Showing papers by "Maria Elisabetta Palumbo published in 2007"
Ames Research Center1, Lawrence Livermore National Laboratory2, North Carolina State University3, University of Kent4, Carnegie Institution for Science5, University of California, Berkeley6, Goddard Space Flight Center7, State University of New York System8, Open University9, Lawrence Berkeley National Laboratory10, National Museum of Natural History11
TL;DR: In the Comet Wild 2 samples, organic compounds were found to be rich in O and N compared to meteoritic organics as discussed by the authors, suggesting that some organic compounds have an interstellar/protostellar heritage.
Abstract: Organics found in Comet Wild 2 samples show a heterogeneous and unequilibrated distribution in abundance and composition. Some are similar, but not identical, to those in interplanetary dust particles (IDPs) and carbonaceous meteorites. A new class of aromatic-poor organic material is also present. The organics are rich in O and N compared to meteoritic organics. Aromatic compounds are present, but the samples tend to be relatively poorer in aromatics than meteorites and IDPs. D and 15N suggest that some organics have an interstellar/protostellar heritage. While the variable extent of modification of these materials by impact capture is not yet fully constrained, a remarkably diverse suite of organic compounds is present and identifiable within the returned samples.
39 citations
01 Aug 2007
TL;DR: Rotundi et al. as discussed by the authors presented an analysis of COMET 81P/WILD 2 PARTICLES collected by Stardust, including a discussion of the wild 2 particles.
Abstract: ANALYSES OF COMET 81P/WILD 2 PARTICLES COLLECTED BY STARDUST. A. Rotundi, G.A. Baratta, J. Borg, J.R. Brucato, H. Busemann, L. Colangeli, L. D'Hendecourt, Z. Djouadi, G. Ferrini, I.A. Franchi, M. Fries, F. Grossemy, L.P. Keller, V. Mennella, K. Nakamura, L.R. Nittler, M.E. Palumbo, S.A. Sandford, A. Steele, B. Wopenka. Dip. Sci. Applicate, Univ. di Napoli “Parthenope”, Italy, rotundi@uniparthenope.it, INAF – Oss. Astr. di Catania, Italy, Inst. d’Astrophysique Spatiale, Univ. Paris-Sud, Orsay-Cedex, France, INAF – Oss. Astr. di Capodimonte, Napoli, Italy, DTM, Carnegie Inst., Washington DC, USA, PSSRI, Open Univ., Milton Keynes, UK, Novaetech s.r.l., Citta della Scienza, Napoli, Italy, 8 GL, Carnegie Inst., Washington DC, USA, NASA-JSC, Houston TX, USA, Jacobs Sverdrup, Eng. Sci. Contract Group, Houston TX, USA, Astroph. Branch, NASA-Ames Res. Cent., Moffett Field CA, USA, Washington Univ., St. Louis MO, 63130, USA.
8 citations
01 Jan 2007
TL;DR: In this paper, the formation of carbon chain oxides (e.g. C3O2) after ion irradiation of frozen CO was discussed, along with a detailed study of the IR spectroscopic properties of solid frozen formamide.
Abstract: We present some recent results obtained by an ongoing research that aims into the experimental study of the e ects induced by fast ions in solids, in particular frozen gases. The technique used to analyze the e ects of irradiation has been "in situ" infrared spectroscopy. Here we discuss the formation of carbon chain oxides (e.g. C3O2) after ion irradiation of frozen CO. A detailed study of the IR spectroscopic properties of solid frozen formamide is presented along with the modifications induced by ion irradiation. The results are relevant to explain the presence of molecules in the circumstellar environment of a newly born star. Those molecules could be produced by energetic processing of dust and released to the gas phase after warming up.