom.

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We report a modified procedure for separating Mg and Al from meteorites and terrestrial igneous rocks for high-precision analysis of Mg isotopes with multiple collector-inductively coupled plasma-mass spectrometry. The separating procedure was carried out in a single ion-exchange column filled with AG50W-X12 resin, and Mg was eluted with 1 M HNO 3 , followed by Al eluted with 4M HNO 3 . The modified procedure efficiently eliminates most matrix elements (except for Ni, Co, and Cu) with a recovery yield of Mg > 99%. Measurements of Ni-, Co-, and Cu-bearing simulation solutions revealed no detectable matrix effects. However, test runs demonstrated significant mass-dependent fractionation during the chromatographic process; consequently, a high recovery yield of Mg (>99%) is required to limit the deviation to less than 0.05&. Furthermore, analysis of Mg standard solution with a wide range of concentrations demonstrated negligible deviation for samples with concentrations of 0.3-2.5 mg ml À1Mg relative to Mg standard solution concentrations of 1 mg ml À1 Mg. The total procedure bank is less than 2 ng. The long-term reproducibility of instrumental measurements of Mg isotopes is AE0.05& for d

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Section: Measurement Methodsmentioning

confidence: 99%

Separation of magnesium from meteorites and terrestrial silicate rocks for high-precision isotopic analysis using multiple collector-inductively coupled plasma-mass spectrometry

Wang

Lin

Liang

et al. 2011

J. Anal. At. Spectrom.

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“…It is thus not possible to obtain a coproduction of 10 5 # 10 not possible to produce by irradiation an 26 Al homogeneous MMSN. High-precision Mg isotope measurements on samples from the Earth, Moon, Mars, and bulk chondrites strongly suggest that the 26 Al reservoir was homogeneous at least on the part of the disk that generated the terrestrial planets (Thrane et al 2006). An irradiation origin of 26 Al seems thus very unlikely since is already comparable to the mass of rocks max M 26Al that finally formed the inner solar system, leaving no room for a loss of 26 Al nuclei during the entire production and accretion processes.…”

mentioning

confidence: 99%

“…Several authors suggested a brief formation period of CAIs compatible with the early embedded stellar stage (Young et al 2005;Thrane et al 2006). Given the short duration of the embedded phase in YSOs (∼0.2 Myr; Shu et al 1996), the resulting can account for the max N 26Al canonical 26 Al/ 27 Al ratio in CAIs over a minimal rocky reservoir of 40 M only if CAIs were to represent less than ∼0.02% of the protoplanetary rocks.…”

mentioning

confidence: 99%

Energetic Constraints on In Situ Production of Short-Lived Radionuclei in the Early Solar System

Duprat

Tatischeff

2007

ApJ

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We calculate upper limits on the amount of short-lived radionuclei that can be produced by nonthermal nucleosynthesis in the early solar system. Using energetic constraints obtained from X-ray observations of young stellar objects, we show that irradiation of bare solids can produce 10 Be and 41 Ca at levels compatible with a homogeneous distribution over the entire protoplanetary disk up to the comet-forming region. 53 Mn and 36 Cl cannot be produced at canonical levels together with 10 Be and 41 Ca, unless we posit a heterogeneous spatial distribution. The high level of 7 Be suggested recently is barely compatible with a coproduction of 10 Be up to the cometary reservoir and may indicate the irradiation of a gas phase. Finally, we show that the maximum amount of irradiation-induced 26 Al can only account for a homogeneous distribution of this radionuclide over a rocky reservoir of 2-3 M and that the well-defined canonical 26 Al/ 27 Al ratio observed in Ca-Al-rich inclusions is probably not compatible with an in situ production in the embedded phase of the Sun. If extinct 26 Al is detected in the cometary material from the Stardust mission, the nucleosynthetic process that produced this preeminent high-resolution chronometer should be searched for in stellar events contemporary with the birth of the Sun.

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“…Dating the formation of solids in the first million years can be probed by analysing CAIs and chondrules (e.g [129,[138][139][140][141][142]). The evolution of small planetesimals can be studied with iron meteorites, which are thought to originate from the core of differentiated asteroids [113,115,116,143,144].…”

Section: Dating the Formation Of The Solar Systemmentioning

confidence: 99%

Meteorites and cosmic dust: Interstellar heritage and nebular processes in the early solar system

Engrand

2011

EPJ Web of Conferences

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Abstract. Small solar system bodies like asteroids and comets have escaped planetary accretion. They are the oldest and best preserved witnesses of the formation of the solar system. Samples of these celestial bodies fall on Earth as meteorites and interplanetary dust. The STARDUST mission also recently returned to Earth cometary dust from comet 81P/Wild 2, a Jupiter Family Comet (JFC). These samples provide unique insights on the physico-chemical conditions and early processes of the solar system. They also contain some minute amount of materials inherited from the local interstellar medium that have survived the accretion processes in the solar system.

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Extremely Brief Formation Interval for Refractory Inclusions and Uniform Distribution of ²⁶ Al in the Early Solar System

Cited by 157 publications

References 19 publications

Separation of magnesium from meteorites and terrestrial silicate rocks for high-precision isotopic analysis using multiple collector-inductively coupled plasma-mass spectrometry

Separation of magnesium from meteorites and terrestrial silicate rocks for high-precision isotopic analysis using multiple collector-inductively coupled plasma-mass spectrometry

Energetic Constraints on In Situ Production of Short-Lived Radionuclei in the Early Solar System

Meteorites and cosmic dust: Interstellar heritage and nebular processes in the early solar system

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Extremely Brief Formation Interval for Refractory Inclusions and Uniform Distribution of 26 Al in the Early Solar System

Cited by 157 publications

References 19 publications

Separation of magnesium from meteorites and terrestrial silicate rocks for high-precision isotopic analysis using multiple collector-inductively coupled plasma-mass spectrometry

Separation of magnesium from meteorites and terrestrial silicate rocks for high-precision isotopic analysis using multiple collector-inductively coupled plasma-mass spectrometry

Energetic Constraints on In Situ Production of Short-Lived Radionuclei in the Early Solar System

Meteorites and cosmic dust: Interstellar heritage and nebular processes in the early solar system

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Extremely Brief Formation Interval for Refractory Inclusions and Uniform Distribution of ²⁶ Al in the Early Solar System