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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

Origin

File

Title:: 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
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); 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
Relation:: 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.
Publisher:: 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)
Rights:: 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
Date:: 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
Format:: application/pdf

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52. <dim:field element="title" lang="es" mdschema="dc">2-aminooxazole in Astrophysical Environments: IR Spectra and Destruction Cross Sections for Energetic Processing</dim:field>
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1. <title>2-aminooxazole in Astrophysical Environments: IR Spectra and Destruction Cross Sections for Energetic Processing</title>
2. <creator>Maté, B.</creator>
3. <creator>Carrasco Herrera, R.</creator>
4. <creator>Timón, V.</creator>
5. <creator>Tanarro, I.</creator>
6. <creator>Herrero, V. J.</creator>
7. <creator>Carrascosa, H.</creator>
8. <creator>Muñoz Caro, G. M.</creator>
9. <creator>González Díaz, C.</creator>
10. <creator>Jiménez Serra, I.</creator>
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20. <contributor>Agencia Estatal de Investigación (AEI)</contributor>
21. <subject>Pre Biotic Astrochemistry</subject>
22. <subject>Astrochemistry</subject>
23. <subject>Ice Destruction</subject>
24. <subject>Molecular Physics</subject>
25. <subject>Molecule Destruction</subject>
26. <subject>Spectral Line Identification</subject>
27. <subject>Laboratory Astrophysics</subject>
28. <subject>Theoretical Models</subject>
29. <subject>Experimental Techniques</subject>
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31. <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.</description>
32. <date>2022-02-09</date>
33. <date>2022-02-09</date>
34. <date>2021-03-11</date>
35. <type>info:eu-repo/semantics/article</type>
36. <identifier>The Astrophysical Journal 909(2): 123(2021)</identifier>
37. <identifier>0004-637X</identifier>
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47. <rights>Published 2021 March 11 • © 2021. The American Astronomical Society. All rights reserved.</rights>
48. <rights>https://creativecommons.org/licenses/by-nc-nd/4.0/</rights>
49. <rights>info:eu-repo/semantics/openAccess</rights>
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1. <mods:name>
  1. <mods:namePart>Maté, B.</mods:namePart>
  </mods:name>
2. <mods:name>
  1. <mods:namePart>Carrasco Herrera, R.</mods:namePart>
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3. <mods:name>
  1. <mods:namePart>Timón, V.</mods:namePart>
  </mods:name>
4. <mods:name>
  1. <mods:namePart>Tanarro, I.</mods:namePart>
  </mods:name>
5. <mods:name>
  1. <mods:namePart>Herrero, V. J.</mods:namePart>
  </mods:name>
6. <mods:name>
  1. <mods:namePart>Carrascosa, H.</mods:namePart>
  </mods:name>
7. <mods:name>
  1. <mods:namePart>Muñoz Caro, G. M.</mods:namePart>
  </mods:name>
8. <mods:name>
  1. <mods:namePart>González Díaz, C.</mods:namePart>
  </mods:name>
9. <mods:name>
  1. <mods:namePart>Jiménez Serra, I.</mods:namePart>
  </mods:name>
10. <mods:extension>
  1. <mods:dateAvailable encoding="iso8601">2022-02-09T10:10:43Z</mods:dateAvailable>
  </mods:extension>
11. <mods:extension>
  1. <mods:dateAccessioned encoding="iso8601">2022-02-09T10:10:43Z</mods:dateAccessioned>
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12. <mods:originInfo>
  1. <mods:dateIssued encoding="iso8601">2021-03-11</mods:dateIssued>
  </mods:originInfo>
13. <mods:identifier type="citation">The Astrophysical Journal 909(2): 123(2021)</mods:identifier>
14. <mods:identifier type="issn">0004-637X</mods:identifier>
15. <mods:identifier type="other">https://iopscience.iop.org/article/10.3847/1538-4357/abdc1f</mods:identifier>
16. <mods:identifier type="uri">http://hdl.handle.net/20.500.12666/486</mods:identifier>
17. <mods:identifier type="doi">10.3847/1538-4357/abdc1f</mods:identifier>
18. <mods:identifier type="e-issn">1538-4357</mods:identifier>
19. <mods:abstract>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.</mods:abstract>
20. <mods:language>
  1. <mods:languageTerm>eng</mods:languageTerm>
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21. <mods:accessCondition type="useAndReproduction">Published 2021 March 11 • © 2021. The American Astronomical Society. All rights reserved.</mods:accessCondition>
22. <mods:accessCondition type="useAndReproduction">https://creativecommons.org/licenses/by-nc-nd/4.0/</mods:accessCondition>
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24. <mods:accessCondition type="useAndReproduction">Attribution-NonCommercial-NoDerivatives 4.0 International</mods:accessCondition>
25. <mods:subject>
  1. <mods:topic>Pre Biotic Astrochemistry</mods:topic>
  </mods:subject>
26. <mods:subject>
  1. <mods:topic>Astrochemistry</mods:topic>
  </mods:subject>
27. <mods:subject>
  1. <mods:topic>Ice Destruction</mods:topic>
  </mods:subject>
28. <mods:subject>
  1. <mods:topic>Molecular Physics</mods:topic>
  </mods:subject>
29. <mods:subject>
  1. <mods:topic>Molecule Destruction</mods:topic>
  </mods:subject>
30. <mods:subject>
  1. <mods:topic>Spectral Line Identification</mods:topic>
  </mods:subject>
31. <mods:subject>
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