Isotopic anomalies in organic nanoglobules from Comet 81P/Wild 2: Comparison to Murchison nanoglobules and isotopic anomalies induced in terrestrial organics by electron irradiation

Gregorio, B. T. De; Stroud, Rhonda M.; Nittler, L. R.; Alexander, Conel M. O'd.; Kilcoyne, A. L. D.; Zega, T. J.

doi:10.1016/j.gca.2010.05.010

Cited by 105 publications

(142 citation statements)

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“…Nanoglobules often exhibit enrichments in D and/or 15 N [101,102], comparable to enrichments observed for the D and 15 N rich hot spots found in IOM (see section 4.1), but some nanoglobules have isotopic composition similar to the bulk IOM. These enrichments have been interpreted as the influence of interstellar-like processes during the formation of the nanoglobules or the organic matter precursor [101,102]. The exact process that leads to their Figure 6.…”

Section: Physical Texture At the Nanometer Scale: Hrtem Imagingsupporting

confidence: 64%

“…Both aromatic and aliphatic components are detected; C O and C O features are also detected, indicating the occurrence of ether and ester functions. Despites the particle-to-particle heterogeneities, the overall chemical and molecular properties of nanoglobules are close to those of the IOM [99][100][101]. Nanoglobules often exhibit enrichments in D and/or 15 N [101,102], comparable to enrichments observed for the D and 15 N rich hot spots found in IOM (see section 4.1), but some nanoglobules have isotopic composition similar to the bulk IOM.…”

Section: Physical Texture At the Nanometer Scale: Hrtem Imagingmentioning

confidence: 95%

“…Despites the particle-to-particle heterogeneities, the overall chemical and molecular properties of nanoglobules are close to those of the IOM [99][100][101]. Nanoglobules often exhibit enrichments in D and/or 15 N [101,102], comparable to enrichments observed for the D and 15 N rich hot spots found in IOM (see section 4.1), but some nanoglobules have isotopic composition similar to the bulk IOM. These enrichments have been interpreted as the influence of interstellar-like processes during the formation of the nanoglobules or the organic matter precursor [101,102].…”

Section: Physical Texture At the Nanometer Scale: Hrtem Imagingmentioning

confidence: 95%

“…Chemical composition, determined by EELS (Electron Energy-Loss Spectroscopy), shows minor variation among meteorites, but particle to particle differences are significant [98]. Some molecular features have been studied by FTIR, EELS and STXM (Scanned Transmission X-rays Microscopy) and indicate variations among particles [99][100][101]. Both aromatic and aliphatic components are detected; C O and C O features are also detected, indicating the occurrence of ether and ester functions.…”

Section: Physical Texture At the Nanometer Scale: Hrtem Imagingmentioning

confidence: 99%

“…formation is still a matter of debate, between a parent body origin during hydrothermal alteration and an interstellar origin [99][100][101][102].…”

Section: Epj Web Of Conferencesmentioning

confidence: 99%

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Organic and volatile elements in the solar system

Rémusat

2011

EPJ Web of Conferences

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Abstract. Chondrites and comets have accreted primitive materials from the early solar system. Those materials include organics, water and other volatile components. The most primitive chondrites and comets have undergone few modifications on their respective parent bodies and can deliver to laboratories components that were present at the origin of the protosolar nebula. Here I present a review of the organic material and volatile components that have been studied in the most primitive chondrites, and the last data from the stardust mission about the cometary record. This paper focuses on materials that can be studied in laboratories, by mass spectrometry, ion probes or organic chemistry techniques.

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Section: Physical Texture At the Nanometer Scale: Hrtem Imagingsupporting

confidence: 64%

Section: Physical Texture At the Nanometer Scale: Hrtem Imagingmentioning

confidence: 95%

Section: Physical Texture At the Nanometer Scale: Hrtem Imagingmentioning

confidence: 95%

Section: Physical Texture At the Nanometer Scale: Hrtem Imagingmentioning

confidence: 99%

“…formation is still a matter of debate, between a parent body origin during hydrothermal alteration and an interstellar origin [99][100][101][102].…”

Section: Epj Web Of Conferencesmentioning

confidence: 99%

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