Thermal degradation of N-rich organic laboratory analogues: new insight on the cosmomaterials organic precursor composition

Details Thermal degradation of N-rich organic laboratory analogues: new insight on the cosmomaterials organic precursor composition Thermal degradation of N-rich organic laboratory analogues: new insight on the cosmomaterials organic precursor composition

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf.1075b&link_type=abstract

EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.1075

Computer Science

Scientific paper

The observed organic matter in the different objects, carbonaceous chondrites and IDPs, accessible to laboratory analyses is the result of a complex history. This history is divided into several phases the first of which take place into the presolar nebula and is followed by post accretional processes on the parent bodies [1, 2]. In the carbonaceous chondrites organic matter (both soluble and insoluble), nitrogen is a very minor constituent about 2wt%, but in micrometer scale localized zone of some IDPs the nitrogen content can reach values as high as 20wt% [1, 3]. Additionally, the Insoluble Organic Matter (IOM) polyaromatic structure suggests a formation through thermal processes of the organic precursor(s). In this IOM N-bearing cycles have been identified but not chemical functions like amino groups. The precursor(s) of all the organic matter observed in IOM and IDPs could then be nitrogen rich. To test this scenario, N-rich laboratory analogues, (polymeric solids) were thermally degraded at four different temperatures to simulate short time thermal processes in the solar nebula.

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