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2-aminooxazole in Astrophysical Environments: IR Spectra and Destruction Cross Sections for Energetic Processing

Identificadores del recurso

The Astrophysical Journal 909(2): 123(2021)

0004-637X

https://iopscience.iop.org/article/10.3847/1538-4357/abdc1f

http://hdl.handle.net/20.500.12666/486

10.3847/1538-4357/abdc1f

1538-4357

Procedencia

(Digital.INTA - Repositorio institucional del INTA)

Ficha

Título:: 2-aminooxazole in Astrophysical Environments: IR Spectra and Destruction Cross Sections for Energetic Processing
Tema:: Pre Biotic Astrochemistry; Astrochemistry; Ice Destruction; Molecular Physics; Molecule Destruction; Spectral Line Identification; Laboratory Astrophysics; Theoretical Models; Experimental Techniques
Descripción:: 16 pags., 9 figs., 9 tabs. -- Unified Astronomy Thesaurus concepts: Pre-biotic astrochemistry (2079); Astrochemistry (75); Ice destruction (2091); Molecular physics (2058); Molecule destruction (2075); Spectral line identification (2073); Laboratory astrophysics (2004); Theoretical models (2107); Experimental techniques (2078); 2-aminooxazole (2AO), a N-heterocyclic molecule, has been proposed as an intermediate in prebiotic syntheses. It has been demonstrated that it can be synthesized from small molecules such as cyanamide and glycoaldehyde, which are present in interstellar space. The aim of this work is to provide infrared (IR) spectra, in the solid phase for conditions typical of astrophysical environments and to estimate its stability toward UV photons and cosmic rays. IR (4000–600 cm−1) absorption spectra at 20 K, 180 K, and 300 K, IR band strengths, and room-temperature UV (120–250 nm) absorption spectra are given for the first time for this species. Destruction cross sections of ≈9.5 10−18 cm2 and ≈2 10−16 cm2 were found in the irradiation at 20 K of pure 2AO and 2AO:H2O ices with UV (6.3–10.9 eV) photons or 5 keV electrons, respectively. These data were used to estimate half-life times for the molecule in different environments. It is estimated that 2AO could survive UV radiation and cosmic rays in the ice mantles of dense clouds beyond cloud collapse. In contrast, it would be very unstable on the surface of cold solar system bodies like Kuiper Belt objects, but the molecule could still survive within dust grain agglomerates or cometesimals.; Ministerio de Economia y Competitividad (MINECO) of Spain [FIS2016-77726-C3-1-P]; Spanish FEDER [ESP2017-86582-C4-1-R]; State Research Agency [PID2019-105552RB-C41]; MINECO (AEI/FEDER, UE) [AYA2017-85322-R]; Unidad de Excelencia Maria de Maeztu-CAB (CSIC-INTA) [MDM-2017-0737]; [FPU-17/03172]; Peerreview
Idioma:: English
Relación:: info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2016-77726-C3-1-P; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-86582-C4-1-R/ES/CONTRIBUCION ESPAÑOLA A LAS MISIONES ESPACIALES CRIOGENICAS SPICA Y ATHENA, POST-OPERACIONES DE HERSCHEL Y EXPLOTACION CIENTIFICA MULTIFRECUENCIA/; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105552RB-C41/ES/CONTRIBUCION DEL CAB A SPICA, DESARROLLO DE INSTRUMENTACION CRIOGENICA Y EXPLOTACION CIENTIFICA MULTILONGITUD DE ONDA/; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/AYA2017-85322-R/ES/PROCESOS EN HIELOS ASTROFISICOS/
Autor/Productor:: Maté, B.; Carrasco Herrera, R.; Timón, V.; Tanarro, I.; Herrero, V. J.; Carrascosa, H.; Muñoz Caro, G. M.; González Díaz, C.; Jiménez Serra, I.
Editor:: IOP Science Publishing
Otros colaboradores/productores:: Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737; 0000-0002-5478-8644; 0000-0002-1217-6834; 0000-0002-1888-513X; 0000-0002-7456-4832; 0000-0002-2885-4847; 0000-0001-7003-7368; 0000-0002-8789-9148; 0000-0003-4493-8714; Agencia Estatal de Investigación (AEI)
Derechos:: Attribution-NonCommercial-NoDerivatives 4.0 International; Published 2021 March 11 • © 2021. The American Astronomical Society. All rights reserved.; https://creativecommons.org/licenses/by-nc-nd/4.0/; info:eu-repo/semantics/openAccess
Fecha:: 2022-02-09T10:10:43Z; 2021-03-11
Tipo de recurso:: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; http://purl.org/coar/resource_type/c_6501
Formato:: application/pdf

