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How micron-sized dust particles determine the chemistry of our Universe
In the environments where stars and planets form, about one percent of the mass is in the form of micro-meter sized particles known as dust. However small and insignificant these dust grains may seem, they are responsible for the production of the simplest (H(2)) to the most complex (amino-acids) mo...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3581832/ https://www.ncbi.nlm.nih.gov/pubmed/23439221 http://dx.doi.org/10.1038/srep01338 |
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author | Dulieu, François Congiu, Emanuele Noble, Jennifer Baouche, Saoud Chaabouni, Henda Moudens, Audrey Minissale, Marco Cazaux, Stéphanie |
author_facet | Dulieu, François Congiu, Emanuele Noble, Jennifer Baouche, Saoud Chaabouni, Henda Moudens, Audrey Minissale, Marco Cazaux, Stéphanie |
author_sort | Dulieu, François |
collection | PubMed |
description | In the environments where stars and planets form, about one percent of the mass is in the form of micro-meter sized particles known as dust. However small and insignificant these dust grains may seem, they are responsible for the production of the simplest (H(2)) to the most complex (amino-acids) molecules observed in our Universe. Dust particles are recognized as powerful nano-factories that produce chemical species. However, the mechanism that converts species on dust to gas species remains elusive. Here we report experimental evidence that species forming on interstellar dust analogs can be directly released into the gas. This process, entitled chemical desorption (fig. 1), can dominate over the chemistry due to the gas phase by more than ten orders of magnitude. It also determines which species remain on the surface and are available to participate in the subsequent complex chemistry that forms the molecules necessary for the emergence of life. |
format | Online Article Text |
id | pubmed-3581832 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-35818322013-02-26 How micron-sized dust particles determine the chemistry of our Universe Dulieu, François Congiu, Emanuele Noble, Jennifer Baouche, Saoud Chaabouni, Henda Moudens, Audrey Minissale, Marco Cazaux, Stéphanie Sci Rep Article In the environments where stars and planets form, about one percent of the mass is in the form of micro-meter sized particles known as dust. However small and insignificant these dust grains may seem, they are responsible for the production of the simplest (H(2)) to the most complex (amino-acids) molecules observed in our Universe. Dust particles are recognized as powerful nano-factories that produce chemical species. However, the mechanism that converts species on dust to gas species remains elusive. Here we report experimental evidence that species forming on interstellar dust analogs can be directly released into the gas. This process, entitled chemical desorption (fig. 1), can dominate over the chemistry due to the gas phase by more than ten orders of magnitude. It also determines which species remain on the surface and are available to participate in the subsequent complex chemistry that forms the molecules necessary for the emergence of life. Nature Publishing Group 2013-02-26 /pmc/articles/PMC3581832/ /pubmed/23439221 http://dx.doi.org/10.1038/srep01338 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
spellingShingle | Article Dulieu, François Congiu, Emanuele Noble, Jennifer Baouche, Saoud Chaabouni, Henda Moudens, Audrey Minissale, Marco Cazaux, Stéphanie How micron-sized dust particles determine the chemistry of our Universe |
title | How micron-sized dust particles determine the chemistry of our Universe |
title_full | How micron-sized dust particles determine the chemistry of our Universe |
title_fullStr | How micron-sized dust particles determine the chemistry of our Universe |
title_full_unstemmed | How micron-sized dust particles determine the chemistry of our Universe |
title_short | How micron-sized dust particles determine the chemistry of our Universe |
title_sort | how micron-sized dust particles determine the chemistry of our universe |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3581832/ https://www.ncbi.nlm.nih.gov/pubmed/23439221 http://dx.doi.org/10.1038/srep01338 |
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