Mifsud, Duncan V., Herczku, Péter, Ramachandran, Ragav, Sundararajan, Pavithraa, Rahul, K K, Kovács, Sándor T S, Sulik, Béla, Juhász, Zoltán, Rácz, Richárd, Biri, Sándor, and others. (2024) A systematic mid-infrared spectroscopic study of thermally processed H2S ices. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 319 . Article Number 124567. ISSN 1386-1425. E-ISSN 1873-3557. (doi:10.1016/j.saa.2024.124567) (KAR id:106347)
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Language: English 
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| Official URL: https://doi.org/10.1016/j.saa.2024.124567 |
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Abstract
The positive identification of the molecular components of interstellar icy grain mantles is critically reliant upon the availability of laboratory-generated mid-infrared absorption spectra which can be compared against data acquired by ground- and space-borne telescopes. However, one molecule which remains thus far undetected in interstellar ices is H S, despite its important roles in astrochemical and geophysical processes. Such a lack of a detection is surprising, particularly in light of its relative abundance in cometary ices which are believed to be the most pristine remnants of pre-solar interstellar ices available for study. In this paper, we present the results of an extensive and quantitative mid-infrared spectroscopic characterisation of H S ices deposited at 20, 40, and 70 K and thermally processed to sublimation in an ultrahigh-vacuum system. We anticipate our results to be useful in confirming the detection of interstellar H S ice using high-resolution and high-sensitivity instruments such as the James Webb Space Telescope, as well as in the identification of solid H S in icy environments in the outer Solar System, such as comets and moons.
| Item Type: | Article |
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| DOI/Identification number: | 10.1016/j.saa.2024.124567 |
| Uncontrolled keywords: | Sulphur chemistry, H(2)S ice, Infrared spectroscopy, Astrochemistry, Planetary science |
| Subjects: | Q Science |
| Divisions: | Divisions > Division of Natural Sciences > Physics and Astronomy |
| Funders: |
European Union (https://ror.org/019w4f821)
Royal Society (https://ror.org/03wnrjx87) University of Kent (https://ror.org/00xkeyj56) |
| SWORD Depositor: | JISC Publications Router |
| Depositing User: | JISC Publications Router |
| Date Deposited: | 27 Jun 2024 13:42 UTC |
| Last Modified: | 05 Nov 2024 13:12 UTC |
| Resource URI: | https://kar.kent.ac.uk/id/eprint/106347 (The current URI for this page, for reference purposes) |
University of Kent Author Information
Mifsud, Duncan V..
| Creator's ORCID: |
 https://orcid.org/0000-0002-0379-354X
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| CReDIT Contributor Roles: |
Mason, Nigel J..
| Creator's ORCID: |
https://orcid.org/0000-0002-4468-8324
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| CReDIT Contributor Roles: |
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