oai_dc

Descargar XML

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1. < dc:title > 2-aminooxazole in Astrophysical Environments: IR Spectra and Destruction Cross Sections for Energetic Processing </ dc:title >
2. < dc:creator > Maté, B. </ dc:creator >
3. < dc:creator > Carrasco Herrera, R. </ dc:creator >
4. < dc:creator > Timón, V. </ dc:creator >
5. < dc:creator > Tanarro, I. </ dc:creator >
6. < dc:creator > Herrero, V. J. </ dc:creator >
7. < dc:creator > Carrascosa, H. </ dc:creator >
8. < dc:creator > Muñoz Caro, G. M. </ dc:creator >
9. < dc:creator > González Díaz, C. </ dc:creator >
10. < dc:creator > Jiménez Serra, I. </ dc:creator >
11. < dc:contributor > Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737 </ dc:contributor >
12. < dc:contributor > 0000-0002-5478-8644 </ dc:contributor >
13. < dc:contributor > 0000-0002-1217-6834 </ dc:contributor >
14. < dc:contributor > 0000-0002-1888-513X </ dc:contributor >
15. < dc:contributor > 0000-0002-7456-4832 </ dc:contributor >
16. < dc:contributor > 0000-0002-2885-4847 </ dc:contributor >
17. < dc:contributor > 0000-0001-7003-7368 </ dc:contributor >
18. < dc:contributor > 0000-0002-8789-9148 </ dc:contributor >
19. < dc:contributor > 0000-0003-4493-8714 </ dc:contributor >
20. < dc:contributor > Agencia Estatal de Investigación (AEI) </ dc:contributor >
21. < dc:subject > Pre Biotic Astrochemistry </ dc:subject >
22. < dc:subject > Astrochemistry </ dc:subject >
23. < dc:subject > Ice Destruction </ dc:subject >
24. < dc:subject > Molecular Physics </ dc:subject >
25. < dc:subject > Molecule Destruction </ dc:subject >
26. < dc:subject > Spectral Line Identification </ dc:subject >
27. < dc:subject > Laboratory Astrophysics </ dc:subject >
28. < dc:subject > Theoretical Models </ dc:subject >
29. < dc:subject > Experimental Techniques </ dc:subject >
30. < dc:description > 16 pags., 9 figs., 9 tabs. -- Unified Astronomy Thesaurus concepts: Pre-biotic astrochemistry (2079); Astrochemistry (75); Ice destruction (2091); Molecular physics (2058); Molecule destruction (2075); Spectral line identification (2073); Laboratory astrophysics (2004); Theoretical models (2107); Experimental techniques (2078) </ dc:description >
31. < dc:description > 2-aminooxazole (2AO), a N-heterocyclic molecule, has been proposed as an intermediate in prebiotic syntheses. It has been demonstrated that it can be synthesized from small molecules such as cyanamide and glycoaldehyde, which are present in interstellar space. The aim of this work is to provide infrared (IR) spectra, in the solid phase for conditions typical of astrophysical environments and to estimate its stability toward UV photons and cosmic rays. IR (4000–600 cm−1) absorption spectra at 20 K, 180 K, and 300 K, IR band strengths, and room-temperature UV (120–250 nm) absorption spectra are given for the first time for this species. Destruction cross sections of ≈9.5 10−18 cm2 and ≈2 10−16 cm2 were found in the irradiation at 20 K of pure 2AO and 2AO:H2O ices with UV (6.3–10.9 eV) photons or 5 keV electrons, respectively. These data were used to estimate half-life times for the molecule in different environments. It is estimated that 2AO could survive UV radiation and cosmic rays in the ice mantles of dense clouds beyond cloud collapse. In contrast, it would be very unstable on the surface of cold solar system bodies like Kuiper Belt objects, but the molecule could still survive within dust grain agglomerates or cometesimals. </ dc:description >
32. < dc:description > Ministerio de Economia y Competitividad (MINECO) of Spain [FIS2016-77726-C3-1-P]; Spanish FEDER [ESP2017-86582-C4-1-R]; State Research Agency [PID2019-105552RB-C41]; MINECO (AEI/FEDER, UE) [AYA2017-85322-R]; Unidad de Excelencia Maria de Maeztu-CAB (CSIC-INTA) [MDM-2017-0737]; [FPU-17/03172] </ dc:description >
33. < dc:description > Peerreview </ dc:description >
34. < dc:date > 2022-02-09T10:10:43Z </ dc:date >
35. < dc:date > 2022-02-09T10:10:43Z </ dc:date >
36. < dc:date > 2021-03-11 </ dc:date >
37. < dc:type > info:eu-repo/semantics/article </ dc:type >
38. < dc:type > info:eu-repo/semantics/publishedVersion </ dc:type >
39. < dc:type > http://purl.org/coar/resource_type/c_6501 </ dc:type >
40. < dc:identifier > The Astrophysical Journal 909(2): 123(2021) </ dc:identifier >
41. < dc:identifier > 0004-637X </ dc:identifier >
42. < dc:identifier > https://iopscience.iop.org/article/10.3847/1538-4357/abdc1f </ dc:identifier >
43. < dc:identifier > http://hdl.handle.net/20.500.12666/486 </ dc:identifier >
44. < dc:identifier > 10.3847/1538-4357/abdc1f </ dc:identifier >
45. < dc:identifier > 1538-4357 </ dc:identifier >
46. < dc:language > eng </ dc:language >
47. < dc:relation > info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2016-77726-C3-1-P </ dc:relation >
48. < dc:relation > info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-86582-C4-1-R/ES/CONTRIBUCION ESPAÑOLA A LAS MISIONES ESPACIALES CRIOGENICAS SPICA Y ATHENA, POST-OPERACIONES DE HERSCHEL Y EXPLOTACION CIENTIFICA MULTIFRECUENCIA/ </ dc:relation >
49. < dc:relation > info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-105552RB-C41/ES/CONTRIBUCION DEL CAB A SPICA, DESARROLLO DE INSTRUMENTACION CRIOGENICA Y EXPLOTACION CIENTIFICA MULTILONGITUD DE ONDA/ </ dc:relation >
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51. < dc:rights > Attribution-NonCommercial-NoDerivatives 4.0 International </ dc:rights >
52. < dc:rights > Published 2021 March 11 • © 2021. The American Astronomical Society. All rights reserved. </ dc:rights >
53. < dc:rights > https://creativecommons.org/licenses/by-nc-nd/4.0/ </ dc:rights >
54. < dc:rights > info:eu-repo/semantics/openAccess </ dc:rights >
55. < dc:format > application/pdf </ dc:format >
56. < dc:publisher > IOP Science Publishing </ dc:publisher >
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