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Linked Open Data
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
Procedència
(DIGITAL.INTA)

Fitxa

Títol:
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
Descripció:
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
Relació:
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)
Drets:
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
Data:
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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    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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    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>

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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>

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    36. <identifier>The Astrophysical Journal 909(2): 123(2021)</identifier>

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    47. <rights>Published 2021 March 11 • © 2021. The American Astronomical Society. All rights reserved.</rights>

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            29. <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>

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              1. <mods:languageTerm authority="rfc3066">eng</mods:languageTerm>

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            31. <mods:accessCondition type="useAndReproduction">Attribution-NonCommercial-NoDerivatives 4.0 International</mods:accessCondition>

            32. <mods:subject>

              1. <mods:topic>Pre Biotic Astrochemistry</mods:topic>

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            33. <mods:subject>

              1. <mods:topic>Astrochemistry</mods:topic>

              </mods:subject>

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              1. <mods:topic>Ice Destruction</mods:topic>

              </mods:subject>

            35. <mods:subject>

              1. <mods:topic>Molecular Physics</mods:topic>

              </mods:subject>

            36. <mods:subject>

              1. <mods:topic>Molecule Destruction</mods:topic>

              </mods:subject>

            37. <mods:subject>

              1. <mods:topic>Spectral Line Identification</mods:topic>

              </mods:subject>

            38. <mods:subject>

              1. <mods:topic>Laboratory Astrophysics</mods:topic>

              </mods:subject>

            39. <mods:subject>

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              </mods:subject>

            40. <mods:subject>

              1. <mods:topic>Experimental Techniques</mods:topic>

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            41. <mods:titleInfo>

              1. <mods:title>2-aminooxazole in Astrophysical Environments: IR Spectra and Destruction Cross Sections for Energetic Processing</mods:title>

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      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>

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