Star formation and chemical complexity in the Orion nebula: A new view with the IRAM and ALMA interferometers
| Autor: | Didier Despois, Alain Baudry, N. Brouillet |
|---|---|
| Přispěvatelé: | FORMATION STELLAIRE 2016, Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2016 |
| Předmět: |
0301 basic medicine
Solar System Milky Way Energy Engineering and Power Technology Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Physics and Astronomy(all) 01 natural sciences Submillimeter Array Stellar formation Radio telescope Radiointerférométrie 03 medical and health sciences 0103 physical sciences Orion Nebula Abondances moléculaires Astrophysics::Solar and Stellar Astrophysics Nébuleuse d'Orion 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics Formation stellaire Orion nebula Physics Star formation General Engineering Astrophysics::Instrumentation and Methods for Astrophysics Astronomy Planetary system Molecular abundances Stars Molécules complexes 030104 developmental biology 13. Climate action Complex molecules Radio interferometry Astrophysics::Earth and Planetary Astrophysics [SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA] |
| Zdroj: | Comptes Rendus. Physique Comptes Rendus. Physique, Académie des sciences (Paris), 2016, 17, pp.976-984. ⟨10.1016/j.crhy.2016.07.019⟩ |
| ISSN: | 1631-0705 1878-1535 |
| DOI: | 10.1016/j.crhy.2016.07.019 |
| Popis: | International audience; The Orion nebula is one of the most observed celestial regions in the Milky Way. It is an active massive star-forming region, especially well studied in the millimeter and submillimeter domains that allow us to unveil the cool and obscured regions in which stars are being formed. After a brief introduction to the main properties of a radio telescope, we recall that the most sensitive radio interferometers, the IRAM mm array and, especially, the recently built ALMA millimeter/submillimeter array, offer an outstanding spatial resolution reaching the sub-arcsecond scale, or even about 10 milli-arcseconds for ALMA (about four times the Earth’s orbit radius at the Orion distance). These interferometers can reveal the fine spatial details of the Orion clouds of gas and dust within which new stars and associated planetary systems are being formed. The high spectral resolution and sensitivity of both interferometers and the broad instantaneous bandwidth offered by ALMA allowed us to map the emission from a number of complex organic molecules, to estimate the molecular abundances, and to address some important aspects of the molecular complexity in Orion. Our observations do not lead to a unique molecular formation and excitation scheme, but the chemistry at work in the proto-stellar ‘fragments’ at the center of the Orion nebula can be compared with the chemistry prevailing in comets of the Solar system. We have underlined the possible links between the prebiotic molecules observed in space and the chemistry leading to the early terrestrial life. |
| Databáze: | OpenAIRE |
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