The formation of the building blocks of peptides on interstellar dust grains
The emergence of life on Earth may have its origin in organic molecules formed in the interstellar medium. Molecules with amide and isocyanate groups resemble structures found in peptides and nucleobases and are necessary for their formation. Their formation is expected to take place in the solid st...
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| Veröffentlicht in: | Proceedings of the International Astronomical Union 2019-04, Vol.15 (S350), p.216-219 |
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| container_title | Proceedings of the International Astronomical Union |
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| creator | Ligterink, N. F. W. van Scheltinga, J. Terwisscha Kofman, V. Taquet, V. Cazaux, S. Jørgensen, J. K. van Dishoeck, E. F. Linnartz, H. |
| description | The emergence of life on Earth may have its origin in organic molecules formed in the interstellar medium. Molecules with amide and isocyanate groups resemble structures found in peptides and nucleobases and are necessary for their formation. Their formation is expected to take place in the solid state, on icy dust grains, and is studied here by far-UV irradiating a CH4:HNCO mixture at 20 K in the laboratory. Reaction products are detected by means of infrared spectroscopy and temperature programmed desorption - mass spectrometry. Various simple amides and isocyanates are formed, showing the importance of ice chemistry for their interstellar formation. Constrained by experimental conditions, a reaction network is derived, showing possible formation pathways of these species under interstellar conditions. |
| doi_str_mv | 10.1017/S1743921320000010 |
| format | Article |
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F. W. ; van Scheltinga, J. Terwisscha ; Kofman, V. ; Taquet, V. ; Cazaux, S. ; Jørgensen, J. K. ; van Dishoeck, E. F. ; Linnartz, H.</creator><creatorcontrib>Ligterink, N. F. W. ; van Scheltinga, J. Terwisscha ; Kofman, V. ; Taquet, V. ; Cazaux, S. ; Jørgensen, J. K. ; van Dishoeck, E. F. ; Linnartz, H. ; The PILS team</creatorcontrib><description>The emergence of life on Earth may have its origin in organic molecules formed in the interstellar medium. Molecules with amide and isocyanate groups resemble structures found in peptides and nucleobases and are necessary for their formation. Their formation is expected to take place in the solid state, on icy dust grains, and is studied here by far-UV irradiating a CH4:HNCO mixture at 20 K in the laboratory. Reaction products are detected by means of infrared spectroscopy and temperature programmed desorption - mass spectrometry. Various simple amides and isocyanates are formed, showing the importance of ice chemistry for their interstellar formation. 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| source | Cambridge University Press Journals Complete |
| subjects | Amides Astronomy Contributed Papers Cosmic dust Grains Interstellar chemistry Interstellar matter Isocyanates Mass spectrometry Organic chemistry Peptides Reaction products |
| title | The formation of the building blocks of peptides on interstellar dust grains |
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