Sewilo, Marta ORCID: 0000-0003-2248-6032, Charnley, Steven B., Schilke, Peter ORCID: 0000-0003-2141-5689, Taquet, Vianney, Oliveira, Joana M., Shimonishi, Takashi, Wirstrom, Eva, Indebetouw, Remy, Ward, Jacob L., van Loon, Jacco Th, Wiseman, Jennifer, Zahorecz, Sarolta, Onishi, Toshikazu, Kawamura, Akiko, Chen, C-H Rosie, Fukui, Yasuo and Golshan, Roya Hamedani (2019). Complex Organic Molecules in Star-Forming Regions of the Magellanic Clouds. ACS Earth Space Chem., 3 (10). S. 2088 - 2131. WASHINGTON: AMER CHEMICAL SOC. ISSN 2472-3452

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Abstract

The Large and Small Magellanic Clouds (LMC and SMC), gas-rich dwarf companions of the Milky Way, are the nearest laboratories for detailed studies on the formation and survival of complex organic molecules (COMs) under metal-poor conditions. To date, only methanol, methyl formate, and dimethyl ether have been detected in these galaxies-all three toward two hot cores in the N113 star-forming region in the LMC, the only extragalactic sources exhibiting complex hot-core chemistry. We describe a small and diverse sample of the LMC and SMC sources associated with COMs or hot-core chemistry, and compare the observations to theoretical model predictions. Theoretical models accounting for the physical conditions and metallicity of hot molecular cores in the Magellanic Clouds have been able to broadly account for the existing observations, but they fail to reproduce the dimethyl ether abundance by more than an order of magnitude. We discuss future prospects for research in the field of complex chemistry in the low-metallicity environment. The detection of COMs in the Magellanic Clouds has important implications for astrobiology. The metallicity of the Magellanic Clouds is similar to that of galaxies in the earlier epochs of the universe; thus, the presence of COMs in the LMC and SMC indicates that a similar prebiotic chemistry leading to the emergence of life, as it happened on Earth, is possible in low-metallicity systems in the earlier universe.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Sewilo, MartaUNSPECIFIEDorcid.org/0000-0003-2248-6032UNSPECIFIED
Charnley, Steven B.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schilke, PeterUNSPECIFIEDorcid.org/0000-0003-2141-5689UNSPECIFIED
Taquet, VianneyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Oliveira, Joana M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Shimonishi, TakashiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wirstrom, EvaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Indebetouw, RemyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Ward, Jacob L.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
van Loon, Jacco ThUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wiseman, JenniferUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zahorecz, SaroltaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Onishi, ToshikazuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kawamura, AkikoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chen, C-H RosieUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Fukui, YasuoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Golshan, Roya HamedaniUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-132253
DOI: 10.1021/acsearthspacechem.9b00065
Journal or Publication Title: ACS Earth Space Chem.
Volume: 3
Number: 10
Page Range: S. 2088 - 2131
Date: 2019
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 2472-3452
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Physics > Institute of Physics I
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
YOUNG STELLAR OBJECTS; INTEGRAL FIELD SPECTROSCOPY; SEST KEY PROGRAM; DARK CLOUDS; CHEMICAL DIFFERENTIATION; INFRARED-SPECTROSCOPY; CO SURVEY; INTERSTELLAR GLYCOLALDEHYDE; HEAVY-ELEMENTS; ICE CHEMISTRYMultiple languages
Chemistry, Multidisciplinary; Geochemistry & GeophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/13225

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